Pinus contorta, with the common names lodgepole pine and shore pine, known as twisted pine, contorta pine, is a common tree in western North America. It is common near the ocean shore and in dry montane forests to the subalpine, but is rare in lowland rain forests. Like all pines, it is an evergreen conifer. There are four subspecies of Pinus contorta, one of them is sometimes considered to have two varieties; the subspecies are sometimes treated at the rank of variety. Pinus contorta subsp. Bolanderi: Bolander's beach pine, Bolander pine. Contorta: shore pine. Pinus contorta subsp. Murrayana: tamarack pine, or Sierra lodgepole pine. Pinus contorta subsp. Latifolia: lodgepole pine. Depending on subspecies, Pinus contorta grows as tree; the shrub form is krummholz and is 1 to 3 m high. The thin and narrow-crowned tree is 40 to 50 m high and can achieve up to 2 m in diameter at chest height; the murrayana subspecies is the tallest. The crown is rounded and the top of the tree is flattened. In dense forests, the tree has a conical crown.
The formation of twin trees is common in some populations in British Columbia. The elastic branches are difficult to break; the branches are covered with short shoots. The species name is contorta because of the twisted, bent pines found at coastal areas and the tree's twisted needles. Pinus contorta is known under several English names: black pine, scrub pine, coast pine. P. contorta subsp. Latifolia will hybridise with the related jack pine; the egg-shaped growth buds are between 20 and 30 mm long. They are short pointed rotated, resinous. Spring growth starts in beginning of April and the annual growth is completed by early July; the dark and shiny needles are pointed and 4 to 8 cm long and 0.9 to 2 mm wide. The needle edge is weak to serrated; the needles rotated about the shoots' longitudinal axes. In Alberta above 2,000 m, 1 to 5 needles occur per short shoot. A population with a high proportion of three-needled short shoots occurs in the Yukon. Needles live an average of four to six years, with a maximum of 13 years.
The cones are 3–7 centimetres long. The cones have prickles on the scales. Many populations of the Rocky Mountain subspecies, P. contorta subsp. Latifolia, have serotinous cones; this means that the cones are closed and must be exposed to high temperatures, such as from forest fires, in order to open and release their seeds. The variation in their serotiny has been correlated with mountain pine beetle attacks; the cones of the coastal Pacific subspecies, P. contorta subsp. Contorta, are non-serotinous, those of the inland Pacific subspecies, P. contorta subsp. Murrayana, are non-serotinous. Pinus contorta is a fire-dependent species, requiring wildfires to maintain healthy populations of diverse ages; the bark of the lodgepole pine is thin, minimizing the tree's defense to fire. This allows the species to maintain its place in the forest habitat. One plant community in which Pinus contorta is found is the closed-cone pine forest of coastal California. Excessive wildfire prevention disrupts the fire ecology.
The stands are so densely populated that the trees self-thin, or out-compete each other, leaving dead trees standing. These become a dry ladder fuel; when the fire reaches the crowns of the trees, it can jump from tree to tree and becomes unstoppable. The natural fire regime for this species is driven by climate; the fires occur most after years of drought. Pinus contorta occurs from the upper montane to the subalpine region; these types of forests experience a lot of moisture in the form of snow in the winter due to their altitude. The density of the tree stand prohibits the establishment of an understory. With all of that being said, the likelihood of a surface fire occurring is rare. Thus, infrequent but severe fires dominate this species. An example of the climate that plays a huge role in the fire regime of Pinus contorta is quite complex. There are three different oscillations; these are Atlantic Multi-decadal Oscillation and El Nino. A combination of these oscillations being in effect or not in effect have a global effect on the water available to these forests.
So when the AMO +, ENSO – and PDO –, there is going to be a drought and a severe subalpine fire. Suillus tomentosus, a fungus, produces specialized structures called tuberculate ectomycorrhizae with the roots of lodgepole pine; these structures have been shown to be the location of concentrations of nitrogen-fixing bacteria which contribute a significant amount of nitrogen to tree growth and allow the pines to colonize nutrient-poor sites. This species is attacked by blue stain fungus, distributed
Atmospheric pressure, sometimes called barometric pressure, is the pressure within the atmosphere of Earth. The standard atmosphere is a unit of pressure defined as 1013.25 mbar, equivalent to 760 mmHg, 29.9212 inches Hg, or 14.696 psi. The atm unit is equivalent to the mean sea-level atmospheric pressure on Earth, that is, the Earth's atmospheric pressure at sea level is 1 atm. In most circumstances atmospheric pressure is approximated by the hydrostatic pressure caused by the weight of air above the measurement point; as elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. Pressure measures force per unit area, with SI units of Pascals. On average, a column of air with a cross-sectional area of 1 square centimetre, measured from mean sea level to the top of Earth's atmosphere, has a mass of about 1.03 kilogram and exerts a force or "weight" of about 10.1 newtons or 2.37 lbf, resulting in a pressure at sea level of about 10.1 N/cm2 or 101 kN/m2.
