At somewhat greater eutrophication level, the selection pressure of the limiting factor is somewhat lower, and a more diverse phytoplankton community develops whose biomass is higher.
Of all the above methods of controlling eutrophication, that Essay about eutrophication limitation of nutrient input is certainly the best and the most reliable. A third term, dystrophic, is sometimes used: This work was done on Canadian lakes.
Chemically, oligotrophic lakes are rich in dissolved oxygen and poor in nitrogen and phosphorus Essay about eutrophication eutrophic lakes are poor in dissolved oxygen and rich in nitrogen and phosphorus.
Under these conditions, typical oligotrophic species having a high affinity for the limiting factor and show in a marked light tolerance tend to be selected. Although planktonic algae constitute a very significant factor in lake eutrophication, the effects of nutrient-enrichment on higher aquatic plants are by no means insignificant, especially in shallow waters.
Similar attitudes toward pollution exist in suburban and urban communities. The major factor determining phytoplankton productivity seems to be phosphorus content rather than latitude.
P ratio greater than Lake and River Ecosystems. Environmental Protection Agency EPA studies have shown that in a natural forested area, 40 percent of rainwater returns to the atmosphere through evapotranspiration, 50 percent filters into subsurface flow, and 10 percent runs off the land surface into a receiving water body.
This discrepancy in determining the health of the watershed ecosystem impacted the importance stakeholders placed on water quality improvement efforts.
Understanding and Reducing the Effects of Nutrient Pollution.
The following procedures have been recommended by various limnologists to slow down the eutrophication process.
Oligotrophic waters are clear and transparent whereas eutrophic generally turbid and muddy and much less transparent.
Case studies by the Iowa Department of Natural Resources on Squaw Creek Watershed in and Cedar Lake Watershed in showed that perceptions of good water quality varied widely between water quality specialists and local landowners based on different ideas of how the water body should function.
This natural process of enrichment can take thousands of years and result in the succession of a glacial lake into a bog and, eventually, a prairie.
This example Eutrophication Essay is published for educational and informational purposes only. The common algae of such waters belong to Cyanophyta and Bacillariophyta Melosira, Fragilaria, Asterionella. These workers have chosen the annual primary production as a trophic state index and have shown that this index is greatly influenced by such physical processes as the intensity of vertical mixing.
In cyanophyte-bacteria associations, bacteria degrade organic matter, producing CO2 which is utilized by the blue-greens in their photosynthesis. It has been felt that such key processes as recycling of nutrients and sediment formation or release should be included to represent the dynamic nature of ecosystems.
Later, the concept of rates, i. The control of these fish population that feed on plankton and benthos does seem to constitute a promising method of lowering the trophic level of a lake. Agricultural Phosphorous and Eutrophication.
Non-gas vacuolate species tend to dominate here, and good examples are species of Oscillatoria; Microcystis, Aphanizomenon and Anabaena exemplify gas vacuolate forms of deep lakes.
The biomass concentration in deep lakes is low and the blue-green algal species are all gas vacuolate forms that grow in distinct strata. It is already known that some correlation exists between dissolved solids and cell dimensions of certain algae, e.
However, with the removal of vegetation and its replacement with impervious surfaces land cover that does not allow for the water to soak into the ground, e.
Environmental Protection Agency, Office of Water. Oglesby and Edmondson have proposed three methods of nutrient limitation a removal of nitrogen and phosphorus at their source; b the diversion of nutrient-rich effluents or wastewaters from receiving bodies, and c dilution of nutrients in lakes by the controlled addition of water low in nutrients.
The northern area of this lake was mostly inorganically polluted whereas the southern zone had largely organic pollutants.
This ratio approaches 10 as some sewage is discharged into an oligotrophic lake to eutrophic is a very slow process, occurring in thousands or millions of years.
Dystrophic lakes are usually parts of certain bogs. The classical trophic state indexes are connected to external parameters by the rate of primary production.Oct 26, · View and download eutrophication essays examples. Also discover topics, titles, outlines, thesis statements, and conclusions for your eutrophication essay.
Free Essay: Eutrophication comes from the Greek word "eutrophos" meaning well-nourished. In other words, this natural process found in water occurs.
- Eutrophication is the ecosystem response to an excessive richness of nutrients in an aquatic ecosystem. Normally eutrophication is a non-harmful, natural process that occurs when a body of water is aging.
Eutrophication Introduction Europhication (the over enrichment of aquatic ecosystems with nutrients leading to algal blooms and anoxic events) is a persistent condition of surface waters and a widespread environmental problem (Carpenter, ).
Free Essay: What is eutrophication? Eutrophication is, in the simplest terms, too much of a good thing. It occurs when too many nutrients are deposited into.
There is natural eutrophication and cultural eutrophication. Cultural eutrophication is usually defined as the over-enrichment of lakes and rivers with nutrients, usually phosphorous, leading to excessive growth of algae and other aquatic plants.Download