1.
Biogeographic realm
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A biogeographic realm or ecozone is the broadest biogeographic division of the Earths land surface, based on distributional patterns of terrestrial organisms. They are subdivided in ecoregions, which are classified in biomes or habitat types, as such, biogeographic realms designations are used to indicate general groupings of organisms based on their shared biogeography. Biogeographic realms correspond to the kingdoms of botany or zoogeographic regions of zoology. Biogeographic realms are characterized by the history of the organisms they contain. Biomes are characterized by similar climax vegetation, each realm may include a number of different biomes. The biogeographic realms of Udvardy were defined based on taxonomic composition, the rank corresponds more or less to the floristic kingdoms and zoogeographic regions. The usage of the ecozone is more variable. It was used originally in stratigraphy, in Canadian literature, the term was used by Wiken in macro level land classification, with geographic criteria. Later, Schültz would use it with ecological and physiognomical criteria, in the Global 200/WWF scheme, originally the term biogeographic realm in Udvardy sense was used. However, in a scheme of BBC, it was replaced by the term ecozone, in the WWF system, The Australasia realm includes Australia, Tasmania, the islands of Wallacea, New Guinea, the East Melanesian islands, New Caledonia, and New Zealand. The Palearctic and Nearctic are sometimes grouped into the Holarctic realm, the drainage basins of the principal oceans and seas of the world are marked by continental divides. The grey areas are endorheic basins that do not drain to the ocean
2.
Palearctic realm
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The Palearctic or Palaearctic is the largest of the eight biogeographic realms constituting the Earths surface. It consists of Europe, Asia north of the foothills of the Himalayas, North Africa, the Palearctic realm comprises the smaller terrestrial ecoregions of the Euro-Siberian region, the Mediterranean Basin, the Sahara and Arabian Deserts, and Western, Central and East Asia. The Palaearctic realm also has rivers and lakes, forming several freshwater ecoregions. Some of the rivers were the source of water for the earliest recorded civilizations that used irrigation methods, the Palearctic realm includes mostly boreal/subarctic-climate and temperate-climate ecoregions, which run across Eurasia from western Europe to the Bering Sea. South of the taiga are a belt of temperate broadleaf and mixed forests and this vast Euro-Siberian region is characterized by many shared plant and animal species, and has many affinities with the temperate and boreal regions of the Nearctic ecoregion of North America. Many zoologists consider the Palearctic and Nearctic to be a single Holarctic realm, the Palearctic and Nearctic also share many plant species, which botanists call the Arcto-Tertiary Geoflora. The Mediterranean basins mosaic of Mediterranean forests, woodlands, and scrub are home to 13,000 endemic species. Formerly the region was covered with forests and woodlands, but heavy human use has reduced much of the region to the sclerophyll shrublands known as chaparral, matorral, maquis. Conservation International has designated the Mediterranean basin as one of the biodiversity hotspots. A great belt of deserts, including the Atlantic coastal desert, Sahara desert, Central Asia and the Iranian plateau are home to dry steppe grasslands and desert basins, with montane forests, woodlands, and grasslands in the regions high mountains and plateaux. In southern Asia the boundary of the Palearctic is largely altitudinal, the middle altitude foothills of the Himalaya between about 2000–2500 m form the boundary between the Palearctic and Indomalaya ecoregions. East Asia was not much affected by glaciation in the ice ages, the mountains of southwest China are also designated as a biodiversity hotspot. In Southeastern Asia, high mountain ranges form tongues of Palearctic flora and fauna in northern Indochina, isolated small outposts occur as far south as central Myanmar, northernmost Vietnam and the high mountains of Taiwan. One bird family, the accentors is endemic to the Palearctic region, the Holarctic has four other endemic bird families, the divers or loons, grouse, auks, and waxwings. There are no endemic mammal orders in the region, but several families are endemic, Calomyscidae, Prolagidae, contributions to the zooarchaeology of Iceland, some preliminary notes. Iowa City, University of Iowa Press, pages 203–227,1989, buckland, P. C. et al. Holt in Eyjafjasveit, Iceland, a paleoecological study of the impact of Landnám. in Acta Archaeologica 61, pp. 252–271
3.
Biome
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A biome /ˈbaɪoʊm/ is a community of plants and animals that have common characteristics for the environment they exist in, and can be found over a range of continents. Spanning continents, biomes are distinct biological communities that have formed in response to a shared physical climate, biome is a broader term than habitat, any biome can comprise a variety of habitats. While a biome can cover large ares, a microbiome is a mix of organisms that coexist in a space as well. For example, the microbiome is the collection of bacteria, viruses. The biotas of the Earth make up the biosphere, the term was suggested in 1916 by Clements, originally as a synonym for biotic community of Möbius. In 1935, Tansley added the climatic and soil aspects to the idea, the International Biological Program projects popularized the concept of biome. However, in contexts, the term biome is used in a different manner. Both includes many biomes in fact and their boundaries must therefore be drawn arbitrarily and their characterization made according to the average conditions that predominate in them. A1978 study on North American grasslands found a positive correlation between evapotranspiration in mm/yr and above-ground net primary production in g/m2/yr. These findings help explain the categories used in Holdridge’s bioclassification scheme, Holdridge uses the four axes to define 30 so-called humidity provinces, which are clearly visible in his diagram. While this scheme largely ignores soil and sun exposure, Holdridge acknowledged that these were important and his scheme can be seen as a simplification of Holdridges, more readily accessible, but missing Holdridges greater specificity. Whittaker based his approach on theoretical assertions and empirical sampling and he was in a unique position to make such a holistic assertion because he had previously compiled a review of biome classifications. Physiognomy, the apparent characteristics, outward features, or appearance of communities or species. Biome, a grouping of terrestrial ecosystems on a continent that are similar in vegetation structure, physiognomy, features of the environment. Formation, a kind of community of plants on a given continent. Biome-type, grouping of convergent biomes or formations of different continents, whittakers distinction between biome and formation can be simplified, formation is used when applied to plant communities only, while biome is used when concerned with both plants and animals. Whittakers convention of biome-type or formation-type is simply a method to categorize similar communities. Whittaker considered four main ecoclines in the terrestrial realm, changes in physiognomic complexity vary with how favorable of an environment exists
4.
Turkey
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Turkey, officially the Republic of Turkey, is a transcontinental country in Eurasia, mainly in Anatolia in Western Asia, with a smaller portion on the Balkan peninsula in Southeast Europe. Turkey is a democratic, secular, unitary, parliamentary republic with a cultural heritage. The country is encircled by seas on three sides, the Aegean Sea is to the west, the Black Sea to the north, and the Mediterranean Sea to the south. The Bosphorus, the Sea of Marmara, and the Dardanelles, Ankara is the capital while Istanbul is the countrys largest city and main cultural and commercial centre. Approximately 70-80% of the countrys citizens identify themselves as ethnic Turks, other ethnic groups include legally recognised and unrecognised minorities. Kurds are the largest ethnic minority group, making up approximately 20% of the population, the area of Turkey has been inhabited since the Paleolithic by various ancient Anatolian civilisations, as well as Assyrians, Greeks, Thracians, Phrygians, Urartians and Armenians. After Alexander the Greats conquest, the area was Hellenized, a process continued under the Roman Empire. The Seljuk Sultanate of Rûm ruled Anatolia until the Mongol invasion in 1243, the empire reached the peak of its power in the 16th century, especially during the reign of Suleiman the Magnificent. During the war, the Ottoman government committed genocides against its Armenian, Assyrian, following the war, the conglomeration of territories and peoples that formerly comprised the Ottoman Empire was partitioned into several new states. Turkey is a member of the UN, an early member of NATO. Turkeys growing economy and diplomatic initiatives have led to its recognition as a regional power while her location has given it geopolitical, the name of Turkey is based on the ethnonym Türk. The first recorded use of the term Türk or Türük as an autonym is contained in the Old Turkic inscriptions of the Göktürks of Central Asia, the English name Turkey first appeared in the late 14th century and is derived from Medieval Latin Turchia. Similarly, the medieval Khazar Empire, a Turkic state on the shores of the Black. The medieval Arabs referred to the Mamluk Sultanate as al-Dawla al-Turkiyya, the Ottoman Empire was sometimes referred to as Turkey or the Turkish Empire among its European contemporaries. The Anatolian peninsula, comprising most of modern Turkey, is one of the oldest permanently settled regions in the world, various ancient Anatolian populations have lived in Anatolia, from at least the Neolithic period until the Hellenistic period. Many of these peoples spoke the Anatolian languages, a branch of the larger Indo-European language family, in fact, given the antiquity of the Indo-European Hittite and Luwian languages, some scholars have proposed Anatolia as the hypothetical centre from which the Indo-European languages radiated. The European part of Turkey, called Eastern Thrace, has also been inhabited since at least forty years ago. It is the largest and best-preserved Neolithic site found to date, the settlement of Troy started in the Neolithic Age and continued into the Iron Age
5.
Syria
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Syrias capital and largest city is Damascus. Religious groups include Sunnis, Christians, Alawites, Druze, Mandeans, Shiites, Salafis, Sunni Arabs make up the largest religious group in Syria. Its capital Damascus and largest city Aleppo are among the oldest continuously inhabited cities in the world, in the Islamic era, Damascus was the seat of the Umayyad Caliphate and a provincial capital of the Mamluk Sultanate in Egypt. The post-independence period was tumultuous, and a number of military coups. In 1958, Syria entered a union with Egypt called the United Arab Republic. Syria was under Emergency Law from 1963 to 2011, effectively suspending most constitutional protections for citizens, Bashar al-Assad has been president since 2000 and was preceded by his father Hafez al-Assad, who was in office from 1970 to 2000. Mainstream modern academic opinion strongly favours the argument that the Greek word is related to the cognate Ἀσσυρία, Assyria, in the past, others believed that it was derived from Siryon, the name that the Sidonians gave to Mount Hermon. However, the discovery of the inscription in 2000 seems to support the theory that the term Syria derives from Assyria. The area designated by the word has changed over time, since approximately 10,000 BC, Syria was one of centers of Neolithic culture where agriculture and cattle breeding appeared for the first time in the world. The following Neolithic period is represented by houses of Mureybet culture. At the time of the pre-pottery Neolithic, people used vessels made of stone, gyps, finds of obsidian tools from Anatolia are evidences of early trade relations. Cities of Hamoukar and Emar played an important role during the late Neolithic, archaeologists have demonstrated that civilization in Syria was one of the most ancient on earth, perhaps preceded by only those of Mesopotamia. The earliest recorded indigenous civilisation in the region was the Kingdom of Ebla near present-day Idlib, gifts from Pharaohs, found during excavations, confirm Eblas contact with Egypt. One of the earliest written texts from Syria is an agreement between Vizier Ibrium of Ebla and an ambiguous kingdom called Abarsal c.2300 BC. The Northwest Semitic language of the Amorites is the earliest attested of the Canaanite languages, Mari reemerged during this period, and saw renewed prosperity until conquered by Hammurabi of Babylon. Ugarit also arose during this time, circa 1800 BC, close to modern Latakia, Ugaritic was a Semitic language loosely related to the Canaanite languages, and developed the Ugaritic alphabet. The Ugarites kingdom survived until its destruction at the hands of the marauding Indo-European Sea Peoples in the 12th century BC, Yamhad was described in the tablets of Mari as the mightiest state in the near east and as having more vassals than Hammurabi of Babylon. Yamhad imposed its authority over Alalakh, Qatna, the Hurrians states, the army of Yamhad campaigned as far away as Dēr on the border of Elam
6.
Iraq
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The capital, and largest city, is Baghdad. The main ethnic groups are Arabs and Kurds, others include Assyrians, Turkmen, Shabakis, Yazidis, Armenians, Mandeans, Circassians, around 95% of the countrys 36 million citizens are Muslims, with Christianity, Yarsan, Yezidism, and Mandeanism also present. The official languages of Iraq are Arabic and Kurdish, two major rivers, the Tigris and Euphrates, run south through Iraq and into the Shatt al-Arab near the Persian Gulf. These rivers provide Iraq with significant amounts of fertile land, the region between the Tigris and Euphrates rivers, historically known as Mesopotamia, is often referred to as the cradle of civilisation. It was here that mankind first began to read, write, create laws, the area has been home to successive civilisations since the 6th millennium BC. Iraq was the centre of the Akkadian, Sumerian, Assyrian and it was also part of the Median, Achaemenid, Hellenistic, Parthian, Sassanid, Roman, Rashidun, Umayyad, Abbasid, Ayyubid, Mongol, Safavid, Afsharid, and Ottoman empires. Iraqs modern borders were mostly demarcated in 1920 by the League of Nations when the Ottoman Empire was divided by the Treaty of Sèvres, Iraq was placed under the authority of the United Kingdom as the British Mandate of Mesopotamia. A monarchy was established in 1921 and the Kingdom of Iraq gained independence from Britain in 1932, in 1958, the monarchy was overthrown and the Iraqi Republic created. Iraq was controlled by the Arab Socialist Baath Party from 1968 until 2003, after an invasion by the United States and its allies in 2003, Saddam Husseins Baath Party was removed from power and multi-party parliamentary elections were held in 2005. The American presence in Iraq ended in 2011, but the Iraqi insurgency continued and intensified as fighters from the Syrian Civil War spilled into the country, the Arabic name العراق al-ʿIrāq has been in use since before the 6th century. There are several suggested origins for the name, one dates to the Sumerian city of Uruk and is thus ultimately of Sumerian origin, as Uruk was the Akkadian name for the Sumerian city of Urug, containing the Sumerian word for city, UR. An Arabic folk etymology for the name is rooted, well-watered. During the medieval period, there was a region called ʿIrāq ʿArabī for Lower Mesopotamia and ʿIrāq ʿajamī, for the region now situated in Central and Western Iran. The term historically included the south of the Hamrin Mountains. The term Sawad was also used in early Islamic times for the region of the plain of the Tigris and Euphrates rivers. In English, it is either /ɪˈrɑːk/ or /ɪˈræk/, the American Heritage Dictionary, the pronunciation /aɪˈræk/ is frequently heard in U. S. media. Since approximately 10,000 BC, Iraq was one of centres of a Caucasoid Neolithic culture where agriculture, the following Neolithic period is represented by rectangular houses. At the time of the pre-pottery Neolithic, people used vessels made of stone, gypsum, finds of obsidian tools from Anatolia are evidences of early trade relations
7.
