Black water, also known as “algal blooms are the result of an excess of nutrients, particularly phosphorus and nitrogen. The excess of nutrients may originate from fertilizers that are applied to land for agricultural or recreational purposes, these nutrients can then enter watersheds through water runoff.” When phosphates get into water systems, higher concentrations cause increased growth of algae and plants. Algae tend to out-compete plants under these conditions. Because of this, there’s a big possibility that many plant species may begin to die. This dead organic matter becomes food for bacteria that decomposes it. With more food available, the bacteria can increase in number and use up the dissolved oxygen in the water. When the dissolved oxygen content decreases, many fish and aquatic insects cannot survive. This results in a dead area
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