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Index >> Microbial Ecology of Different Ecosystems>> Freshwater Ecosystem

Freshwater Ecosystem

Freshwater Ecosystem
The study of freshwater habitats is called limnology. Fresh water environments include the flowing waters (lotic environment) and standing bodies of water (lentic environment). The dominant feature of lotic environments, is the continuous movement of water and currents, which cuts the channel, moulds the character of the stream and influences the chemical and organic composition of the water.

Water running off the land follows courses of least resistance and develops these as distinct channels by erosion. Young or rejuvenated streams, with a high velocity, erode more than they deposit.

Water in slow-moving rivers reflects the characteristic of the terrain; nutrient level and sediment load vary according to region. The slow-moving stream often develops floodplains, meanders, and associated features and terminates in a lake or estuary.

The lentic and lotic ecosystems are fundamentally different from one another because of differences in energy input and flow, and mineral input and circulation.

 

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