Iran
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Iran, also known as Persia, officially the Islamic Republic of Iran, is a sovereign state in Western Asia. Comprising a land area of 1,648,195 km2, it is the second-largest country in the Middle East, with 82.8 million inhabitants, Iran is the worlds 17th-most-populous country. It is the country with both a Caspian Sea and an Indian Ocean coastline. The countrys central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, Tehran is the countrys capital and largest city, as well as its leading economic and cultural center. Iran is the site of to one of the worlds oldest civilizations, the area was first unified by the Iranian Medes in 625 BC, who became the dominant cultural and political power in the region. The empire collapsed in 330 BC following the conquests of Alexander the Great, under the Sassanid Dynasty, Iran again became one of the leading powers in the world for the next four centuries. Beginning in 633 AD, Arabs conquered Iran and largely displaced the indigenous faiths of Manichaeism and Zoroastrianism by Islam, Iran became a major contributor to the Islamic Golden Age that followed, producing many influential scientists, scholars, artists, and thinkers. During the 18th century, Iran reached its greatest territorial extent since the Sassanid Empire, through the late 18th and 19th centuries, a series of conflicts with Russia led to significant territorial losses and the erosion of sovereignty. Popular unrest culminated in the Persian Constitutional Revolution of 1906, which established a monarchy and the countrys first legislative body. Following a coup instigated by the U. K. Growing dissent against foreign influence and political repression led to the 1979 Revolution, Irans rich cultural legacy is reflected in part by its 21 UNESCO World Heritage Sites, the third-largest number in Asia and 11th-largest in the world. Iran is a member of the UN, ECO, NAM, OIC. Its political system is based on the 1979 Constitution which combines elements of a democracy with a theocracy governed by Islamic jurists under the concept of a Supreme Leadership. A multicultural country comprising numerous ethnic and linguistic groups, most inhabitants are Shia Muslims, the largest ethnic groups in Iran are the Persians, Azeris, Kurds and Lurs. Historically, Iran has been referred to as Persia by the West, due mainly to the writings of Greek historians who called Iran Persis, meaning land of the Persians. As the most extensive interactions the Ancient Greeks had with any outsider was with the Persians, however, Persis was originally referred to a region settled by Persians in the west shore of Lake Urmia, in the 9th century BC. The settlement was then shifted to the end of the Zagros Mountains. In 1935, Reza Shah requested the international community to refer to the country by its native name, opposition to the name change led to the reversal of the decision, and Professor Ehsan Yarshater, editor of Encyclopædia Iranica, propagated a move to use Persia and Iran interchangeably
8.
Kuwait
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Kuwait /kuːˈweɪt/, officially the State of Kuwait, is a country in Western Asia. Situated in the edge of Eastern Arabia at the tip of the Persian Gulf, it shares borders with Iraq. As of 2016, Kuwait has a population of 4.2 million people,1.3 million are Kuwaitis and 2.9 million are expatriates, expatriates account for 70% of the population. Oil reserves were discovered in 1938, from 1946 to 1982, the country underwent large-scale modernization. In the 1980s, Kuwait experienced a period of geopolitical instability, in 1990, Kuwait was invaded by Iraq. The Iraqi occupation came to an end in 1991 after military intervention by coalition forces, at the end of the war, there were extensive efforts to revive the economy and rebuild national infrastructure. Kuwait is a constitutional emirate with a political system. It has an income economy backed by the worlds sixth largest oil reserves. The Kuwaiti dinar is the highest valued currency in the world, according to the World Bank, the country has the fourth highest per capita income in the world. The Constitution was promulgated in 1962, making Kuwait the most democratic country in the region, Kuwait ranks highly in regional metrics of gender equality, as it has the regions highest Global Gender Gap ranking. During the Ubaid period, Kuwait was the site of interaction between the peoples of Mesopotamia and Neolithic Eastern Arabia, mainly centered in As-Subiya in northern Kuwait. The earliest evidence of habitation in Kuwait dates back 8000 B. C. where Mesolithic tools were found in Burgan. As-Subiya in northern Kuwait is the earliest evidence of urbanization in the whole Persian Gulf basin area, mesopotamians first settled in the Kuwaiti island of Failaka in 2000 B. C. Traders from the Sumerian city of Ur inhabited Failaka and ran a mercantile business, the island had many Mesopotamian-style buildings typical of those found in Iraq dating from around 2000 B. C. The Neolithic inhabitants of Kuwait were among the worlds earliest maritime traders, one of the worlds earliest reed-boats was discovered in northern Kuwait dating back to the Ubaid period. In 3rd century BC, the ancient Greeks colonized the bay of Kuwait under Alexander the Great, according to Strabo and Arrian, Alexander the Great named Failaka Ikaros because it resembled the Aegean island of that name in size and shape. Remains of Greek colonization include a large Hellenistic fort and Greek temples, in 224 AD, Kuwait became part of the Sassanid Empire. At the time of the Sassanid Empire, Kuwait was known as Meshan, Akkaz was a Partho-Sassanian site, the Sassanid religions tower of silence was discovered in northern Akkaz
9.
Tigris
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The Tigris is the eastern member of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of southeastern Turkey through Iraq, the Tigris is 1,850 km long, rising in the Taurus Mountains of eastern Turkey about 25 km southeast of the city of Elazig and about 30 km from the headwaters of the Euphrates. The river then flows for 400 km through Turkish territory before becoming the border between Syria and Turkey and this stretch of 44 km is the only part of the river that is located in Syria. Close to its confluence with the Euphrates, the Tigris splits into several channels, First, the artificial Shatt al-Hayy branches off, to join the Euphrates near Nasiriyah. Second, the Shatt al-Muminah and Majar-al-Kabir branch off to feed the Central Marshes, further downstream, two other distributary channels branch off, which feed the Hawizeh Marshes. The main channel continues southwards and is joined by the Al-Kassarah, finally, the Tigris joins the Euphrates near al-Qurnah to form the Shatt-al-Arab. According to Pliny and other ancient historians, the Euphrates originally had its outlet into the sea separate from that of the Tigris, Baghdad, the capital of Iraq, stands on the banks of the Tigris. The port city of Basra straddles the Shatt al-Arab, in ancient times, many of the great cities of Mesopotamia stood on or near the Tigris, drawing water from it to irrigate the civilization of the Sumerians. Notable Tigris-side cities included Nineveh, Ctesiphon, and Seleucia, while the city of Lagash was irrigated by the Tigris via a canal dug around 2400 B. C, the Tigris has long been an important transport route in a largely desert country. Shallow-draft vessels can go as far as Baghdad, but rafts are needed for transport upstream to Mosul, General Francis Rawdon Chesney hauled two steamers overland through Syria in 1836 to explore the possibility of an overland and river route to India. One steamer, the Tigris, was wrecked in a storm which sank, Chesney proved the river navigable to powered craft. Later, the Euphrates and Tigris Steam Navigation Company was established in 1861 by the Lynch Brothers trading company and they had 2 steamers in service. By 1908 ten steamers were on the river, tourists boarded steam yachts to venture inland as this was the first age of archaeological tourism, and the sites of Ur and Ctesiphon became popular to European travelers. In the First World War, during the British conquest of Ottoman Mesopotamia, Indian, see Siege of Kut and the Fall of Baghdad. The Tigris Flotilla included vessels Clio, Espiegle, Lawrence, Odin, armed tug Comet, armed launches Lewis Pelly, Miner, Shaitan, Sumana, and stern wheelers Muzaffari/Mozaffir. These were joined by Royal Navy Fly-class gunboats Butterfly, Cranefly, Dragonfly, Mayfly, Sawfly, Snakefly, and Mantis, Moth, the Ancient Greek form Tigris was borrowed from Old Persian Tigrā, itself from Elamite Tigra, itself from Sumerian Idigna. The Sumerian form was borrowed into Akkadian as Idiqlat, and from there into the other Semitic languages, another name for the Tigris used in Middle Persian was Arvand Rud, literally swift river. Today, however, Arvand Rud refers to the confluence of the Euphrates, in Kurdish, it is also known as Ava Mezin, the Great Water
10.
Euphrates
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The Euphrates is the longest and one of the most historically important rivers of Western Asia. Together with the Tigris, it is one of the two defining rivers of Mesopotamia, originating in eastern Turkey, the Euphrates flows through Syria and Iraq to join the Tigris in the Shatt al-Arab, which empties into the Persian Gulf. The Ancient Greek form Euphrátēs was borrowed from Old Persian Ufrātu, the Elamite name is ultimately derived from the Sumerian Buranuna, possibly through the Akkadian name. In Akkadian the river was similarly called Purattu, which has been perpetuated in Semitic languages, the Elamite, Akkadian, and possibly Sumerian forms are suggested to be from an unrecorded substrate language. The earliest references to the Euphrates come from texts found in Shuruppak and pre-Sargonic Nippur in southern Iraq. In these texts, written in Sumerian, the Euphrates is called Buranuna, the name could also be written KIB. NUN. or dKIB. NUN, with the prefix d indicating that the river was a divinity. In Sumerian, the name of the city of Sippar in modern-day Iraq was also a written UD. KIB. NUN, the Euphrates is the longest river of Western Asia. It emerges from the confluence of the Kara Su or Western Euphrates, the same figures are given by Isaev and Mikhailova. The length of the Shatt al-Arab, which connects the Euphrates, both the Kara Su and the Murat Su rise northwest from Lake Van at elevations of 3,290 metres and 3,520 metres amsl, respectively. At the location of the Keban Dam, the two rivers, now combined into the Euphrates, have dropped to an elevation of 693 metres amsl, from Keban to the Syrian–Turkish border, the river drops another 368 metres over a distance of less than 600 kilometres. The Euphrates receives most of its water in the form of rainfall and melting snow, discharge in these two months accounts for 36 percent of the total annual discharge of the Euphrates, or even 60–70 percent according to one source, while low runoff occurs in summer and autumn. The discharge regime of the Euphrates has changed dramatically since the construction of the first dams in the 1970s, data on Euphrates discharge collected after 1990 show the impact of the construction of the numerous dams in the Euphrates and of the increased withdrawal of water for irrigation. Average discharge at Hīt after 1990 has dropped to 356 cubic metres per second, the seasonal variability has equally changed. The pre-1990 peak volume recorded at Hīt was 7,510 cubic metres per second, the minimum volume at Hīt remained relatively unchanged, rising from 55 cubic metres per second before 1990 to 58 cubic metres per second afterward. In Syria, three rivers add their water to the Euphrates, the Sajur, the Balikh and the Khabur and these rivers rise in the foothills of the Taurus Mountains along the Syro–Turkish border and add comparatively little water to the Euphrates. The Sajur is the smallest of these tributaries, emerging from two streams near Gaziantep and draining the plain around Manbij before emptying into the reservoir of the Tishrin Dam. The Balikh receives most of its water from a spring near Ayn al-Arus. In terms of length, drainage basin and discharge, the Khabur is the largest of these three and its main karstic springs are located around Ras al-Ayn, from where the Khabur flows southeast past Al-Hasakah, where the river turns south and drains into the Euphrates near Busayrah
11.