A column of air with a cross-sectional area of 1 in2 would have a mass of about 6.65 kg and a weight of about 65.4 N or 14.7 lbf, resulting in a pressure of 10.1 N/cm2 or 14.7 lbf/in2. Atmospheric pressure is caused by the gravitational attraction of the planet on the atmospheric gases above the surface, is a function of the mass of the planet, the radius of the surface, the amount and composition of the gases and their vertical distribution in the atmosphere, it is modified by the planetary rotation and local effects such as wind velocity, density variations due to temperature and variations in composition. The mean sea-level pressure is the average atmospheric pressure at mean sea level; this is the atmospheric pressure given in weather reports on radio and newspapers or on the Internet. When barometers in the home are set to match the local weather reports, they measure pressure adjusted to sea level, not the actual local atmospheric pressure; the altimeter setting in aviation is an atmospheric pressure adjustment.
Average sea-level pressure is 1013.25 mbar. In aviation, weather reports, QNH is transmitted around the world in millibars or hectopascals, except in the United States and Colombia where it is reported in inches of mercury; the United States and Canada report sea-level pressure SLP, adjusted to sea level by a different method, in the remarks section, not in the internationally transmitted part of the code, in hectopascals or millibars. However, in Canada's public weather reports, sea level pressure is instead reported in kilopascals. In the US weather code remarks, three digits are all; the highest sea-level pressure on Earth occurs in Siberia, where the Siberian High attains a sea-level pressure above 1050 mbar, with record highs close to 1085 mbar. The lowest measurable sea-level pressure is found at the centers of tropical cyclones and tornadoes, with a record low of 870 mbar. Surface pressure is the atmospheric pressure at a location on Earth's surface, it is directly proportional to the mass of air over that location.
For numerical reasons, atmospheric models such as general circulation models predict the nondimensional logarithm of surface pressure. The average value of surface pressure on Earth is 985 hPa; this is in contrast to mean sea-level pressure, which involves the extrapolation of pressure to sea-level for locations above or below sea-level. The average pressure at mean sea-level in the International Standard Atmosphere is 1013.25 hPa, or 1 atmosphere, or 29.92 inches of mercury. Pressure and the acceleration due to gravity, are related by P = F/A = /A, where A is surface area. Atmospheric pressure is thus proportional to the weight per unit area of the atmospheric mass above that location. Pressure on Earth varies with the altitude of the surface. Pressure varies smoothly from the Earth's surface to the top of the mesosphere. Although the pressure changes with the weather, NASA has averaged the conditions for all parts of the earth year-round; as altitude increases, atmospheric pressure decreases.
One can calculate the atmospheric pressure at a given altitude. Temperature and humidity affect the atmospheric pressure, it is necessary to know these to compute an accurate figure; the graph at right was developed for a temperature of 15 °C and a relative humidity of 0%. At low altitudes above sea level, the pressure decreases by about 1.2 kPa for every 100 metres. For higher altitudes within the troposphere, the following equation relates atmospheric pressure p to altitude h p = p 0 ⋅ g ⋅ M R 0 ⋅
State parks are parks or other protected areas managed at the sub-national level within those nations which use "state" as a political subdivision. State parks are established by a state to preserve a location on account of its natural beauty, historic interest, or recreational potential. There are state parks under the administration of the government of each U. S. state, some of the Mexican states, in Brazil. The term is used in the Australian state of Victoria; the equivalent term used in Canada, South Africa and Belgium, is provincial park. Similar systems of local government maintained parks exist in other countries, but the terminology varies. State parks are thus similar under state rather than federal administration. Local government entities below state level may maintain parks, e.g. regional parks or county parks. In general, state parks are smaller than national parks, with a few exceptions such as the Adirondack Park in New York and Anza-Borrego Desert State Park in California; as of 2014, there were 10,234 state park units in the United States, according to the National Association of State Park Directors.
