Rivers. By: Mohamed Badr. Fresh water ecosystem;. River is considered as a Fresh Water Ecosystem . A fresh water ecosystem: Is defined as an area which has a low salt concentration – usually less than 1%. I ncludes; Lake , ponds, RIVERS, springs, streams and wet land.
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By: Mohamed Badr
a body of water that moves in one direction.
Warmer, wider, slower and decrease in oxygen.
They anchor themselves to rocks by using root like structures called rhizoids.
They don’t live in headwaters because the current is too strong for them to float due to their size
Downstream, they can float in the warmer, calmer water
They are adapted to cold, oxygen rich headwaters.
They are powerful swimmers and have streamlined bodies that present little resistance to strong current
Such as catfish and carp prefers to live in calmer waters.
Like the crowfoot, set roots down in the river’s rich sediment.
Like the arrowhead will vary in shape according to the strength of a river’s current
They discharge the waste directly into the river.
And fish became inedible and full of disease.