Great Zab
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The Great Zab or Upper Zab is an approximately 400-kilometre long river flowing through Turkey and Iraq. It rises in Turkey near Lake Van and joins the Tigris in Iraq south of Mosul, the drainage basin of the Great Zab covers approximately 40,300 square kilometres, and during its course, the rivers collects the water from many tributaries. The river and its tributaries are fed by rainfall and snowmelt – as a result of which discharge fluctuates highly throughout the year. At least six dams have been planned on the Great Zab and its tributaries, but construction of only one, the Bekhme Dam, has commenced but was halted after the Gulf War. The Zagros Mountains have been occupied since at least the Lower Palaeolithic, historical records for the region are available from the end of the third millennium BCE onward. In the Neo-Assyrian period, the Great Zab provided water for irrigation for the lands around the city of Nimrud. The Battle of the Zab – which ended the Umayyad Caliphate – took place near a tributary of the Great Zab, during the 19th and 20th centuries, the Great Zab basin saw frequent uprisings of local Kurdish tribes striving for autonomy. The Great Zab rises in Turkey in the region east of Lake Van at an elevation of approximately 3,000 metres amsl. In Turkey, the Great Zab traverses the provinces of Van and Hakkâri, whereas in Iraq it flows through Duhok Governorate and Erbil Governorate, together with the Tigris, the Great Zab forms the boundary between Erbil Governorate and Ninawa Governorate. In its upper reaches, the Great Zab flows through steep, numerous mountain streams and wadis join the Great Zab on its right and left banks. The Great Zab receives most of its waters from the left-bank tributaries, the length of the Great Zab has been variously estimated at 392 kilometres and 473 kilometres. Approximately 300 kilometres of the course are located within Iraq. The average discharge of the Great Zab is 419 cubic metres per second, the average annual discharge is 13.2 cubic kilometres. Because of its nature, Medieval Arab geographers have described the Great Zab – together with the Little Zab – as demoniacally possessed. Estimates of the basin of the Great Zab vary widely – from a low 25,810 square kilometres to a high figure of 40,300 square kilometres. Approximately 62 percent of the basin is located in Iraq, the remainder is in Turkey, to the south, the Great Zab basin borders on that of the Little Zab while on the east it adjoins the Tigris basin. The Zagros consists of limestone folds rising to elevations of over 3,000 metres amsl. The valleys – including that of the Great Zab – and the foothill zone are filled with gravel, conglomerate, and sandstone
12.
Little Zab
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The Little Zab or Lower Zab originates in Iran and joins the Tigris just south of Al Zab in the Kurdistan region of Iraq. The river is approximately 400 kilometres long and drains an area of about 22,000 square kilometres, the river is fed by rainfall and snowmelt, resulting in a peak discharge in spring and low water in summer and early fall. Two dams have been built on the Little Zab, regulating the flow, providing water for irrigation. The Zagros Mountains have been occupied since at least the Lower Palaeolithic, human occupation of the Little Zab basin has been attested for every period since then. The Little Zab rises in the Zagros Mountains in Iran at an elevation of circa 3,000 metres amsl, in its upper reaches, the course of the Little Zab is determined by the alignment of the major mountain chains that make up the Zagros. Most tributaries join the Little Zab upstream from Dukan, with the largest being the Baneh River, a number of smaller streams joined the Little Zab in the Ranya Plain, which is now partly inundated by Lake Dukan. Different estimates have given for the length of the Little Zab,380 kilometres,400 kilometres and 456 kilometres. The river is fed by snowmelt and rainfall, resulting in a discharge in the period February–May. Low water levels are recorded for the period July–October, the average discharge of the Little Zab is 197.8 cubic metres per second, whereas the maximum recorded discharge is 3,420 cubic metres per second. Average annual discharge is 7.2 cubic kilometres, because of its torrential nature, Medieval Arab geographers have described the Little Zab, and the Great Zab as well, as demoniacally possessed. The drainage basin of the Little Zab covers 21, 475–22,250 square kilometres, from the location where the Dukan Dam has been constructed, the larger part of the basin is located within Iraqi borders, the remainder is in Iran. On the north, it is bordered by the Great Zab basin while on the south it is adjoined by the basins of the Adhaim, the parallel mountain ranges of the Zagros consist of limestone folds rising to elevations over 3,000 metres. Water erosion has filled the Little Zab valley and the foothill zone south-west of the Zagros with layers of gravel, conglomerate, the Ranya Plain is the largest valley in the Little Zab drainage basin, and the second-largest in the Iraqi Zagros behind the Shahrazor. The Little Zab crosses very diverse climatic and ecological zones, annual precipitation along the course of the river diminishes from over 1,000 millimetres in the Iranian Zagros to less than 200 millimetres at the confluence with the Tigris near Al Zab. Average temperatures follow a similar gradient, with the valleys generally experiencing colder winters than the foothill zone. In the high Zagros, three different ecozones can be distinguished, the tree line is at approximately 1,800 metres, above which herbs and shrubs predominate. The dominant vegetation between 1,800 and 610 metres was an oak forest, but not much of this original vegetation remains. The river valleys are characterized by water-loving plants, and marshy areas were in the past – in the absence of drainage – prone to malaria
13.
Ecoregion conservation status
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Conservation status of the Global 200 ecoregions is used to classify ecoregions into one of three broad categories, critical/endangered, vulnerable, or relatively stable/relatively intact. The conservation status of terrestrial ecoregions is noted, CE for critical or endangered, V for vulnerable, ecoregions vary in their biological particularities, as well as in their conservation status. This latter represents an estimation of the current and future ability of the ecoregion to sustain ecological viability, the Global 200 ecoregions list can mostly help conservation at regional scale. However, certain phenomena obviously depend on more complicated parameters not used in defining the current database and these would require further gathering of information, and require coordination of efforts between several ecoregions. However, Global 200 ecoregions can help these efforts by identifying habitat sites and it may also help identify the origin of invasive species, and offer leverage for slowing down or stopping the intrusion and settling of the latter
14.
Critical/endangered
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Conservation status of the Global 200 ecoregions is used to classify ecoregions into one of three broad categories, critical/endangered, vulnerable, or relatively stable/relatively intact. The conservation status of terrestrial ecoregions is noted, CE for critical or endangered, V for vulnerable, ecoregions vary in their biological particularities, as well as in their conservation status. This latter represents an estimation of the current and future ability of the ecoregion to sustain ecological viability, the Global 200 ecoregions list can mostly help conservation at regional scale. However, certain phenomena obviously depend on more complicated parameters not used in defining the current database and these would require further gathering of information, and require coordination of efforts between several ecoregions. However, Global 200 ecoregions can help these efforts by identifying habitat sites and it may also help identify the origin of invasive species, and offer leverage for slowing down or stopping the intrusion and settling of the latter
15.
Tributary
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A tributary or affluent is a stream or river that flows into a larger stream or main stem river or a lake. A tributary does not flow directly into a sea or ocean, tributaries and the main stem river drain the surrounding drainage basin of its surface water and groundwater, leading the water out into an ocean. A confluence, where two or more bodies of water together, usually refers to the joining of tributaries. The opposite to a tributary is a distributary, a river or stream that branches off from, distributaries are most often found in river deltas. Right tributary and left tributary are terms stating the orientation of the relative to the flow of the main stem river. These terms are defined from the perspective of looking downstream, where tributaries have the same name as the river into which they feed, they are called forks. These are typically designated by compass direction, for example, the American River receives flow from its North, Middle, and South forks. The Chicago Rivers North Branch has the East, West, and Middle Fork, the South Branch has its South Fork, forks are sometimes designated as right or left. Here, the handedness is from the point of view of an observer facing upstream, for instance, Steer Creek has a left tributary which is called Right Fork Steer Creek. Tributaries are sometimes listed starting with those nearest to the source of the river, the Strahler Stream Order examines the arrangement of tributaries in a hierarchy of first, second, third, and higher orders, with the first-order tributary being typically the least in size. For example, a second-order tributary would be the result of two or more first-order tributaries combining to form the second-order tributary, another method is to list tributaries from mouth to source, in the form of a tree structure, stored as a tree data structure
16.
Western Asia
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Western Asia, West Asia, Southwestern Asia or Southwest Asia is the westernmost subregion of Asia. The concept is in limited use, as it overlaps with the Middle East. The term is used for the purposes of grouping countries in statistics. The total population of Western Asia is an estimated 300 million as of 2015, in an unrelated context, the term is also used in ancient history and archaeology to divide the Fertile Crescent into the Asiatic or Western Asian cultures as opposed to ancient Egypt. As a geographic concept, Western Asia almost always includes the Levant, Mesopotamia, the term is used pragmatically and has no correct or generally agreed-upon definition. In contrast to this definition, the United Nations Industrial Development Organisation in its 2015 yearbook also includes Armenia and Azerbaijan, unlike the UNIDO, the United Nations Statistics Division excludes Iran from Western Asia and include Turkey, Georgia, and Cyprus in the region. These four countries are listed in the European category of the United Nations Educational, Scientific, the Olympic Council of Asias multi-sport event West Asian Games are contested by athletes representing these thirteen countries. Among the regions sports organisations are the West Asia Basketball Association, West Asian Billiards and Snooker Federation, West Asian Football Federation, Western Asia was in use as a geographical term in the early 19th century, even before Near East became current as a geopolitical concept. Use of the term in the context of contemporary geopolitics or world economy appears to date from the 1960s, Western Asia is located directly south of Eastern Europe. The region is surrounded by seven major seas, the Aegean Sea, the Black Sea, the Caspian Sea, the Persian Gulf, the Arabian Sea, the Red Sea, and the Mediterranean Sea. The Dasht-e Kavir and Dasht-e Lut deserts in eastern Iran naturally delimit the region somewhat from Asia itself, three major tectonic plates converge on Western Asia, including the African, Eurasian, and Arabian plates. The boundaries between the plates make up the Azores-Gibraltar Ridge, extending across North Africa, the Red Sea. The Arabian Plate is moving northward into the Anatolian plate at the East Anatolian Fault, several major aquifers provide water to large portions of Western Asia. In Saudi Arabia, two large aquifers of Palaeozoic and Triassic origins are located beneath the Jabal Tuwayq mountains and areas west to the Red Sea. Cretaceous and Eocene-origin aquifers are located beneath large portions of central and eastern Saudi Arabia, including Wasia, flood or furrow irrigation, as well as sprinkler methods, are extensively used for irrigation, covering nearly 90,000 km² across Western Asia for agriculture. Western Asia is primarily arid and semi-arid, and can be subject to drought, the region consists of grasslands, rangelands, deserts, and mountains. Water shortages are a problem in parts of West Asia, with rapidly growing populations increasing demands for water. Major rivers, including the Tigris and Euphrates, provide sources for water to support agriculture
17.
Armenian Highlands
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The Armenian Highlands is the central-most and highest of three land-locked plateaus. that together form the northern sector of the Middle East. To its west is the Anatolian plateau which rises slowly from the lowland coast of the Aegean Sea, to its southeast is the Iranian plateau, where the elevation drops rapidly by about 600 metres to 1,500 metres above sea level. The Caucasus extends to the northeast of the Armenian Highlands, to the southwest of the Armenian Highlands is Upper Mesopotamia. During the Middle Ages, Turkmens settled in numbers in the Armenian Highlands. The region was mainly inhabited by Armenians, and minorities of Georgians and Assyrians. The Christian population of the Western half of the region was exterminated during the Armenian Genocide of 1915, today, the region is mainly inhabited by Armenians, Kurds, Azerbaijanis, Turks, and Georgians. Their total area is about 400,000 km2, historically, the Armenian Highlands have been the scene of great volcanic activity. The Armenian Highlands are rich in water resources, most of the Armenian Highlands is in eastern Turkey, and also includes northwestern Iran, all of Armenia, southern Georgia, and western Azerbaijan. Its northeastern parts are known as Lesser Caucasus, which is a center of Armenian culture. From 4000 to 1000 BC, tools and trinkets of copper, bronze and iron were produced in this region. It is also believed to be one of the possible locations of the Garden of Eden. The Armenian Plateau has been called the epicenter of the Iron Age, in the Early Iron Age, the Kingdom of Van controlled much of the region, until it was overthrown by the Medes and Orontid dynasty. In Gilgamesh, the land of Aratta is placed in a space that could be describing the Armenian plateau. From the early era and on, the region came directly under Safavid Iranian rule. The apricot was known by the Romans as the prunus armenicus and was brought to Europe from the Armenian plateau, history of Armenia Geography of Armenia Hewsen, Robert H. Armenia, A Historical Atlas
18.
Persian Gulf
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The Persian Gulf is a mediterranean sea in Western Asia. The body of water is an extension of the Indian Ocean through the Strait of Hormuz, the Shatt al-Arab river delta forms the northwest shoreline. The Persian Gulf was a battlefield of the 1980–1988 Iran–Iraq War and it is the namesake of the 1991 Gulf War, the largely air- and land-based conflict that followed Iraqs invasion of Kuwait. The gulf has many fishing grounds, extensive coral reefs, and abundant pearl oysters, the body of water is historically and internationally known as the Persian Gulf. Some Arab governments refer to it as the Arabian Gulf or The Gulf, the name Gulf of Iran is used by the International Hydrographic Organization. The Persian Gulf is geologically young, having been formed around 15,000 years ago. Its length is 989 kilometres, with Iran covering most of the northern coast, the Persian Gulf is about 56 km wide at its narrowest, in the Strait of Hormuz. The waters are very shallow, with a maximum depth of 90 metres. Various small islands lie within the Persian Gulf, some of which are the subject of territorial disputes between the states of the region. The International Hydrographic Organization defines the Persian Gulfs southern limit as The Northwestern limit of Gulf of Oman and this limit is defined as A line joining Ràs Limah on the coast of Arabia and Ràs al Kuh on the coast of Iran. The Persian Gulf and its areas are the worlds largest single source of crude oil. Safaniya Oil Field, the worlds largest offshore oilfield, is located in the Persian Gulf, large gas finds have also been made, with Qatar and Iran sharing a giant field across the territorial median line. Using this gas, Qatar has built up a substantial liquefied natural gas, the oil-rich countries that have a coastline on the Persian Gulf are referred to as the Persian Gulf States. In 550 BC, the Achaemenid Empire established the first ancient empire in Persis, consequently, in the Greek sources, the body of water that bordered this province came to be known as the Persian Gulf. In the travel account of Pythagoras, several chapters are related to description of his travels accompanied by the Achaemenid king Darius the Great, to Susa and Persepolis, and the area is described. This water channel separates the Iran Plateau from the Arabia Plate, has enjoyed an Iranian Identity since at least 2200 years ago. Before being given its present name, the Persian Gulf was called many different names, the classical Greek writers, like Herodotus, called it the Red Sea. In Babylonian texts, it was known as the sea above Akkad, the name of the gulf, historically and internationally known as the Persian Gulf after the land of Persia, has been disputed by some Arab countries since the 1960s
19.
