What is eutrophication? What are it's consequences?

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Many of us have come across the term 'eutrophication' yet many do not know it's actual meaning and the consequences of it...
Well, eutrophication is usually characterised by excessive algal and plant growth due to increase in availability of nutrient fertilisers, sunlight, carbon dioxide and many other factors which are required for photosynthesis.
There are some conspicuous effects of eutrophication which many of you may be unaware of. One of it is the creation of dense blooms of foul - smelling phytoplankton that harms water quality, but yet is the food for many marine animals.
These blooms of algae also limit light penetration, reducing the growth of plants.
Furthermore, high rates of photosynthesis associated with eutrophication can deplete dissolved inorganic carbon dioxide and rise pH to extreme values during the day.
The rise in pH value can in turn make some organisms that mainly rely on perception of dissolved chemicals for their survival blind.
It poses a serious threat to potable drinking water sources, fisheries, etc.
Predicted climate change and increasing growth rate of population has the potential to further degrade water quality and quantity, and there's an immediate need by water resource managers to understand how to minimise the frequency and intensity of algal and cyanobacterial blooms.
Eutrophication is the leading cause of pollution of many water bodies.
Some steps which can actually be taken to control it are:
1. Biomanipulation can be done which is basically altering a food web to restore the ecosystem health.
2. Excess nutrients can be diverted. 
3. Nutrients can be altered in specific ratios.

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