Eutrophication is “the process by which a body of water acquires a high concentration of nutrients, especially phosphates and nitrates. These typically promote excessive growth of algae. As the algae die and decompose, high levels of organic matter and the decomposing organisms deplete the water available oxygen, cause the death of other organisms, such as fish. Eutrophication is a natu...
Eutrophication is a concern in the Chesapeake Bay. Eutrophication is caused by excessive amounts of nutrients. Excessive nutrients in the bay have negative effects on the bay's ecosystem. The extra nutrients make the environment unbalanced. The extra nutrients cause a chain reaction that eventually kills most of the organisms in that area. This is what is known as a dead zone.
Eutrophication is a concern in the Chesapeake Bay. Eutrophication is caused by excessive amounts of nutrients. Excessive nutrients in the bay have negative affects on the bay's ecosystem. The extra nutrients make the environment unbalanced. The extra nutrients cause a chain reaction that depletes oxygen and kills most of the organisms in that area. This is what is known as a dead zone.
Because of farm fertilizer, an excess quantity of nitrogen and phosphorus can be wash down becoming runoff into rivers. From this, marine algal blooms cause the water to turn green from the chlorophyll (Reed, 2011). Eutrophication then becomes a dilemma in the system causing either an increase of primary production or an expansion of algae. An enormous expansion of phytoplankton on the water’s surface is then established. At the same time the water column is also stratified, meaning things such as the temperature and salinity are not sync from top to bottom. The seasonal warm surface water has a low density forming a saltier layer above while the cooler and more dense water masses near the bottom layer is isolated from the top cutting off oxygen supply from the atmosphere (Overview, 2008).
An unhealthy river is one with high eutrophication, high levels of suspended sediment load, and high turbidity. Eutrophication is the process where bodies of water become enriched in dissolved nutrients (as phosphates) that stimulate the growth of aquatic plant life, which usually results in the depletion of dissolved oxygen. This hur...
We see toxic blooms of algae as a natural occurrences, mostly referred to as, “red tides” but the interesting things about algae blooms in excess, although have been due to river run off of iron and other nutrients in the past, they are now happening due to the actions of humans. Now we have a perfect record which provides all the evidence that algae kills marine life in mass quantity, due to natural blooms, however, a more current example of algae blooming out of control in the Baltic Sea.
Biogeochemical Cycling is a pathway by which chemicals circulate through the ecosystem involving both nonliving (abiotic) and living (biotic) components. Human activities can cause an imbalance in biogeochemical cycling by mining and/or by burning fossil fuel, which increases the amounts of chemical elements removed from cycling and removing within the ecosystem. Human activities interfere with the water cycling in three ways; first, they withdraw water from aquifers, second, they build roads, buildings and increase in runoffs, thirdly, they interfere with natural selection in purifying water and instead add pollution and chemicals to the water. Over enrichment caused by human activities lead to excessive oxygen reduction and bacterial growth, known as eutrophication. Eutrophication leads to algae dying and decay to oxygen consumption which causes fish to die.
The lakes which have small algae propagation are called oligotrophic lakes. Accordingly the lakes which have large algae propagation are called eutrophic lakes. There are many factors to determine the algae propagation in a lake such as temperature, light, depth, size of the lake and nutrients from the surrounding environment, etc. In fact the Great Lakes were all oligotrophic lakes before industrialization. The factors such a size, depth and climate would keep the lakes cool and clear for a long-term. There is only a small amount of fertilizer and organic matters decompose from forest areas in the lakes at that time. Due to reduction of vegetation and thermal pollution, the temperature of many tributaries of the lake has been increased. Other than that highly concentrated city and agriculture makes a lot of nutrients and organic matter, such as inorganic phosphorus detergents and fertilizers, flowing into the lake increased nutrient content. In fact the increasing nutrients stimulate the growth of green plants such as algae. The plant will decompose after death and decomposition process consumes dissolved oxygen in the water. As a result some fish will died from lack of oxygen and the green plants will experience a highly growth resulting in the cloudy water which means increasing eutrophication process. Lake Erie has the highest biomass yield mainly because it is the shallowest water, the highest temperature of the lake so that it is the first and most serious eutrophication lake of the Great Lakes. The other reason is that the development of agriculture and the city in the earlier period reached a higher level. About 1/3 of the population of the Great Lakes area lives in Lake Erie region. This leads to the highly higher flow of contaminants to Lake Erie than any other lakes. It is generally agreed that Lake Erie was dying In Canada and the United States. Water polluted warning signs are visible
Eutrophication is the process “by which a body of water acquires a high concentration of nutrients, especially phosphates and nitrates. These typically promote excessive growth of algae. As the algae dies and decomposes, high levels of organic matter and the decomposing organisms deplete the water of available oxygen, causing the death of other organisms, such as fish. Eutrophication is a natural, slow-aging process for a water body, but human activity greatly speeds up that process.” - Art, 1993.
As the given situation describes, eutrophication is a result of the presence of nitrogen and phosphorus in river since no protection methods are carried out to end the release of waste into the water bodies. Such rivers are commonly known as sensitive rivers. These nutrients excite the production of algae providing food for their growth under the accurate circumstances thus causing eutrophication. Eutrophication can harm the ecosystem causing unwanted alteration in aquatic population, extreme reduction of oxygen, health issues to human-beings and animals, expensive water treatment costs and, interfering with recreational significance of water (Kuba et al., 1997). Thus the wastewater must be maintained from nitrogen and phosphorus before disposing into water bodies. The removal of such harmful nutrients must be carried out efficiently in the secondary treatment itself.