Ecoregion
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An ecoregion is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than an ecozone. All three of these are less or greater than an ecosystem. Ecoregions cover relatively large areas of land or water, and contain characteristic, the biodiversity of flora, fauna and ecosystems that characterise an ecoregion tends to be distinct from that of other ecoregions. Three caveats are appropriate for all bio-geographic mapping approaches, firstly, no single bio-geographic framework is optimal for all taxa. Ecoregions reflect the best compromise for as many taxa as possible, secondly, ecoregion boundaries rarely form abrupt edges, rather, ecotones and mosaic habitats bound them. Thirdly, most ecoregions contain habitats that differ from their assigned biome, biogeographic provinces may originate due to various barriers. Some physical, some climatic and some ocean chemical related, the history of the term is somewhat vague as it was used in many contexts, forest classifications, biome classifications, biogeographic classifications, etc. The concept of ecoregion of Bailey gives more importance to ecological criteria, while the WWF concept gives more importance to biogeography, there is significant, but not absolute, spatial correlation among these characteristics, making the delineation of ecoregions an imperfect science. Such transition zones are called ecotones, Ecoregions can be categorized using an algorithmic approach or a holistic, “weight-of-evidence” approach where the importance of various factors may vary. An example of the approach is Robert Bailey’s work for the U. S. The intended purpose of ecoregion delineation may affect the method used, according to WWF, the boundaries of an ecoregion approximate the original extent of the natural communities prior to any major recent disruptions or changes. WWF has identified 867 terrestrial ecoregions, and approximately 450 freshwater ecoregions across the Earth, the use of the term ecoregion is an outgrowth of a surge of interest in ecosystems and their functioning. In particular, there is awareness of issues relating to spatial scale in the study and it is widely recognized that interlinked ecosystems combine to form a whole that is greater than the sum of its parts. The Global 200 is the list of ecoregions identified by WWF as priorities for conservation, Terrestrial ecoregions are land ecoregions, as distinct from freshwater and marine ecoregions. In this context, terrestrial is used to mean of land, WWF ecologists currently divide the land surface of the Earth into 8 major ecozones containing 867 smaller terrestrial ecoregions. The WWF effort is a synthesis of previous efforts to define. Many consider this classification to be decisive, and some propose these as stable borders for bioregional democracy initiatives. The eight terrestrial ecozones follow the major floral and faunal boundaries, identified by botanists and zoologists, ecozone boundaries generally follow continental boundaries, or major barriers to plant and animal distribution, like the Himalayas and the Sahara
20.
Saudi Arabia
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Saudi Arabia is bordered by Jordan and Iraq to the north, Kuwait to the northeast, Qatar, Bahrain and the United Arab Emirates to the east, Oman to the southeast and Yemen to the south. It is separated from Israel and Egypt by the Gulf of Aqaba and it is the only nation with both a Red Sea coast and a Persian Gulf coast and most of its terrain consists of arid desert and mountains. The area of modern-day Saudi Arabia formerly consisted of four regions, Hejaz, Najd and parts of Eastern Arabia. The Kingdom of Saudi Arabia was founded in 1932 by Ibn Saud and he united the four regions into a single state through a series of conquests beginning in 1902 with the capture of Riyadh, the ancestral home of his family, the House of Saud. Saudi Arabia has since been a monarchy, effectively a hereditary dictatorship governed along Islamic lines. The ultraconservative Wahhabi religious movement within Sunni Islam has been called the predominant feature of Saudi culture, with its global spread largely financed by the oil and gas trade. Saudi Arabia is sometimes called the Land of the Two Holy Mosques in reference to Al-Masjid al-Haram and Al-Masjid an-Nabawi, the state has a total population of 28.7 million, of which 20 million are Saudi nationals and 8 million are foreigners. The states official language is Arabic, petroleum was discovered on 3 March 1938 and followed up by several other finds in the Eastern Province. Saudi Arabia has since become the worlds largest oil producer and exporter, controlling the second largest oil reserves. The kingdom is categorized as a World Bank high-income economy with a high Human Development Index and is the only Arab country to be part of the G-20 major economies. However, the economy of Saudi Arabia is the least diversified in the Gulf Cooperation Council, the state has attracted criticism for its treatment of women and use of capital punishment. Saudi Arabia is an autocracy, has the fourth highest military expenditure in the world. Saudi Arabia is considered a regional and middle power, in addition to the GCC, it is an active member of the Organisation of Islamic Cooperation and OPEC. Following the unification of the Hejaz and Nejd kingdoms, the new state was named al-Mamlakah al-ʻArabīyah as-Suʻūdīyah by royal decree on 23 September 1932 by its founder, Abdulaziz Al Saud. Although this is translated as the Kingdom of Saudi Arabia in English it literally means the Saudi Arab kingdom. Its inclusion expresses the view that the country is the possession of the royal family. Al Saud is an Arabic name formed by adding the word Al, meaning family of or House of, in the case of the Al Saud, this is the father of the dynastys 18th century founder, Muhammad bin Saud. There is evidence that human habitation in the Arabian Peninsula dates back to about 125,000 years ago
21.
Jordan
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Jordan, officially The Hashemite Kingdom of Jordan, is an Arab kingdom in Western Asia, on the East Bank of the Jordan River. Jordan is bordered by Saudi Arabia to the east and south, Iraq to the north-east, Syria to the north, Israel, Palestine and the Dead Sea to the west, Jordan is strategically located at the crossroads of Asia, Africa and Europe. The capital, Amman, is Jordans most populous city as well as the countrys economic, what is now Jordan has been inhabited by humans since the Paleolithic period. Three stable kingdoms emerged there at the end of the Bronze Age, Ammon, Moab, later rulers include the Nabataean Kingdom, the Roman Empire, and the Ottoman Empire. After the Great Arab Revolt against the Ottomans in 1916 during World War I, the Emirate of Transjordan was established in 1921 by the then Emir Abdullah I and became a British protectorate. In 1946, Jordan became an independent state known as The Hashemite Kingdom of Transjordan. Jordan captured the West Bank, which it later lost in 1967, during the 1948 Arab–Israeli War, Jordan is a founding member of the Arab League and the Organisation of Islamic Cooperation, and is one of two Arab states to have signed a peace treaty with Israel. The country is a monarchy, but the king holds wide executive and legislative powers. Jordan is a relatively-small, semi-arid, almost-landlocked country with a population numbering at 9.5 million, Sunni Islam, practiced by around 92% of the population, is the dominant religion in Jordan. It coexists with an indigenous Christian minority, Jordan is considered to be among the safest of Arab countries in the Middle East, and has avoided long-term terrorism and instability. The kingdom is also a refuge to thousands of Iraqi Christians fleeing the Islamic State, while Jordan continues to accept refugees, the recent large influx from Syria placed substantial strain on national resources and infrastructure. Jordan is classified as a country of high human development with a middle income economy. The Jordanian economy, one of the smallest economies in the region, is attractive to foreign investors based upon a skilled workforce, the country is a major tourist destination, and also attracts medical tourism due to its well developed health sector. Nonetheless, a lack of resources, large flow of refugees. Jordan is named after the Jordan River, where Jesus is said to have been baptized, the origin of the rivers name is debated, but the most common explanation is that it derives from the word yarad, found in Hebrew, Aramaic, and other Semitic languages. Others regard the name as having an Indo-Aryan origin, combining the words yor and don, another theory is that it is from the Arabic root word wrd, as in people coming to a major source of water. The name Jordan appears in an ancient Egyptian papyrus called Papyrus Anastasi I, the lands of modern-day Jordan were historically called Transjordan, meaning beyond the Jordan River. The name was Arabized into Al-Urdunn during the Muslim conquest of the Levant, during crusader rule, it was called Oultrejordain
22.
Anatolia
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Anatolia, in geography known as Asia Minor, Asian Turkey, Anatolian peninsula, or Anatolian plateau, is the westernmost protrusion of Asia, which makes up the majority of modern-day Turkey. The region is bounded by the Black Sea to the north, the Mediterranean Sea to the south, the Sea of Marmara forms a connection between the Black and Aegean Seas through the Bosphorus and Dardanelles straits and separates Anatolia from Thrace on the European mainland. Traditionally, Anatolia is considered to extend in the east to a line between the Gulf of Alexandretta and the Black Sea to the Armenian Highlands, thus, traditionally Anatolia is the territory that comprises approximately the western two-thirds of the Asian part of Turkey. The Turkification of Anatolia began under the Seljuk Empire in the late 11th century, however, various non-Turkic languages continue to be spoken by minorities in Anatolia today, including Kurdish, Assyrian, Armenian, Arabic, Laz, Georgian, and Greek. Traditionally, Anatolia is considered to extend in the east to a line running from the Gulf of Alexandretta to the Black Sea. This traditional geographical definition is used, for example, in the latest edition of Merriam-Websters Geographical Dictionary, under this definition, Anatolia is bounded to the east by the Armenian Highlands, and the Euphrates before that river bends to the southeast to enter Mesopotamia. To the southeast, it is bounded by the ranges that separate it from the Orontes valley in Syria, the first name the Greeks used for the Anatolian peninsula was Ἀσία, presumably after the name of the Assuwa league in western Anatolia. As the name of Asia came to be extended to areas east of the Mediterranean. The name Anatolia derives from the Greek ἀνατολή meaning “the East” or more literally “sunrise”, the precise reference of this term has varied over time, perhaps originally referring to the Aeolian, Ionian and Dorian colonies on the west coast of Asia Minor. In the Byzantine Empire, the Anatolic Theme was a theme covering the western, the modern Turkish form of Anatolia is Anadolu, which again derives from the Greek name Aνατολή. The Russian male name Anatoly and the French Anatole share the same linguistic origin, in English the name of Turkey for ancient Anatolia first appeared c. It is derived from the Medieval Latin Turchia, which was used by the Europeans to define the Seljuk controlled parts of Anatolia after the Battle of Manzikert. Human habitation in Anatolia dates back to the Paleolithic, neolithic Anatolia has been proposed as the homeland of the Indo-European language family, although linguists tend to favour a later origin in the steppes north of the Black Sea. However, it is clear that the Anatolian languages, the oldest branch of Indo-European, have spoken in Anatolia since at least the 19th century BC. The earliest historical records of Anatolia stem from the southeast of the region and are from the Mesopotamian-based Akkadian Empire during the reign of Sargon of Akkad in the 24th century BC, scholars generally believe the earliest indigenous populations of Anatolia were the Hattians and Hurrians. The region was famous for exporting raw materials, and areas of Hattian-, one of the numerous cuneiform records dated circa 20th century BC, found in Anatolia at the Assyrian colony of Kanesh, uses an advanced system of trading computations and credit lines. They were speakers of an Indo-European language, the Hittite language, originating from Nesa, they conquered Hattusa in the 18th century BC, imposing themselves over Hattian- and Hurrian-speaking populations. According to the most widely accepted Kurgan theory on the Proto-Indo-European homeland, however, the Hittites adopted the cuneiform script, invented in Mesopotamia
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Alluvial plain
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An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. As the highlands due to weathering and water flow, the sediment from the hills is transported to the lower plain. Various creeks will carry the water further to a river, lake, bay, as the sediments are deposited during flood conditions in the floodplain of a creek, the elevation of the floodplain will be raised. As this reduces the channel capacity, the creek will, over time, seek new, lower paths. These processes, over time, will form the plain. The NCSS glossary instead suggests flood plain
24.
Al-Qurnah
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Al-Qurnah is a small town in southern Iraq about 74 km northwest of Basra, within the town of Nahairat. Qurna is located at the point of the Tigris and Euphrates rivers join to form the Shatt al-Arab. Local folklore holds Qurna to have been the site of the Garden of Eden, an ancient jujube tree is locally celebrated and shown to the tourists as the actual Tree of Knowledge of the Bible. The town experienced the Battle of Qurna during the Mesopotamian Campaign of World War I, the small Qurna Tourist Hotel was built during the Baathist period to encourage tourism for the region. However it is most likely not in use now, as of the start of the 2003 Iraq War, conditions at the site were reportedly woeful. Cracked pavement and bullet holes along with the condition of the tree itself made future tourism seem out of the question. However, the natural beauty and Western presence make it viable for development for tourism
25.
