Aquaculture Essay Example | Topics and Well Written Essays - 1250 words

Aquaculture - Essay Example The impact of wastes from the aquaculture pollutes the aquatic environment, because aquaculture is also an industry, which produces sea species in large amount. The modern methods of aquaculture have been found to pollute seawater and fresh waters than that of fish farming. Reading and Midlen [1998] suggests that â€Å"without drastically changing agricultural farming practices this situation will not change in the foreseeable future† p-21. They quote a survey report as an illustration â€Å"for example, fish farming in Denmark accounts for less than 1% of the total nitrogen loading and less than 2% of the total phosphorous loading [FES, 1992. In this respect, the environmental impact from fish farming waste is small in comparison to the potential impact of agricultural wastes†p-21. The most significant effect of the aqua waste is the nutrient concentrations in natural waters, which results in an increase of plankton and microbial populations. The wasted fish feed becomes the source of the wastes. Some of the nutrients present in the fish feed for fishes grown in aquaculture does not allow the nutrients that come through the wastes to get dissolved. Reading and Midlen [1998] observe this undissolved waste as â€Å"solid faecal waste†. The excretion of chemical and drugs used in aquaculture for maintenance is another polluting agent affecting the fresh water environment. This excretion of chemicals excreted as wastes are accumulated as organic sediments in the fresh and seawater environment. Therefore, researches are going on to make this aquaculture eco friendly. Since the aquaculture requires a fresh water system, the effect of the chemicals and drugs used in an aqua system has more possibilities to pollute the water system. Ponds are generally preferred to cultivate aquatic species. However, the problem related in farming inside a pond is that walls are constructed to