Aquatic Ecosystem

The aquatic Ecosystems comprise of the marine environments of the seas and the fresh water systems in lakes,rivers,ponds and wetlands.These ecosystems provide human beings with a wealth of natural resources.They provide food like fish and crustaceans.Natural aquatic such as rivers and seas,break down the chemical and organic wastes created by man .Hoever,this function has limitations,as the aquatic ecosystem cannot handle grat quantities of waste .Beyond a certain limit ,pollution destroys this natural function.

If aquatic ecosytems are misused or over-uitlized ,thier ability to provide resources suffers in the long teem.over-fishing leads to fall in fish catch .River courses that are changed by dams to provide electricity affect thousands of people who do not get a continuous supply of water downstream for their daily use .when wetlands are drained ,their connected rivers tend to cause floods.wetlands are drained,their connected rivers tend to cause floods .These are all exemples of unsustainable changes in the use of natural resources and nature's ecosystems that are dependent onhydrological regimes.

water is an important factor in all our ecosysms.several ecosystems exist in fresh water and marine saltwater.There is very little fresh water on earth ,which fundamental resource for people all over the world.