Shatt al-Arab
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The southern end of the river constitutes the border between Iraq and Iran down to the mouth of the river as it discharges into the Persian Gulf. The river is significant because it forms a natural border between Iran and the Arab world. It varies in width from about 232 metres at Basra to 800 metres at its mouth and it is thought that the waterway formed relatively recently in geologic time, with the Tigris and Euphrates originally emptying into the Persian Gulf via a channel further to the west. The Karun river, a tributary joins the waterway from the Iranian side, deposits large amounts of silt into the river. The area is judged to hold the largest date palm forest in the world, in the mid-1970s, the region included 17 to 18 million date palms, an estimated one-fifth of the worlds 90 million palm trees. But by 2002, war, salt, and pests had wiped out more than 14 million of the palms, many of the remaining 3 to 4 million trees are in poor condition. In Middle Persian literature and the Shahnama, the name اروند Arvand is used for the Tigris, Iranians also used this name specifically to designate the Shatt al-Arab during the later Pahlavi period, and continue to do so after the Iranian Revolution of 1979. The Iranian cities of Abadan and Khorramshahr and the Iraqi city, the tribes on both sides of the lower waterway, however, are Marsh Arabs, and the Ottoman Empire claimed to represent them. Tensions between the empires that extended across a wide range of religious, cultural and political conflicts. The Second Treaty of Erzurum was signed by the two parties in 1847 after protracted negotiations, which included British and Russian delegates. A protocol between the Ottomans and the Persians was signed in Istanbul in 1913, which declared that the Ottoman-Persian frontier run along the thalweg, in 1937, Iran and Iraq signed a treaty that settled the dispute over control of the Shatt al-Arab. By the late 1960s, the build-up of Iranian power under Shah Mohammad Reza Pahlavi, in April 1969, Iran abrogated the 1937 treaty over the Shatt al-Arab, and as such, Iran ceased paying tolls to Iraq when its ships used the Shatt al-Arab. Iraq threatened war over the Iranian move, but when on 24 April 1969 an Iranian tanker escorted by Iranian warships sailed down the Shatt al-Arab, Iraq being the militarily weaker state did nothing. The Iranian abrogation of the 1937 treaty marked the beginning of a period of acute Iraqi-Iranian tension that was to last until the Algiers Accords of 1975, all United Nations attempts to intervene as mediators were rebuffed. Under Saddam Hussein, Baathist Iraq claimed the entire waterway up to the Iranian shore as its territory, in response, Iran in the early 1970s became the main patron of Iraqi Kurdish groups fighting for independence from Iraq. In 1980, Hussein released a statement claiming to abrogate the treaty that he signed, international law, however, holds that in all cases no bilateral or multilateral treaty can be abrogated by one party only. The main thrust of the movement on the ground was across the waterway which was the stage for most of the military battles between the two armies. The waterway was Iraqs only outlet to the Persian Gulf, and thus, its shipping lanes were greatly affected by continuous Iranian attacks
26.
Fertile Crescent
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The Fertile Crescent is a crescent-shaped region containing the comparatively moist and fertile land of otherwise arid and semi-arid Western Asia, the Nile Valley and Nile Delta. Having originated in the study of ancient history, the concept developed and today retains meanings in international geopolitics. In current usage, all definitions of the Fertile Crescent include Mesopotamia, the land in and around the Tigris and Euphrates rivers, and the Levant, the eastern coast of the Mediterranean Sea. The region saw the development of some of the earliest human civilizations, technological advances made in the region include the development of writing, glass, the wheel, agriculture, and the use of irrigation. It is a region consisting chiefly of mountains in the north, the end of the western wing is Palestine, Assyria makes up a large part of the center, while the end of the eastern wing is Babylonia. This great semicircle, for lack of a name, may be called the Fertile Crescent and this desert-bay is a limestone plateau of some height—too high indeed to be watered by the Tigris and Euphrates, which have cut cañons obliquely across it. Hence we are obliged to coin a term and call it the Fertile Crescent, water sources include the Jordan River. The inner boundary is delimited by the dry climate of the Syrian Desert to the south, around the outer boundary are the Anatolian highlands to the north and the Sahara Desert to the west. As crucial as rivers and marshlands were to the rise of civilization in the Fertile Crescent, the area is important as the bridge between Africa and Eurasia. Coupled with the Saharan pump theory, this Middle Eastern land-bridge is of importance to the modern distribution of Old World flora and fauna. The Fertile Crescent had many diverse climates, and major climatic changes encouraged the evolution of many r type annual plants, the regions dramatic variety of elevation gave rise to many species of edible plants for early experiments in cultivation. The Fertile Crescent has a record of past human activity. The western zone around the Jordan and upper Euphrates rivers gave rise to the first known Neolithic farming settlements and this region, alongside Mesopotamia, also saw the emergence of early complex societies during the succeeding Bronze Age. There is also evidence from the region for writing and the formation of hierarchical statelevel societies. This has earned the region the nickname The cradle of civilization and it is in this region where the first libraries appeared, some 5,000 years ago. The oldest known library was found in northern Syria, in the ruins of Ebla— a major commercial center that was destroyed around 1650 BCE, both the Tigris and Euphrates start in the Taurus Mountains of what is today Turkey. Farmers in southern Mesopotamia had to protect their fields from flooding each year, to protect against flooding, they made levees. Since the Bronze Age, the regions natural fertility has been extended by irrigation works
27.
Swamp
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A swamp is a wetland that is forested. Many swamps occur along rivers where they are critically dependent upon natural water level fluctuations. Other swamps occur on the shores of large lakes, some swamps have hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodic inundation. The two main types of swamp are true or swamp forests and transitional or shrub swamps, in the boreal regions of Canada, the word swamp is colloquially used for what is more correctly termed a bog or muskeg. The water of a swamp may be water, brackish water or seawater. Some of the worlds largest swamps are found along rivers such as the Amazon, the Mississippi. Swamps are characterized by slow-moving to stagnant waters and they are usually associated with adjacent rivers or lakes. Swamps are features of areas with very low topographic relief, historically, humans have drained swamps to provide additional land for agriculture and to reduce the threat of diseases borne by swamp insects and similar animals. Many swamps have also undergone intensive logging, requiring the construction of drainage ditches and these ditches and canals contributed to drainage and, along the coast, allowed salt water to intrude, converting swamps to marsh or even to open water. Large areas of swamp were therefore lost or degraded, louisiana provides a classic example of wetland loss from these combined factors. Europe has probably lost nearly half its wetlands, New Zealand lost 90 percent of its wetlands over a period of 150 years. Ecologists recognise that swamps provide valuable ecological services including flood control, fish production, water purification, carbon storage, in many parts of the world authorities protect swamps. In parts of Europe and North America, swamp restoration projects are becoming widespread, often the simplest steps to restoring swamps involve plugging drainage ditches and removing levees. Swamps and other wetlands have traditionally held a very low property value compared to fields, prairies and they have a reputation for being unproductive land that cannot easily be utilized for human activities, other than perhaps hunting and trapping. Farmers, for example, typically drained swamps next to their fields so as to more land usable for planting crops. Many societies now realize that swamps are important to providing fresh water and oxygen to all life. Indeed, floodplain swamps are important in fish production. Government environmental agencies are taking steps to protect and preserve swamps, in Europe, major effort is being invested in the restoration of swamp forests along rivers
28.
Marsh
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A marsh is a wetland that is dominated by herbaceous rather than woody plant species. Marshes can often be found at the edges of lakes and streams and they are often dominated by grasses, rushes or reeds. If woody plants are present they tend to be low-growing shrubs, Marshes provide a habitat for many species of plants, animals, and insects that have adapted to living in flooded conditions. The plants must be able to survive in wet mud with low oxygen levels, many of these plants therefore have aerenchyma, channels within the stem that allow air to move from the leaves into the rooting zone. Marsh plants also tend to have rhizomes for underground storage and reproduction, familiar examples include cattails, sedges, papyrus and sawgrass. Aquatic animals, from fish to salamanders, are able to live with a low amount of oxygen in the water. Some can obtain oxygen from the air instead, while others can live indefinitely in conditions of low oxygen, Marshes provide habitats for many kinds of invertebrates, fish, amphibians, waterfowl and aquatic mammals. Marshes have extremely high levels of production, some of the highest in the world. Marshes also improve water quality by acting as a sink to filter pollutants, Marshes are able to absorb water during periods of heavy rainfall and slowly release it into waterways and therefore reduce the magnitude of flooding. The pH in marshes tends to be neutral to alkaline, as opposed to bogs, Marshes differ depending mainly on their location and salinity. Both of these factors influence the range and scope of animal and plant life that can survive. The three main types of marsh are salt marshes, freshwater marshes, and freshwater marshes. These three can be found worldwide and each contains a different set of organisms, saltwater marshes are found around the world in mid to high latitudes, wherever there are sections of protected coastline. They are located close enough to the shoreline that the motion of the tides affects them and they flourish where the rate of sediment buildup is greater than the rate at which the land level is sinking. Salt marshes are dominated by specially adapted rooted vegetation, primarily salt-tolerant grasses, salt marshes are most commonly found in lagoons, estuaries, and on the sheltered side of shingle or sandspit. The currents there carry the fine particles around to the side of the spit. These locations allow the marshes to absorb the nutrients from the water running through them before they reach the oceans. Coastal development and urban sprawl has caused significant loss of these essential habitats, although considered a freshwater marsh, this form of marsh is affected by the ocean tides
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Hydrology
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Hydrology is the scientific study of the movement, distribution, and quality of water on Earth and other planets, including the water cycle, water resources and environmental watershed sustainability. A practitioner of hydrology is a hydrologist, working within the fields of earth or environmental science, physical geography, geology or civil, Hydrology subdivides into surface water hydrology, groundwater hydrology, and marine hydrology. Domains of hydrology include hydrometeorology, surface hydrology, hydrogeology, drainage-basin management and water quality, oceanography and meteorology are not included because water is only one of many important aspects within those fields. Hydrological research can inform environmental engineering, policy and planning, the term hydrology comes from Greek, ὕδωρ, hýdōr, water, and λόγος, lógos, study. Chemical hydrology is the study of the characteristics of water. Ecohydrology is the study of interactions between organisms and the hydrologic cycle, hydrogeology is the study of the presence and movement of groundwater. Hydroinformatics is the adaptation of technology to hydrology and water resources applications. Hydrometeorology is the study of the transfer of water and energy between land and water surfaces and the lower atmosphere. Isotope hydrology is the study of the signatures of water. Surface hydrology is the study of processes that operate at or near Earths surface. Drainage basin management covers water-storage, in the form of reservoirs, water quality includes the chemistry of water in rivers and lakes, both of pollutants and natural solutes. Determining the water balance of a region, mitigating and predicting flood, landslide and drought risk. Real-time flood forecasting and flood warning, designing irrigation schemes and managing agricultural productivity. Part of the module in catastrophe modeling. Designing dams for water supply or hydroelectric power generation, designing sewers and urban drainage system. Analyzing the impacts of antecedent moisture on sanitary sewer systems, predicting geomorphologic changes, such as erosion or sedimentation. Assessing the impacts of natural and anthropogenic environmental change on water resources, assessing contaminant transport risk and establishing environmental policy guidelines. Hydrology has been a subject of investigation and engineering for millennia, for example, about 4000 BC the Nile was dammed to improve agricultural productivity of previously barren lands
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Mesopotamia
