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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Dead zone (ecology)
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Dead zones are hypoxic areas in the world's oceans and large lakes. Hypoxia occurs when dissolved oxygen concentration falls to or below 2 mg of O2/liter. When a body of water experiences hypoxic cond
Red circles show the location and size of many dead zones (in 2008). Black dots show dead zones of unknown size. The size and number of marine dead zo
Red circles show the location and size of many dead zones (in 2008). Black dots show dead zones of unknown size. The size and number of marine dead zones—areas where the deep water is so low in dissolved oxygen that sea creatures cannot survive (except for some specialized bacteria)—have grown in the past half-century.
Dead zones are often caused by the decay of algae during algal blooms, like this one off the coast of La Jolla, San Diego, California.
Dead zones are often caused by the decay of algae during algal blooms, like this one off the coast of La Jolla, San Diego, California.
Climate has a significant impact on the growth and decline of ecological dead zones. During spring months, as rainfall increases, more nutrient-rich w
Climate has a significant impact on the growth and decline of ecological dead zones. During spring months, as rainfall increases, more nutrient-rich water flows down the mouth of the Mississippi River. At the same time, as sunlight increases during the spring, algal growth in the dead zones increases dramatically. In fall months, tropical storms begin to enter the Gulf of Mexico and break up the dead zones, and the cycle repeats again in the spring.
Underwater video frame of the sea floor in the western Baltic covered with dead or dying crabs, fish and clams killed by oxygen depletion
Underwater video frame of the sea floor in the western Baltic covered with dead or dying crabs, fish and clams killed by oxygen depletion
Gulf of Mexico
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The Gulf of Mexico is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coa
Dead zone (ecology)
…of dead zones. These occur near inhabited coastlines, where aquatic life is most concentrated. Coastal regions, such as the Baltic Sea, the northern Gulf of Mexico, and the Chesapeake Bay, as well as large enclosed water bodies like Lake Erie, have been affected by deoxygenation due to eutrophication. Excess…
The Harbor at Galveston, by Verner Moore White (1863–1923)
The Harbor at Galveston, by Verner Moore White (1863–1923)
Ship and oil rigs in the gulf (2002)
Ship and oil rigs in the gulf (2002)
Cantarell Field (2015)
Cantarell Field (2015)
Sediment-laden water pours into the northern Gulf of Mexico from the Atchafalaya River (2009)
Sediment-laden water pours into the northern Gulf of Mexico from the Atchafalaya River (2009)