There are some 739 million annual visits to the country's state parks. The NASPD further counts over 43,000 miles of trail, 217,367 campsites, 8,277 cabins and lodges across U. S. state parks. The largest state park system in the United States is Alaska State Parks, with over 100 sites encompassing 3.3 million acres. Many states include designations beyond "state park" in their state parks systems. Other designations might be state recreation areas, state beaches, state nature reserves; some state park systems include historic sites. The title of oldest state park in the United States is claimed by Niagara Falls State Park in New York, established in 1885; however several public parks or maintained at the state level pre-date it. Indian Springs State Park has been operated continuously by the state of Georgia as a public park since 1825, although it did not gain the title "State Park" until 1931. In 1864 Yosemite Valley and Mariposa Grove were ceded by the federal government to California until Yosemite National Park was proclaimed in 1890.
In 1878 Wisconsin set aside a vast swath of its northern forests as "The State Park" but, needing money, sold most of it to lumber companies within 20 years. The first state park with the designation of "state park" was Mackinac Island State Park in 1895, first a national park before being transferred to the state of Michigan. Many state park systems date to the 1930s, when around 800 state parks across the country were developed with assistance from federal job creation programs like the Civilian Conservation Corps and Works Progress Administration. List of U. S. state parks Wilderness preservation systems in Carol. "The Civilian Conservation Corps and Wisconsin State Park Development." Wisconsin Magazine of History: 184-204. In JSTOR Landrum, Ney C; the State Park Movement in America: A Critical Review excerpt and text search Larson, Zeb. "Silver Falls State Park and the Early Environmental Movement." Oregon Historical Quarterly 112#1 pp: 34-57 in JSTOR Newton, Norman T. "The State Park Movement: 1864-1933.
"When Forests Trumped Parks: The Maryland Experience, 1906-1950." Maryland Historical Magazine 101#2 pp: 203-224
The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west and the Americas in the east. At 165,250,000 square kilometers in area, this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about one-third of its total surface area, making it larger than all of Earth's land area combined; the centers of both the Water Hemisphere and the Western Hemisphere are in the Pacific Ocean. The equator subdivides it into the North Pacific Ocean and South Pacific Ocean, with two exceptions: the Galápagos and Gilbert Islands, while straddling the equator, are deemed wholly within the South Pacific, its mean depth is 4,000 meters. The Mariana Trench in the western North Pacific is the deepest point in the world, reaching a depth of 10,911 meters; the western Pacific has many peripheral seas. Though the peoples of Asia and Oceania have traveled the Pacific Ocean since prehistoric times, the eastern Pacific was first sighted by Europeans in the early 16th century when Spanish explorer Vasco Núñez de Balboa crossed the Isthmus of Panama in 1513 and discovered the great "southern sea" which he named Mar del Sur.
The ocean's current name was coined by Portuguese explorer Ferdinand Magellan during the Spanish circumnavigation of the world in 1521, as he encountered favorable winds on reaching the ocean. He called it Mar Pacífico, which in both Portuguese and Spanish means "peaceful sea". Important human migrations occurred in the Pacific in prehistoric times. About 3000 BC, the Austronesian peoples on the island of Taiwan mastered the art of long-distance canoe travel and spread themselves and their languages south to the Philippines and maritime Southeast Asia. Long-distance trade developed all along the coast from Mozambique to Japan. Trade, therefore knowledge, extended to the Indonesian islands but not Australia. By at least 878 when there was a significant Islamic settlement in Canton much of this trade was controlled by Arabs or Muslims. In 219 BC Xu Fu sailed out into the Pacific searching for the elixir of immortality. From 1404 to 1433 Zheng He led expeditions into the Indian Ocean; the first contact of European navigators with the western edge of the Pacific Ocean was made by the Portuguese expeditions of António de Abreu and Francisco Serrão, via the Lesser Sunda Islands, to the Maluku Islands, in 1512, with Jorge Álvares's expedition to southern China in 1513, both ordered by Afonso de Albuquerque from Malacca.
The east side of the ocean was discovered by Spanish explorer Vasco Núñez de Balboa in 1513 after his expedition crossed the Isthmus of Panama and reached a new ocean. He named it Mar del Sur because the ocean was to the south of the coast of the isthmus where he first observed the Pacific. In 1519, Portuguese explorer Ferdinand Magellan sailed the Pacific East to West on a Spanish expedition to the Spice Islands that would result in the first world circumnavigation. Magellan called the ocean Pacífico because, after sailing through the stormy seas off Cape Horn, the expedition found calm waters; the ocean was called the Sea of Magellan in his honor until the eighteenth century. Although Magellan himself died in the Philippines in 1521, Spanish Basque navigator Juan Sebastián Elcano led the remains of the expedition back to Spain across the Indian Ocean and round the Cape of Good Hope, completing the first world circumnavigation in a single expedition in 1522. Sailing around and east of the Moluccas, between 1525 and 1527, Portuguese expeditions discovered the Caroline Islands, the Aru Islands, Papua New Guinea.