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In the Iron Age, it was controlled by the Neo-Assyrian and Neo-Babylonian Empires. The Sumerians and Akkadians dominated Mesopotamia from the beginning of history to the fall of Babylon in 539 BC. It fell to Alexander the Great in 332 BC, and after his death, around 150 BC, Mesopotamia was under the control of the Parthian Empire. Mesopotamia became a battleground between the Romans and Parthians, with parts of Mesopotamia coming under ephemeral Roman control. In AD226, eastern part of it fell to the Sassanid Persians, division of Mesopotamia between Roman and Sassanid Empires lasted until the 7th century Muslim conquest of Persia of the Sasanian Empire and Muslim conquest of the Levant from Byzantines. A number of primarily neo-Assyrian and Christian native Mesopotamian states existed between the 1st century BC and 3rd century AD, including Adiabene, Osroene, and Hatra, Mesopotamia is the site of the earliest developments of the Neolithic Revolution from around 10,000 BC. The regional toponym Mesopotamia comes from the ancient Greek root words μέσος middle and ποταμός river and it is used throughout the Greek Septuagint to translate the Hebrew equivalent Naharaim. In the Anabasis, Mesopotamia was used to designate the land east of the Euphrates in north Syria, the Aramaic term biritum/birit narim corresponded to a similar geographical concept. The neighbouring steppes to the west of the Euphrates and the part of the Zagros Mountains are also often included under the wider term Mesopotamia. A further distinction is made between Northern or Upper Mesopotamia and Southern or Lower Mesopotamia. Upper Mesopotamia, also known as the Jazira, is the area between the Euphrates and the Tigris from their sources down to Baghdad, Lower Mesopotamia is the area from Baghdad to the Persian Gulf and includes Kuwait and parts of western Iran. In modern academic usage, the term Mesopotamia often also has a chronological connotation and it is usually used to designate the area until the Muslim conquests, with names like Syria, Jazirah, and Iraq being used to describe the region after that date. It has been argued that these later euphemisms are Eurocentric terms attributed to the region in the midst of various 19th-century Western encroachments, Mesopotamia encompasses the land between the Euphrates and Tigris rivers, both of which have their headwaters in the Armenian Highlands. Both rivers are fed by tributaries, and the entire river system drains a vast mountainous region. Overland routes in Mesopotamia usually follow the Euphrates because the banks of the Tigris are frequently steep and difficult. The climate of the region is semi-arid with a vast desert expanse in the north which gives way to a 15,000 square kilometres region of marshes, lagoons, mud flats, in the extreme south, the Euphrates and the Tigris unite and empty into the Persian Gulf. In the marshlands to the south of the area, a complex water-borne fishing culture has existed since prehistoric times, periodic breakdowns in the cultural system have occurred for a number of reasons. Alternatively, military vulnerability to invasion from marginal hill tribes or nomadic pastoralists has led to periods of trade collapse and these trends have continued to the present day in Iraq
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Civilization
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Historically, a civilization was a so-called advanced culture in contrast to more supposedly primitive cultures. As an uncountable noun, civilization also refers to the process of a society developing into a centralized, urbanized, stratified structure, Civilization concentrates power, extending human control over the rest of nature, including over other human beings. The earlier neolithic technology and lifestyle was established first in the Middle East, and later in the Yangtze and Yellow River basins in China, similar pre-civilized neolithic revolutions also began independently from 7,000 BCE in such places as northwestern South America and Mesoamerica. These were among the six civilizations worldwide that arose independently, Mesopotamia is the site of the earliest developments of the Neolithic Revolution from around 10,000 BCE, with civilizations developing from 6,500 years ago. Towards the end of the Neolithic period, various elitist Chalcolithic civilizations began to rise in various cradles from around 3300 BCE. Chalcolithic civilizations, as defined above, also developed in Pre-Columbian Americas and, despite an early start in Egypt, Axum and Kush, the English word civilization comes from the 16th-century French civilisé, from Latin civilis, related to civis and civitas. The fundamental treatise is Norbert Eliass The Civilizing Process, which traces social mores from medieval courtly society to the Early Modern period, in The Philosophy of Civilization, Albert Schweitzer outlines two opinions, one purely material and the other material and ethical. Adjectives like civility developed in the mid-16th century, the abstract noun civilization, meaning civilized condition, came in the 1760s, again from French. The word was therefore opposed to barbarism or rudeness, in the pursuit of progress characteristic of the Age of Enlightenment. In the late 1700s and early 1800s, during the French revolution, civilization was used in the singular, never in the plural and this is still the case in French. The use of civilizations as a noun was in occasional use in the 19th century. Only in this sense does it become possible to speak of a medieval civilization. Already in the 18th century, civilization was not always seen as an improvement, one historically important distinction between culture and civilization is from the writings of Rousseau, particularly his work about education, Emile. From this, a new approach was developed, especially in Germany, first by Johann Gottfried Herder and this sees cultures as natural organisms, not defined by conscious, rational, deliberative acts, but a kind of pre-rational folk spirit. Civilization, in contrast, though more rational and more successful in material progress, is unnatural and leads to vices of social life such as guile, hypocrisy, envy and avarice. In World War II, Leo Strauss, having fled Germany, argued in New York that this opinion of civilization was behind Nazism, Social scientists such as V. Gordon Childe have named a number of traits that distinguish a civilization from other kinds of society. Andrew Nikiforuk argues that civilizations relied on shackled human muscle and it took the energy of slaves to plant crops, clothe emperors, and build cities and considers slavery to be a common feature of pre-modern civilizations. All civilizations have depended on agriculture for subsistence, grain farms can result in accumulated storage and a surplus of food, particularly when people use intensive agricultural techniques such as artificial fertilization, irrigation and crop rotation
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Uruk period
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The Uruk period existed from the protohistoric Chalcolithic to Early Bronze Age period in the history of Mesopotamia, following the Ubaid period and succeeded by the Jemdet Nasr period. Named after the Sumerian city of Uruk, this saw the emergence of urban life in Mesopotamia. It was followed by the Sumerian civilization, the late Uruk period saw the gradual emergence of the cuneiform script and corresponds to the Early Bronze Age, it may also be called the Protoliterate period. It was during this period that pottery painting declined as copper started to become popular, the term Uruk period was coined at a conference in Baghdad in 1930, where at the same time the Jemdet Nasr and Ubaid periods were defined. Periodization is after archaeological layers at Uruk, thus, Uruk XVIII–XIV are not part of the Uruk period proper but are comprised by the Ubaid period. The Uruk period proper corresponds to the layers Uruk XIV–IV, with the late phase Uruk IV lasting ca, Uruk III reaches up to 3000 BC and into the Early Dynastic period. Around 3600 BC, during the Middle Uruk period, Uruk trade networks started to expand to other parts of Mesopotamia, according to archaeologist Konstantine Pitskhelauri, this expansion started even earlier, at the end of the 5th millennium BC, and continued in the 4th millennium. Large masses of Uruk migrants settled in the South, and later in the North Caucasus, the sites in this general area include Habuba Kabira in Syria, and Arslantepe in Turkey. Uruk expansion to the northeast included sites like Godin Tepe in Iran, Tepe Gawra, in northwest Iraq, is another important site with deep stratigraphy that includes the Uruk period in later layers. Hamoukar is a site in northeastern Syria that has been recently excavated. Uruk enclaves have also identified at Tell Brak and Nineveh in northern Mesopotamia, and on the Syrian Euphrates at Qrayya. On the Euphrates in Anatolia, Uruk enclaves were found at Hassek Hoyuk, Samsat and these early city-states had strong signs of government organization, evident even in items such as cheap, mass-produced beveled rim bowls which were made to be discarded. These bowls may have handed out at community outings, such as large-scale constructions. The cities grew to cover up to 250 acres and supported up to 10, the Uruk world system, the dynamics of expansion of early Mesopotamian civilisation. Chicago, London, The University of Chicago Press Crawford, Harriet E. W. Sumer, the Art and Architecture of the Ancient Orient. Lamb, Hubert H. Climate, History, and the Modern World, History of Mesopotamia History of Sumer Jawa
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Cradle of civilization
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The cradle of civilization is a term referring to locations where, according to current archaeological data, civilization is understood to have emerged. Current thinking is that there was no single cradle, but several civilizations that developed independently, other civilizations arose in Asia among cultures situated along large river valleys, notably the Indus River in the Indian Subcontinent and the Yellow River in China. The extent to which there was significant influence between the early civilizations of the Near East and those of East Asia is disputed, scholars accept that the civilizations of Mesoamerica, mainly in modern Mexico, and Norte Chico in present-day Peru emerged independently from those in Eurasia. The concept cradle of civilization is the subject of much debate, the figurative use of cradle to mean the place or region in which anything is nurtured or sheltered in its earlier stage is traced by the OED to Spenser. Charles Rollins Ancient History has Egypt that served at first as the cradle of the holy nation, the phrase cradle of civilization plays a certain role in national mysticism. It has been used in Eastern as well as Western cultures, for instance, in Hindu nationalism, the terms also appear in esoteric pseudohistory, such as the Urantia Book, claiming the title for the second Eden, or the pseudoarchaeology related to Megalithic Britain. The earliest proto-urban settlements with several thousand inhabitants emerged in the Neolithic, the first cities to house several tens of thousands were Memphis and Uruk, by the 31st century BCE. Historic times are marked apart from times when records of the past begin to be kept for the benefit of future generations. A civilized way of life is linked to conditions coming almost exclusively from intensive agriculture. A traditional theory of the spread of civilization is that it began in the Fertile Crescent, scholars more generally now believe that civilizations arose independently at several locations in both hemispheres. They have observed that sociocultural developments occurred along different timeframes, sedentary and nomadic communities continued to interact considerably, they were not strictly divided among widely different cultural groups. Current scholarship generally identifies six sites where civilization emerged independently, Mesopotamia, the Nile River, the Indus River, the Yellow River, the Central Andes, one of the most notable PPNA settlements is Jericho in the Levant region, thought to be the worlds first town. In Mesopotamia, the convergence of the Tigris and Euphrates rivers produced rich fertile soil, the civilizations that emerged around these rivers are among the earliest known non-nomadic agrarian societies. It is because of this that the fertile crescent region, the period known as the Ubaid period is the earliest known period on the alluvial plain although it is likely earlier periods exist obscured under the alluvium. It was during the Ubaid period that the movement towards urbanization began, eridu is the oldest Sumerian site settled during this period, around 5300 BCE, and the city of Ur also first dates to the end of this period. In the south, the Ubaid period had a long duration from around 6500 to 3800 BCE. Named after the Sumerian city of Uruk, this saw the emergence of urban life in Mesopotamia and, during its later phase. Proto-writing in the dates to around 3500 BCE, with the earliest texts dating to 3300 BCE
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Marsh Arabs
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Many of the marshes inhabitants were displaced when the wetlands were drained during and after the 1991 uprisings in Iraq. The society of the Marsh Arabs was divided into two groups by occupation. One group bred and raised water buffalo while others cultivated crops such as rice, barley, wheat and pearl millet, they kept some sheep. Rice cultivation was important, it was carried out in small plots cleared in April. Cultivation seasons were marked by the rising and setting of stars, such as the Pleiades. Some branches of the Maʻdān were nomadic pastoralists, erecting temporary dwellings, by the early 1990s, however, up to 60% of the total amount of fish caught in Iraqs inland waters came from the marshes. In the later twentieth century a main occupation entered Marsh Arab life. The majority of Marsh Arabs are Twelver Shiʿi Muslims, though in the small communities of Mandaic-speaking Mandaeans lived alongside them. The inhabitants long association with tribes within Persia may have influenced the spread of the Shī‘ī denomination within the marshes, as with most tribes of southern Iraq, the main authority was the tribal shaikh. The mudhif is used as a place to settle disputes, to carry out diplomacy with other tribes and as a point for religious. It is also the place where visitors are offered hospitality, although the tribal shaykh was the principal figure, each Maʻdān village would also follow the authority of the hereditary qalit headman of a tribes particular section. Blood feuds, which could only be settled by the qalit, were a feature of Marsh Arab life, many of the Marsh Arabs codes of behaviour were similar to those of the desert tribes. Most Marsh Arabs lived in arched reed houses considerably smaller than a mudhif, houses had entrances at both ends and a screen in the middle, one end was used as a dwelling and the other end was used to shelter animals in bad weather. A raba was a dwelling, distinguished by a north-facing entrance. The marsh environment meant that certain diseases, such as schistosomiasis and malaria, were endemic, Maʻdānī agriculture and homes were also vulnerable to periodic droughts, the origins of the Maʻdān are still a matter of some interest. British colonial ethnographers found it difficult to some of the Maʻdāns social customs. Many scholars have proposed historical and genetic links between the Marsh Arabs and the ancient Sumerians based on shared agricultural practices and methods of house-building. There is, however, no record of the marsh tribes until the ninth century
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Confluence
