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Explain how excessive amounts of nutrients affect a water ecosystem?
Wiki User
∙ 15y ago
excessive amounts of nutrients cause excessive growth of algae,when algae at the bottom of the layer die,bacteria that decompose the dead algae use oxygen in the water killing the fish and other organisms in the water ,due to a lack of oxygen
Wiki User
∙ 15y ago
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How can you tell if water is polluted?
Water pollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. When it is unfit for its intended use, water is considered polluted. Many causes of pollution including sewage and fertilizers contain nutrients such as nitrates and phosphates. In excess levels, nutrients over stimulate the growth of aquatic plants and algae. Excessive growth of these types of organisms consequently clogs our waterways, use up dissolved oxygen as they decompose, and block light to deeper waters.
Reason of eutrophication?
by p dMember since:May 23, 2006Total points:196 (Level 1)Add ContactBlockBest Answer - Chosen by Votersit is a natural process in lakes, estuaries.But sometimes human acts accelerate the system.Here excessive amounts of plant nutrients (primarily phosphorus, nitrogen, and carbon) are added to streams and lakes in various ways. Runoff from agricultural fields, field lots, urban lawns, and golf courses is one source of these nutrients. Untreated, or partially-treated, domestic sewage is another major source. Sewage is a particular source of phosphorus to lakes when detergents containe large amounts of phosphates.this leads to the excessive growth, or"blooms", of algae promoted by these phosphates. these algae cover the entire surface, thus disallows penetration of sunlight to lower parts of the waters and thus the submerged flora get affected.tyey also cause depletion of oxygen and the fishes are killed.Sometimes those fishes are replaced by species more resistant to the new conditions.Thus eutrophication can be considered a form of pollution because it promotes plant growth, favoring certain species over others and forcing a change in species composition. eventually the entire ecosystem gets afftected....phytoplankton...zooplankton… and small water creatures....the birds feeding on them and all.Doies it afects the biodiversity to a very large extent.Sometimes the algae ecen give out toxins for the animals there.Surveys showed that 54% of lakes in Asia are eutrophic; in Europe, 53%; in North America, 48%; in South America, 41%; and in Africa, 28%.
How does crop rotation help preseve soil?
Different crops use and leave different vitamins and minerals in the soil. Planting a variety of crops will maintain good amounts of nutrients in the soil.
How do rain forest's help the environment?
By containing and capturing huge amounts of carbon dioxide
How does soil affect crops that farmers grow?
The soil determines what crops can grow, and how well they will grow. Organic matter in the soil, amount of clay, and pH (acidity) are all factors in how fertile the soil is. Different crops use different amounts of the various nutrients; this is why crop roatation and summer fallow are used. That way it gives the soil time to replenish its nutrients and then that crop can be grown again and not suffer from lacking nutrients.
How are detergents are related to eutrophication?
Eutrophication, is set in motion when excessive amounts of phosphates and nitrates enter the natural ecosystem. Some sources of these dissolved nutrients include raw sewage, fertilizer run off, detergents, and animal wastes
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