What is the littoral zone of a lake?

The shallow down-sloping shelf of a lake or pond is commonly referred to as the lake's “littoral zone”. The zone is an area where the water meets the land. Plants here support wildlife such as wading birds, turtles and crabs. Littoral Zones are crucial components of healthy ecosystems, hence are protected by law.



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Summary. English: The three primary zones of a lake are the littoral, open-water (also called the photic or limnetic), and deep-water (also called the aphotic or profundal) zones. If the above link no longer works, visit http://www.ck12.org and search for CK-12 Earth Science.

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The profundal zone is a deep zone of an inland body of freestanding water, such as a lake or pond, located below the range of effective light penetration.

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So, the four zones of a lake are: the nearshore or littoral zone, open water or limnetic zone, deep water or profundal zone, the benthic zone or lake floor. The different conditions, such as the amount of light, food, and oxygen in each of the lake zones, affect what kind of organisms live there.

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Situated in south-east Siberia, the 3.15-million-ha Lake Baikal is the oldest (25 million years) and deepest (1,700 m) lake in the world. It contains 20% of the world's total unfrozen freshwater reserve.

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Lake Baikal, in Siberia, holds the distinction of being both the deepest lake in the world and the largest freshwater lake, holding more than 20% of the unfrozen fresh water on the surface of Earth. It is also the oldest freshwater lake in the world, with an estimated age of 20 million to 25 million years.

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