In 1542–43 the Portuguese reached Japan. In 1564, five Spanish ships carrying 379 explorers crossed the ocean from Mexico led by Miguel López de Legazpi, sailed to the Philippines and Mariana Islands. For the remainder of the 16th century, Spanish influence was paramount, with ships sailing from Mexico and Peru across the Pacific Ocean to the Philippines via Guam, establishing the Spanish East Indies; the Manila galleons operated for two and a half centuries, linking Manila and Acapulco, in one of the longest trade routes in history. Spanish expeditions discovered Tuvalu, the Marquesas, the Cook Islands, the Solomon Islands, the Admiralty Islands in the South Pacific. In the quest for Terra Australis, Spanish explorations in the 17th century, such as the expedition led by the Portuguese navigator Pedro Fernandes de Queirós, discovered the Pitcairn and Vanuatu archipelagos, sailed the Torres Strait between Australia and New Guinea, named after navigator Luís Vaz de Torres. Dutch explorers, sailing around southern Africa engaged in discovery and trade.
In the 16th and 17th centuries Spain considered the Pacific Ocean a mare clausum—a sea closed to other naval powers. As the only known entrance from the Atlantic, the Strait of Magellan was at times patrolled by fleets sent to prevent entrance of non-Spanish ships. On the western side of the Pacific Ocean the Dutch threatened the Spanish Philippines; the 18th cen
The Pacific Northwest, sometimes referred to as Cascadia, is a geographic region in western North America bounded by the Pacific Ocean to the west and by the Cascade Mountain Range on the east. Though no official boundary exists, the most common conception includes the Canadian province of British Columbia and the U. S. states of Idaho and Washington. Broader conceptions reach north into Southeast Alaska and Yukon, south into northern California, east to the Continental Divide to include Western Montana and parts of Wyoming. Narrower conceptions may be limited to the coastal areas west of the Coast mountains; the variety of definitions can be attributed to overlapping commonalities of the region's history, geography and other factors. The Northwest Coast is the coastal region of the Pacific Northwest, the Northwest Plateau is the inland region; the term "Pacific Northwest" should not be confused with the Northwest Territory or the Northwest Territories of Canada. The region's largest metropolitan areas are Greater Seattle, with 3.8 million people.
A key aspect of the Pacific Northwest is the US–Canada international border, which the United States and the United Kingdom established at a time when the region's inhabitants were composed of indigenous peoples. The border—in two sections, along the 49th parallel south of British Columbia and the Alaska Panhandle west of northern British Columbia—has had a powerful effect on the region. According to Canadian historian Ken Coates, the border has not influenced the Pacific Northwest—rather, "the region's history and character have been determined by the boundary". Definitions of the Pacific Northwest region vary, Pacific Northwesterners do not agree on the exact boundary; the most common conception includes the U. S. states of Idaho and Washington and the Canadian province of British Columbia. Broader definitions of the region have included the U. S. states of Alaska and parts of the states of California and Wyoming, the Canadian territory of the Yukon. Definitions based on the historic Oregon Country reach east to the Continental Divide, thus including all of Idaho and parts of western Montana and western Wyoming.
Sometimes, the Pacific Northwest is defined as being the Northwestern United States excluding Canada. Note that these types of definitions are made by government agencies whose scope is limited to the United States; the Pacific Northwest has been occupied by a diverse array of indigenous peoples for millennia. The Pacific Coast is seen by some scholars as a major coastal migration route in the settlement of the Americas by late Pleistocene peoples moving from northeast Asia into the Americas; the coastal migration hypothesis has been bolstered by findings such as the report that the sediments in the Port Eliza Cave on Vancouver Island indicate the possibility of survivable climate as far back as 16 kya in the area, while the continental ice sheets were nearing their maximum extent. Other evidence for human occupation dating back as much as 14.5 kya is emerging from Paisley Caves in south-central Oregon. However, despite such research, the coastal migration hypothesis is still subject to considerable debate.