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In geography, a confluence is the meeting of two or more bodies of water. The term is used to describe the meeting of tidal or other non-riverine bodies of water. A one-mile portion of the Industrial Canal in New Orleans accommodates the Gulf Intracoastal Waterway, niagara-on-the-Lake, Ontario, Canada is at the confluence of the Niagara River and Lake Ontario. The junction of the Green River and Colorado River forms the heart of Canyonlands National Park in Utahs Canyon Country, the Sangam, near Allahabad, India, where the sacred rivers Ganges and Yamuna meet to create one of the holiest places in Hinduism. The Ohio River is formed by the confluence of the Monongahela and Allegheny rivers, located in Pittsburgh, the Madison, Jefferson and Gallatin Rivers in Three Forks, Montana form the confluence of the Missouri River, one of the longest rivers in the United States. Kuala Lumpur, the capital of Malaysia, is at the confluence of the Gombak River and the Klang River. Passau known also as the Dreiflüssestadt, because the Danube River is joined there by the Inn River from the South, manaus, Brazil is on the Rio Negro near its confluence with the Amazon. It is the port and a hub for the regions extensive river system. Osijek, Croatia, is on the bank of the river Drava 25 km upstream of its confluence with the Danube. Belgrade, the capital of Serbia lies at the confluence of the Sava, the Hochelaga Archipelago, including the island and city of Montreal, is located at the confluence of the St. Lawrence River and Ottawa River in Quebec, Canada. Winnipeg, Canada, is at the confluence of the Red River, the area is referred to as The Forks by locals, and has been an important trade location for over 6000 years. The confluence of the rivers Danube and Morava in Devín on the border between Slovakia and Austria, triangle of Three Emperors, former tripoint in Europe. Cairo, Illinois, in the United States, where the Ohio River flows into the Mississippi River, St. Louis, Missouri, is built just south of the confluence of the Mississippi River and the Missouri River. Lyon, France is located on the confluence of the Saône and Rhone rivers, lytton, British Columbia, Canada, is located at the confluence of the muddy Fraser River and the clearer Thompson River. The confluence between the Franklin River and Gordon River in south-western Tasmania The confluence of the Snake and Columbia River at the Tri-Cities of Washington, the confluence of the rivers Pivka and Rak is one of the largest subterranean confluences in Europe. The confluence at Lokoja, Nigeria, where the Niger and Benue rivers merge, the Sudanese capital of Khartoum, located at the confluence of the White Nile and the Blue Nile. This merging point is the beginning of the Nile, columbus, Ohio, in the United States is at the confluence of the Scioto and Olentangy rivers. Luang Prabang in Laos is at the confluence of the Mekong, River Kabul and River Swat at Attock, in Pakistan
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Southeastern Anatolia Project
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The total cost of the project is 42.1 billion Turkish lira, of which 30.6 billion TL of this investment was realized at the end of 2010. The real investment was 72. 6% for the end of 2010, the project area covers nine provinces which are located in the basins of the Euphrates and Tigris and in Upper Mesopotamia. Current activities under GAP include sectors such as agriculture and irrigation, hydroelectric production, urban and rural infrastructure, forestry, education. Water resources envisages the construction of 22 dams and 19 power plants, seven airports have been finished and active. The GAP cargo airport in Şırnak, which also the biggest in Turkey, has been completed, the initial idea and decision to utilize the waters of the Euphrates and Tigris rivers came from Atatürk, the founder of the Republic. In the 1920s and 1930s, the need for energy was a priority issue. The Electricity Studies Administration was founded in 1936 to investigate how rivers in the country could be utilized for energy production, the Administration began its detailed studies with the Keban Dam Project and established observation stations to assess the flow and other characteristics of the Euphrates. The development program encompassed such sectors as irrigation, hydraulic energy, agriculture, rural and urban infrastructure, forestry, education, tensions between Turkey, Syria and Iraq were raised from time to time due to GAP. Syria and Iraq demanded more water to be released, while Turkey declined so as to form the dam reservoirs, because of this GAP is one of the worlds most well protected dam projects, especially against aircraft. GAP also almost came to a halt in the early 1990s due to the high level of Kurdish guerillas activities in the region. A number of crises also played a very important part in the delays of GAP. The UN embargo on Iraq had negative effects on development efforts and regions trade with Middle Eastern countries, furthermore, imbalances in public financing delayed the financing needs of the project. Finally, a number of questions needed clearing over the flooding of several historical sites as well as local residences as described in the Social effect section. Historically, Southeastern Anatolia was located on the route between East and West. The region had been an important source of cultural diversity, however the changes in the trading routes and the agricultural methods ended the old importance of the region. The 1989 Master Plan had aimed to initiate the revitalization of the economic, the rise in the income of the region was directly transferred to restoration and revitalization of the cultural activities in the region, instead of moving into the national budget. This master plan did not reach its goals because of the issues stated under the introduction section, however, for this negative perspective, with the international community involvement, project added new dimensions and concepts to the definitions. The concerns and concepts of the environment, sustainability and participation, the revised GAP Regional Development Plan with a new understanding is currently in place
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Floodplain
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In other words, a floodplain is an area near a river or a stream which floods when the water level reaches flood stage. Flood plains are made by a meander eroding sideways as it travels downstream, when a river breaks its banks and floods, it leaves behind layers of alluvium. These gradually build up to create the floor of the flood plain, floodplains generally contain unconsolidated sediments, often extending below the bed of the stream. These are accumulations of sand, gravel, loam, silt, and/or clay, and are often important aquifers, geologically ancient floodplains are often represented in the landscape by fluvial terraces. These are old floodplains that remain relatively high above the present floodplain and it is probable that any section of such an alluvial plain would show deposits of a similar character. The floodplain during its formation is marked by meandering or anastomotic streams, oxbow lakes and bayous, marshes or stagnant pools, and is occasionally completely covered with water. When the drainage system has ceased to act or is diverted for any reason. The floodplain differs, however, because it is not altogether flat and it has a gentle slope downstream, and often, for a distance, from the side towards the center. The floodplain is the place for a river to dissipate its energy. Meanders form over the floodplain to slow down the flow of water, in terms of flood management the upper part of the floodplain is crucial as this is where the flood water control starts. Artificial canalisation of the river here will have a impact on wider flooding. This is the basis of flood management. Floodplains can support particularly rich ecosystems, both in quantity and diversity, tugay forests form an ecosystem associated with floodplains, especially in Central Asia. They are a category of riparian zones or systems, a floodplain can contain 100 or even 1,000 times as many species as a river. Microscopic organisms thrive and larger species enter a rapid breeding cycle, opportunistic feeders move in to take advantage. The production of nutrients peaks and falls away quickly, however the surge of new growth endures for some time and this makes floodplains particularly valuable for agriculture. River flow rates are undergoing change following suit with climate change and this change is a threat to the riparian zones and other flood plain forests. These forests have over time synced their seedling deposits after the peaks in flow to best take advantage of the nutrient rich soil generated by peak flow
38.
Karun
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The Kārun is Irans most affluent and only navigable river. The Karun continues toward the Persian Gulf, forking into two branches on its delta - the Bahmanshir and the Haffar - that join Arvand Roud. The important Island of Abadan is located between two branches of the Karun. The port city of Khorramshahr is divided from the Island of Abadan by the Haffar branch, juris Zarins and other scholars have identified the Karun as one of the four rivers of Eden, the others being the Tigris, the Euphrates and either the Wadi Batin or the Karkheh. In early classical times, the Karun was known as the Pasitigris, the modern medieval and modern name, Karun, is a corruption of the name Kuhrang, which is still maintained by one of the two primary tributaries of the Karun. It originates in the Zagros Mountains of western Iran, on the slopes of 4,221 m Zard-Kuh, the river flows south and west through several prominent mountain ridges, and receives additional water from the Vanak on the south bank and the Bazuft on the north. These tributaries add to the catchment of the river above the Karun-4 Dam.25 kilometres downstream, the Khersan flows into an arm of the reservoir from the southeast. The river passes through this reservoir and flows through a canyon, now in a northwest direction, past Izeh. The Karun then turns north into the reservoir of Shahid Abbaspour Dam, the Karun flows southwest into the impoundment of Masjed Soleyman Dam, then turns northwest. Finally, it leaves the foothills and flows south past Shushtar, the largest river by discharge in Iran, the Karun Rivers watershed covers 65,230 square kilometres in parts of two Iranian provinces. The river is around 950 kilometres long and has a discharge of 575 cubic metres per second. The largest city on the river is Ahvaz, with over 1.3 million inhabitants, other important cities include Shushtar, Khorramshahr, Masjed-Soleyman, and Izeh. Much of Khuzestans transport and resources are connected in one way or another to the Karun, since the British first discovered oil at Masjed-Soleyman, the Karun has been an important route for the transport of petroleum to the Persian Gulf, and remains an important commercial waterway. Water from the Karun provides irrigation to over 280,000 hectares of the surrounding plain, the Karun River valley was once inhabited by the Elamite civilization which rose about 2,700 B. C. At several points in history, Mesopotamian civilizations such as Ur and Babylon overthrew the Elamites and gained control of the Karun, however, the Elamite empire lasted until about 640 B. C. when the Assyrians overran it. The city of Susa, near the city of Shush between the Dez and Karkheh rivers, was one of their largest before it was destroyed by the invaders. In two of several competing theories about the origins and location of the Garden of Eden, the Karun is presumed to be the Gihon River that is described in the Biblical book of Genesis. The name of the river is derived from the peak, Kuhrang
39.
Reed (plant)
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Reed is a common name for several tall, grass-like plants of wetlands. Thatching reed, another restio species originating from the geographic region. Phragmites australis, the reed, is used in many areas for thatching roofs. In the United Kingdom, common reed used for purpose is known as Norfolk reed or water reed. However, wheat reed and Devon reed are not in fact reed at all, constructed wetland Reed bed Reed boat Reed fields Thatching
40.
Juncaceae
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Juncaceae is a family of flowering plants, commonly known as the rush family. It consists of eight genera and about 464 known species of slow-growing and they often grow on infertile soils in a wide range of moisture conditions. The best-known and largest genus is Juncus, most of the Juncus species grow exclusively in wetland habitats. A few rushes, such as Juncus bufonius are annuals, the leaves are evergreen and well-developed in a basal aggregation on an erect stem. Only in the genus Distichia are the leaves distichous, the rushes of the genus Juncus have flat, hairless leaves or cylindrical leaves. The leaves of the wood-rushes of the genus Luzula are always flat, the plants are hermaphroditic or, rarely, dioecious. The small flowers are arranged in inflorescences of loose cymes, and this family typically has reduced perianth segments called tepals. These are usually arranged in two whorls, each containing three thin, papery tepals and they are not bright or flashy in appearance, and their color can vary from greenish to whitish, brown, purple, black, or hyaline. The three stigmas are in the center of the flowers, as is characteristic of monocots, all of the flower parts appear in multiples of three. The fruit is usually a nonfleshy, three-sectioned dehiscent capsule containing many seeds, the dried pith of plants of this family were used to make a type of candle known as a rushlight. The soft rush is called igusa in Japanese and is used to weave the soft surface cover of tatami mats, in medieval Europe, loose fresh rushes would be strewn on earthen floors in dwellings for cleanliness and insulation. Particularly favored for such a purpose was Acorus calamus, but despite its vernacular name sweet rush, it is a plant from a different monocot order. Information and pictures Rush, the name for species of juncus
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Papyrus
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The word papyrus /pəˈpaɪrəs/ refers to a thick precursor to modern paper made from the pith of the papyrus plant, Cyperus papyrus. Papyrus can also refer to a document written on sheets of papyrus joined together side by side and rolled up into a scroll, the plural for such documents is papyri. Papyrus is first known to have used in ancient Egypt. It was also used throughout the Mediterranean region and in Kingdom of Kush, the Ancient Egyptians used papyrus as a writing material, as well as employing it commonly in the construction of other artifacts such as reed boats, mats, rope, sandals, and baskets. Papyrus was first manufactured in Egypt as far back as the fourth millennium BCE, the earliest archaeological evidence of papyrus was excavated in 2012 and 2013 at Wadi al-Jarf, an ancient Egyptian harbor located on the Red Sea coast. The papyrus rolls describe the last years of building the Great Pyramid of Giza, in the first centuries BCE and CE, papyrus scrolls gained a rival as a writing surface in the form of parchment, which was prepared from animal skins. Sheets of parchment were folded to form quires from which book-form codices were fashioned, early Christian writers soon adopted the codex form, and in the Græco-Roman world, it became common to cut sheets from papyrus rolls to form codices. Codices were an improvement on the scroll, as the papyrus was not pliable enough to fold without cracking. Papyrus had the advantage of being cheap and easy to produce. Unless the papyrus was of quality, the writing surface was irregular. Its last appearance in the Merovingian chancery is with a document of 692, the latest certain dates for the use of papyrus are 1057 for a papal decree, under Pope Victor II, and 1087 for an Arabic document. Its use in Egypt continued until it was replaced by more inexpensive paper introduced by Arabs who originally learned of it from the Chinese, by the 12th century, parchment and paper were in use in the Byzantine Empire, but papyrus was still an option. Papyrus was made in several qualities and prices, pliny the Elder and Isidore of Seville described six variations of papyrus which were sold in the Roman market of the day. These were graded by quality based on how fine, firm, white, grades ranged from the superfine Augustan, which was produced in sheets of 13 digits wide, to the least expensive and most coarse, measuring six digits wide. Materials deemed unusable for writing or less than six digits were considered commercial quality and were pasted edge to edge to be used only for wrapping, until the middle of the 19th century, only some isolated documents written on papyrus were known. They did not contain literary works, the first modern discovery of papyri rolls was made at Herculaneum in 1752. Until then, the papyri known had been a few surviving from medieval times. The English word papyrus derives, via Latin, from Greek πάπυρος, Greek has a second word for it, βύβλος
42.
