Eutrophication

Question 1

What is eutrophication

Answer 1

Is the ecosystem response to the addition of inorganic natural substances such as nitrates and phosphates to an aquatic system.

Question 2

Types of eutrophication

Answer 2

Eutrophication is a natural process
Addition of excess inputs of nutrients and inorganic wastes accelerate the process
There is Natural and cultural eutrophication

Question 3

Natural eutrophication is

Answer 3

Process that occurs as an aquatic system ages over a period of hundreds or thousands of year.
Sources: ground water inputs, surface runoff.

Question 4

Cultural eutrophication is

Answer 4

Process that occurs when humans release excessive amounts of inorganic nutrients and shorten the rate of aging by decades
Sources: river inputs influenced by agriculture, effluent from septic tanks, and sewage from waste water

Question 5

Explain what happens During eutrophication physio chemical conditions and species composition of an aquatic community changes

Answer 5

Excessive amounts of inorganic nutrients enter system.

High production of planktonic organisms.
Increased activity of microbes.

Increase in accumulation of OM.
Bacteria breaking down OM need DO.
Leads to reduced DO concentration.

Aquatic organisms are starved of light & DO.
Loss of invertebrates.
Loss of cold water fish species.
Increase in Tubificid worms, midge larvae.

Cyprinid fishes increase.
Zooplankton population decrease

Bottom waters become anoxia.
Unpleasant taste & odors.