Due in part to the richness of Pacific Northwest Coast and river fisheries, some of the indigenous peoples developed complex sedentary societies, while remaining hunter-gatherers. The Pacific Northwest Coast is one of the few places where politically complex hunter-gatherers evolved and survived to historic contacts, therefore has been vital for anthropologists and archaeologists seeking to understand how complex hunter and gatherer societies function; when Europeans first arrived on the Northwest Coast, they found one of the world's most complex hunting and fishing societies, with large sedentary villages, large houses, systems of social rank and prestige, extensive trade networks, many other factors more associated with societies based on domesticated agriculture. In the interior of the Pacific Northwest, the indigenous peoples, at the time of European contact, had a diversity of cultures and societies; some areas were home to egalitarian societies. Others along major rivers such as the Columbia and Fraser, had complex, sedentary societies rivaling those of the coast.
In British Columbia and Southeast Alaska, the Tlingit and Haida erected large and elaborately carved totem poles that have become iconic of Pacific Northwest artistic traditions. Throughout the Pacific Northwest, thousands of indigenous people live, some continue to practice their rich cultural traditions, "organizing their societies around cedar and salmon". In 1579 the British captain and erstwhile privateer Francis Drake sailed up the west coast of North America as far as Oregon before returning south to land and make ship repairs. At this landing site near present-day San Francisco, Drake made a symbolic claim of the region for England, naming it New Albion. Juan de Fuca, a Greek captain sailing for the Crown of Spain found the Strait of Juan de Fuca around 1592; the strait was whether he discovered it or not has long been questioned. During the early 1740s, Imperial Russia sent the Dane Vitus Bering to the region. By the late 18th century and into the mid-19th century, Russian settlers had established several posts and communities on the northeast Pacific coast reaching a
Hiking is the preferred term, in Canada and the United States, for a long, vigorous walk on trails, in the countryside, while the word walking is used for shorter urban walks. On the other hand, in the United Kingdom, the Republic of Ireland, the word "walking" is acceptable to describe all forms of walking, whether it is a walk in the park or backpacking in the Alps; the word hiking is often used in the UK, along with rambling and fell walking. The term bushwalking is endemic to Australia, having been adopted by the Sydney Bush Walkers club in 1927. In New Zealand a long, vigorous walk or hike is called tramping, it is a popular activity with numerous hiking organizations worldwide, studies suggest that all forms of walking have health benefits. In the United States, the Republic of Ireland, United Kingdom, hiking means walking outdoors on a trail, or off trail, for recreational purposes. A day hike refers to a hike. However, in the United Kingdom, the word walking is used, as well as rambling, while walking in mountainous areas is called hillwalking.
In Northern England, Including the Lake District and Yorkshire Dales, fellwalking describes hill or mountain walks, as fell is the common word for both features there. Hiking is sometimes referred to as such; this refers to difficult walking through dense forest, undergrowth, or bushes, where forward progress requires pushing vegetation aside. In extreme cases of bushwhacking, where the vegetation is so dense that human passage is impeded, a machete is used to clear a pathway; the Australian term bushwalking refers to both on and off-trail hiking. Common terms for hiking used by New Zealanders are walking or bushwalking. Trekking is the preferred word used to describe multi-day hiking in the mountainous regions of India, Nepal, North America, South America and the highlands of East Africa. Hiking a long-distance trail from end-to-end is referred to as trekking and as thru-hiking in some places. In North America, multi-day hikes with camping, are referred to as backpacking; the idea of taking a walk in the countryside for pleasure developed in the 18th century, arose because of changing attitudes to the landscape and nature associated with the Romantic movement.
In earlier times walking indicated poverty and was associated with vagrancy. Thomas West, an English priest, popularized the idea of walking for pleasure in his guide to the Lake District of 1778. In the introduction he wrote that he aimed to encourage the taste of visiting the lakes by furnishing the traveller with a Guide. To this end he included various'stations' or viewpoints around the lakes, from which tourists would be encouraged to enjoy the views in terms of their aesthetic qualities. Published in 1778 the book was a major success. Another famous early exponent of walking for pleasure, was the English poet William Wordsworth. In 1790 he embarked on an extended tour of France and Germany, a journey subsequently recorded in his long autobiographical poem The Prelude, his famous poem Tintern Abbey was inspired by a visit to the Wye Valley made during a walking tour of Wales in 1798 with his sister Dorothy Wordsworth. Wordsworth's friend Coleridge was another keen walker and in the autumn of 1799, he and Wordsworth undertook a three weeks tour of the Lake District.
