Eutrophication In Water

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As global population increases rapidly, the demand for food increases as well, which in turn, leads to a steep rise in agricultural activities to meet the growing need for food, to feed more of the global population. However, agricultural activities have been proven to pollute water resources. Richard (2015) noted that Agricultural activities account for 53% of water pollution incidents during the years 2010 to 2012. As technology advances, fertilizers and pesticides are easily available, and also more potent in enhancing plant growth and keeping away pests. These fertilizers and pesticides that are used to speed up the growth of these crops are not disposed of properly, and pollute water resources when the pesticides or fertilizers are disposed…show more content…
Eutrophication occurs when there is an over supply of nutrients in an environment, and can cause serious problems especially in water bodies. The increase in nutrient levels could result in algal blooms which is detrimental to the water resource, as algal blooms disrupt the natural ecosystem that functions in the water resource and take in the oxygen in the water body and blocks out sunlight. As little or no oxygen is present in the water resource, much of the aquatic life dies out, resulting in dead zones. Luckily, dead zones mostly occur in smaller water bodies, and since Loktak Lake is a large one, it did not become a dead zone, but still faces the problem of eutrophication. Eutrophication makes water resources unsafe for use as certain algal blooms, fertilizers or pesticides contain harmful chemicals that is not safe for usage. Lake Loktak is thickly populated with areas surrounded by cultivated lands. (Rashmi Rekha Patra, 2012) The fertilizers and sewage being washed or improperly disposed into the Lake are the main causes of eutrophication. The effects of eutrophication on water resources are vast. The water becomes unusable for recreational, consumption or agricultural purposes. Fisherfolk are the most greatly affected, as they would then lose their livelihood because the fish that they catch are considered safe to consume or

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