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The limnetic zone is the most photosynthetically-active zone of a lake since it is the primary habitat for planktonic species. [5] Because phytoplankton populations are densest here, it is the zone most heavily responsible for oxygen production within the aquatic ecosystem .
The off shore areas may be called the pelagic zone, the photic zone may be called the limnetic zone and the aphotic zone may be called the profundal zone. Inland from the littoral zone, one can also frequently identify a riparian zone which has plants still affected by the presence of the lake—this can include effects from windfalls, spring ...
The term limnology was coined by François-Alphonse Forel (1841–1912) who established the field with his studies of Lake Geneva.Interest in the discipline rapidly expanded, and in 1922 August Thienemann (a German zoologist) and Einar Naumann (a Swedish botanist) co-founded the International Society of Limnology (SIL, from Societas Internationalis Limnologiae).
Lake zones Littoral zone Limnetic zone ... A dimictic lake is a body of freshwater whose difference in temperature between surface and bottom layers becomes ...
Natural lakes are generally found in mountainous areas (i.e. alpine lakes), dormant volcanic craters, rift zones and areas with ongoing glaciation. Other lakes are found in depressed landforms or along the courses of mature rivers, where a river channel has widened over a basin formed by eroded floodplains and wetlands.
Due to the low productivity of the profundal zone, organisms rely on detritus sinking from the photic zone. [1] Species richness in the profundal zone is often similar to that in the limnetic zone. [5] Microbial levels in the profundal benthos are higher than those in the littoral benthos, potentially due to a smaller average sediment particle ...
A salt lake, also known as a saline lake or brine lake, is an inland body of water situated in an arid or semiarid region, with no outlet to the sea, containing a high concentration of dissolved neutral salts (principally sodium chloride). Examples include the Great Salt Lake in Utah, and the Dead Sea in southwestern Asia. [36] [52]
Lake zones Littoral zone Limnetic zone Profundal zone Benthic zone: Lake stratification Epilimnion Metalimnion Hypolimnion Destratification: Lake types Holomictic lake Monomictic lake Dimictic lake Polymictic lake Meromictic lake Amictic lake: See also; Aquatic ecosystems; Wild fisheries