John Keats, who belonged to the next generation of Romantic poets began, in June 1818, a walking tour of Scotland and the Lake District with his friend Charles Armitage Brown. More and more people undertook walking tours through the 19th century, of which the most famous is Robert Louis Stevenson's journey through the Cévennes in France with a donkey, recorded in his Travels with a Donkey. Stevenson published in 1876 his famous essay "Walking Tours"; the subgenre of travel writing produced many classics in the subsequent 20th century. An early American example of a book that describes an extended walking tour is naturalist John Muir's A Thousand Mile Walk to the Gulf, a posthumous published account of a long botanizing walk, undertaken in 1867. Due to industrialisation in England, people began to migrate to the cities where living standards were cramped and unsanitary, they would escape the confines of the city by rambling about in the countryside. However, the land in England around the urban areas of Manchester and Sheffield, was owned and trespass was illegal.
Rambling clubs soon sprang up in the north and began politically campaigning for the legal'right to roam'. One of the first such clubs, was'Sunday Tramps' founded by Leslie White in 1879; the first national grouping, the Federation of Rambling Clubs, was formed in London in 1905 and was patronized by the peerage. Access to Mountains bills, that would have legislated the public's'right to roam' across some private land, were periodically presented to Parliament from 1884 to 1932 without success. In 1932, the Rambler’s Right Movement organized a mass trespass on Kinder Scout in Derbyshire. Despite attempts on the part of the police to prevent the trespass from going ahead it was achieved due to massive publicity; however the Mountain Access Bill, passed in 1939 was opposed by many walkers' organizations, including The Ramblers, who felt that it did not
Acer macrophyllum, the bigleaf maple or Oregon maple, is a large deciduous tree in the genus Acer. It can grow up to 157.80 feet tall, but more reaches 15–20 m tall. It is native to western North America near the Pacific coast, from southernmost Alaska to southern California; some stands are found inland in the foothills of the Sierra Nevada mountains of central California, a tiny population occurs in central Idaho. It has the largest leaves of any maple 15–30 cm across, with five incised palmate lobes, with the largest running to 61 centimetres. In the fall, the leaves turn to gold and yellow to spectacular effect against the backdrop of evergreen conifers; the flowers are produced in spring in pendulous racemes 10–15 cm long, greenish-yellow with inconspicuous petals. The fruit is a paired winged samara, each seed 1–1.5 centimetres in diameter with a 4–5-centimetre wing. In the more humid parts of its range, as in the Olympic National Park, its bark is covered with epiphytic moss and fern species.
Bigleaf maple can form pure stands on moist soils in proximity to streams, but are found within riparian hardwood forests or dispersed open canopies of conifers, mixed evergreens, or oaks In cool and moist temperate mixed woods they are one of the dominant species. It is rare north of Vancouver Island though cultivated in Prince Rupert, near Ketchikan and in Juneau. Bigleaf maple has been used for creating syrup but it is not common; this is. Syrup production has become a localized industry in bigleaf maple groves where weather conditions are suitable, such as near sea-level in British Columbia and at higher elevations along the West Coast from Washington through Northern California. Bigleaf maple is the only commercially important maple of the Pacific Coast region; the wood is used for applications as diverse as furniture, piano frames and salad bowls. Figured wood is not uncommon and is used for veneer, stringed instruments, guitar bodies, gun stocks; the wood is used in veneer production for furniture, but is used in musical instrument production, interior paneling, other hardwood products.
Lakwungen First Nations people of Vancouver Island call it the paddle tree and used it to make paddles and spindle wheels. In California, land managers do not value bigleaf maple, it is intentionally knocked over and left un-harvested during harvest of Douglas fir and redwood stands. Maple syrup has been made from the sap of bigleaf maple trees. While the sugar concentration is about the same as in Acer saccharum, the flavor is somewhat different. Interest in commercially producing syrup from bigleaf maple sap has been limited. Although not traditionally used for syrup production, it takes about 40 volumes of sap to produce 1 volume of maple syrup, it is used as browse by black-tailed deer, mule deer, horses during the sapling stage. A western Oregon study found that 60 percent of bigleaf maple seedlings over 10 inches tall had been browsed by deer, most several times; the current national champion bigleaf maple is located in Oregon. It has a circumference of 38.6 feet —or an average diameter at breast height of about 12.3 feet —and is 119 feet tall with a crown spread of 91 feet.
The previous national champion is located in Marion and has a circumference of 25.4 feet —or an average diameter at breast height of about 8.1 feet —and is 88 feet tall with a crown spread of 104 feet. Media related to Acer macrophyllum at Wikimedia Commons Calflora photo of herbarium specimen at Missouri Botanical Garden, collected in Yolo County, California, in 1903