Water buffalo
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The water buffalo or domestic Asian water buffalo is a large bovid originating in South Asia, Southeast Asia, and China. Today, it is found in Europe, Australia, South America. The wild water buffalo native to Southeast Asia is considered a different species, Water buffalo were traded from the Indus Valley Civilisation to Mesopotamia, in modern Iraq,2500 BC by the Meluhhas. The seal of a scribe employed by an Akkadian king shows the sacrifice of water buffalo, at least 130 million domestic water buffalo exist, and more people depend on them than on any other domestic animal. They are especially suitable for tilling rice fields, and their milk is richer in fat, the large feral population of northern Australia became established in the late 19th century, and smaller feral herds are in New Guinea, Tunisia, and northeastern Argentina. Feral herds are present in New Britain, New Ireland, Irian Jaya, Papua New Guinea, Colombia, Guyana, Suriname, Brazil. The skin of buffalo is black, but some specimens may have dark. Swamp buffalo have a skin at birth, but become slate blue later. Albinoids are present in some populations, River buffalo have comparatively longer faces, smaller girths, and bigger limbs than swamp buffalo. Their dorsal ridges extend further back and taper off more gradually and their horns grow downward and backward, then curve upward in a spiral. Swamp buffalo are heavy-bodied and stockily built, the body is short, the forehead is flat, the eyes prominent, the face short, and the muzzle wide. The neck is long, and the withers and croup are prominent. A dorsal ridge extends backward and ends abruptly just before the end of the chest and their horns grow outward, and curve in a semicircle, but always remain more or less on the plane of the forehead. The tail is short, reaching only to the hocks, height at withers is 129–133 cm for males, and 120–127 cm for females. They range in weight from 300–550 kg, but weights of over 1,000 kg have also been observed, Tedong bonga is a black pied buffalo featuring a unique black and white colouration that is favoured by the Toraja of Sulawesi. The swamp buffalo has 48 chromosomes, the buffalo has 50 chromosomes. The two types do not readily interbreed, but fertile offspring can occur, buffalo-cattle hybrids have not been observed to occur, but the embryos of such hybrids reach maturity in laboratory experiments, albeit at lower rates than non-hybrids. The rumen of the buffalo has important differences from that of other ruminants
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Endemism
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The extreme opposite of endemism is cosmopolitan distribution. An alternative term for a species that is endemic is precinctive, the word endemic is from New Latin endēmicus, from Greek ενδήμος, endēmos, native. Endēmos is formed of en meaning in, and dēmos meaning the people, the term, precinctive, has been suggested by some scientists, and was first used in botany by MacCaughey in 1917. It is the equivalent of endemism, precinction was perhaps first used by Frank and McCoy. That definition excludes artificial confinement of examples by humans in far-off botanical gardens or zoological parks, physical, climatic, and biological factors can contribute to endemism. The orange-breasted sunbird is found in the fynbos vegetation zone of southwestern South Africa. The glacier bear is found only in limited places in Southeast Alaska, political factors can play a part if a species is protected, or actively hunted, in one jurisdiction but not another. There are two subcategories of endemism, paleoendemism and neoendemism, paleoendemism refers to species that were formerly widespread but are now restricted to a smaller area. Neoendemism refers to species that have arisen, such as through divergence and reproductive isolation or through hybridization. Endemics can easily become endangered or extinct if their restricted habitat changes, particularly—but not only—due to human actions, there were millions of both Bermuda petrels and Bermuda cedars in Bermuda when it was settled at the start of the seventeenth century. By the end of the century, the petrels were thought extinct, cedars, already ravaged by centuries of shipbuilding, were driven nearly to extinction in the twentieth century by the introduction of a parasite. Bermuda petrels and cedars are now rare, as are species endemic to Bermuda
44.
Rodent
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Rodents are mammals of the order Rodentia, which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all species are rodents, they are found in vast numbers on all continents except Antarctica. They are the most diversified mammalian order and live in a variety of terrestrial habitats, Species can be arboreal, fossorial, or semiaquatic. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, hamsters, and capybaras. Other animals such as rabbits, hares, and pikas, whose incisors also grow continually, were included with them, but are now considered to be in a separate order. Nonetheless, Rodentia and Lagomorpha are sister groups, sharing a most recent common ancestor, most rodents are small animals with robust bodies, short limbs, and long tails. They use their incisors to gnaw food, excavate burrows. Most eat seeds or other plant material, but some have more varied diets and they tend to be social animals and many species live in societies with complex ways of communicating with each other. Mating among rodents can vary from monogamy, to polygyny, to promiscuity, many have litters of underdeveloped, altricial young, while others are precocial at birth. The rodent fossil record back to the Paleocene on the supercontinent of Laurasia. Rodents greatly diversified in the Eocene, as spread across continents. Rodents reached both South America and Madagascar from Africa, and were the only placental mammals to reach. Rodents have been used as food, for clothing, as pets, some species, in particular the brown rat, the black rat, and the house mouse, are serious pests, eating and spoiling food stored by humans, and spreading diseases. The distinguishing feature of the rodents is their pairs of continuously growing and these incisors have thick layers of enamel on the front and little enamel on the back. Because they do not stop growing, the animal must continue to wear them down so that they do not reach and pierce the skull. As the incisors grind against each other, the softer dentine on the rear of the teeth wears away, most species have up to 22 teeth with no canines or anterior premolars. A gap, or diastema, occurs between the incisors and the teeth in most species. This allows rodents to suck in their cheeks or lips to shield their mouth and throat from wood shavings and other inedible material, chinchillas and guinea pigs have a high-fiber diet, their molars have no roots and grow continuously like their incisors
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Antelope
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An antelope is a member of a number of even-toed ungulate species indigenous to various regions in Africa and Eurasia. Antelopes comprise a wastebasket taxon within the family Bovidae, encompassing those Old World species that are not cattle, sheep, buffalo, bison, a group of antelope is called a herd. It perhaps derives from Greek anthos and ops, perhaps meaning beautiful eye or alluding to the animals long eyelashes and this, however, may be a later folk etymology. The word talopus and calopus, from Latin, came to be used in heraldry, in 1607, it was first used for living, cervine animals. The 91 species, most of which are native to Africa, the classification of tribes or subfamilies within Bovidae is still a matter of debate, with several alternative systems proposed. Antelope are not a cladistic or taxonomically defined group, the term is used to describe all members of the family Bovidae that do not fall under the category of sheep, cattle, or goats. Usually, all species of the Alcelaphinae, Antilopinae, Hippotraginae, Reduncinae, Cephalophinae, many Bovinae, the grey rhebok, and the impala are called antelopes. No antelope species is native to Australasia or Antarctica, nor do any extant species occur in the Americas, North America is currently home to the native pronghorn, which taxonomists do not consider a member of the antelope group, but which is locally referred to as such. More species of antelope are native to Africa than to any other continent, almost exclusively in savannahs, other species occur in Asia, the Arabian Peninsula is home to the Arabian oryx and Dorcas gazelle. India is home to the nilgai, chinkara, blackbuck, Tibetan antelope, and four-horned antelope, while Russia and Central Asia have the Tibetan antelope, many species of antelopes have been imported to other parts of the world, especially the United States, for exotic game hunting. With some species possessing spectacular leaping and evasive skills, individuals may escape, Texas in particular has many game ranches, as well as habitats and climates, that are very hospitable to African and Asian plains antelope species. Accordingly, wild populations of antelope, gemsbok, and nilgai may be found in Texas. Antelope live in a range of habitats. Numerically, most live in the African savannahs, species living in forests, woodland, or bush tend to be sedentary, but many of the plains species undertake long migrations. These enable grass-eating species to follow the rains and thereby their food supply, the gnus and gazelles of East Africa perform some of the most impressive mass migratory circuits of all mammals. For example, a male common eland can measure 178 cm at the shoulder and weigh almost 950 kg, whereas an adult royal antelope may stand only 24 cm at the shoulder and weigh a mere 1.5 kg. Not surprisingly for animals with long, slender yet powerful legs, many antelopes have long strides, some are also adapted to inhabiting rock koppies and crags. Both dibatags and gerenuks habitually stand on their two legs to reach acacia and other tree foliage
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Gazelle
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A gazelle is any of many antelope species in the genus Gazella or formerly considered to belong to it. Six species are included in two genera, Eudorcas and Nanger, which were formerly considered subgenera, the genus Procapra has also been considered a subgenus of Gazella, and its members are also referred to as gazelles, though they are not dealt with in this article. Gazelles are known as swift animals, some are able to run at bursts as high as 100 km/h or run at a sustained speed of 50 km/h. Gazelles are found mostly in the deserts, grasslands, and savannas of Africa, but they are found in southwest and central Asia. They tend to live in herds, and eat coarse, easily digestible plants. Gazelles are rather small antelopes, most standing 60–110 cm high at the shoulder, the gazelle genera are Gazella, Eudorcas, and Nanger. The taxonomy of these genera is a one, and the classification of species and subspecies has been an unsettled issue. Currently, the genus Gazella is widely considered to contain about 10 species, four further species are extinct, the red gazelle, the Arabian gazelle, the Queen of Shebas gazelle, and the Saudi gazelle. Most surviving gazelle species are considered threatened to varying degrees, closely related to the true gazelles are the Tibetan and Mongolian gazelles, the blackbuck of Asia, and the African springbok. One widely familiar gazelle is the African species Thomsons gazelle, which is around 60 to 80 cm in height at the shoulder and is coloured brown, the males have long, often curved, horns. Like many other species, Tommies and springboks exhibit a distinctive behaviour of stotting when they are threatened by predators. Gazelle is derived from the Arabic name غزال ġazāl, the first Romance language to adopt it was Middle French, and the word entered the English language around 1600 from French. The Arab people traditionally hunted the gazelle, appreciated for its grace, it is a symbol most commonly associated in Arabic literature with female beauty. It is related that the Caliph Abd al-Malik freed a gazelle that he had captured because of her resemblance to his beloved, O likeness of Layla, for I am your friend, today, O wild deer. Then I say, after freeing her from her fetters, You are free for the sake of Layla, the theme is found in the ancient Hebrew Song of Songs. Come away, my beloved, and be like a gazelle or like a stag on the spice-laden mountains. The gazelles are divided into three genera and numerous species, † = extinct Fossils of genus Gazella are found in Pliocene and Pleistocene deposits of Eurasia and Africa. The tiny Gazella borbonica is one of the earliest European gazelles, characterized by its small size, gazelles disappeared from Europe at the start of Ice Age, but they survived in Africa and Middle East
47.
Jerboa
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The jerboa forms the bulk of the membership of the family Dipodidae. Jerboas are hopping desert rodents found throughout Northern Africa and Asia east to northern China and they tend to live in hot deserts. When chased, jerboas can run at up to 24 kilometres per hour, some species are preyed on by little owls in central Asia. Most species of jerboa have excellent hearing that they use to avoid becoming the prey of nocturnal predators, the typical lifespan of a jerboa is around six years. Jerboas look somewhat like kangaroos, as they have many similarities, both have long hind legs, very short forelegs and long tails. Jerboas move around their environment the same way a kangaroo does, like other bipedal animals, their foramen magnum—the hole at the base of the skull—is forward-shifted, which enhances two legged locomotion. The tail of a jerboa can be longer than its head and body, jerboas use their tail to balance when hopping, and as a prop when sitting upright. Jerboa fur is fine, and usually the colour of sand and this colour usually matches the environment the jerboa lives in. Some species of the family have long ears like a rabbit. During the heat of the day they shelter in burrows, at night they leave the burrows due to the cooler temperature of their environment. They dig the entrances to their burrow near plant life, especially along field borders, during the rainy season they make tunnels in mounds or hills to reduce the risk of flooding. In the summer, jerboas occupying holes plug the entrance to keep out hot air and, some researchers speculate, in most cases burrows have an emergency exit that ends just below the surface or opens at the surface but is not strongly obstructed. This allows the jerboa to quickly escape predators, related jerboas often create four types of burrows. A temporary, summer day burrow is used for cover while hunting during the daylight and they have a second, temporary burrow used for hunting at night. They also have two permanent burrows, one for summer and one for winter, the permanent summer burrow is actively used throughout the summer and the young are raised there. Jerboas hibernate during the winter and use the permanent winter burrow for this, temporary burrows are shorter in length than permanent burrows. Once they reach adulthood, they usually have their own burrow, however, occasional loose colonies may form, whereby some species of jerboa dig communal burrows that offer extra warmth when it is cold outside. Some species eat beetles and other insects they come across, unlike gerbils, jerboas are not known to store food
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Desertification
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Desertification is a type of land degradation in which relatively dry area of land becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife. It is caused by a variety of factors, such as climate change. Desertification is a significant global ecological and environmental problem, considerable controversy exists over the proper definition of the term desertification for which Helmut Geist has identified more than 100 formal definitions. Another major contribution to the controversy comes from the sub-grouping of types of desertification, the worlds most noted deserts have been formed by natural processes interacting over long intervals of time. During most of times, deserts have grown and shrunk independent of human activities. Paleodeserts are large sand seas now inactive because they are stabilized by vegetation, some extending beyond the present margins of deserts, such as the Sahara. Drylands occupy approximately 40–41% of Earth’s land area and are home to more than 2 billion people. As of 1998, the then-current degree of expansion of the Sahara was not well known, due to a lack of recent. Causes of desertification in Sahel, The impact of global warming, in this area, the level of desertification is very high compared to other areas in the world. All areas situated in the part of Africa are characterized by a dry climate, hot temperatures. So, droughts are the rule in the Sahel region, development of the desertification process in Sahel, Some studies have shown that Africa has lost approximately 650000 km² of its productive agricultural land over the past 50 years. The propagation of desertification in this area is considerable, Some statistics have shown that since 1900, the Sahara has expanded by 250 km, covering an additional area of 6000 square kilometers. Impacts of desertification in Sahel, The survey, done by the institute for development, had demonstrated that this dryness is spreading fast in the Sahelian countries. Desertification in the Sahel can affect more than one billion of its inhabitants, 70% of the arid area has deteriorated and water resources have disappeared, leading to soil degradation. The loss of topsoil means that plants take root firmly. The United Nations Convention says that six million Sahelian citizens would have to give up the desertified zones of sub-Saharan Africa for North Africa. As the desertification takes place, the landscape may progress through different stages, on gradually sloped terrain, desertification can create increasingly larger empty spaces over a large strip of land, a phenomenon known as Brousse tigrée. A mathematical model of this phenomenon proposed by C, klausmeier attributes this patterning to dynamics in plant-water interaction
