Cultural eutrophication

With the passage of time, a wide array of environmental problems became evident, particularly cultural eutrophication due to excess phosphorus inputs. In... 

Disturbances to ocean and human health resulting from cultural eutrophication. Source After Committee on Environment and Natural Resources (2003). An Assessment of Coastal Hypoxia and Eutrophication in U.S. Waters. National Science and Technology Council Committee on Environment and Natural Resources, p. 11. 

The ultimate sources of nitrogen and phosphorus causing cultural eutrophication are industrial N2 fixation, fossil-fuel burning, and the mining of phosphorite. The nitrogen and phosphorus used as fertilizer have three possible 6tes they either enter the food chain, become part of the soil, or are washed off the land by stormwater runoff The nutrients that enter the food chain eventually end up as either animal wastes or dead biomass. Animal wastes include human sewage, livestock manure, and pet feces. Sanitary... 

Worldwide cultural eutrophication is most commonly seen in marginal seas and bays. In Europe, observations since the 1950s have documented increased cultural eutrophication in the North, Baltic, Adriatic, Irish, Mediterranean, Black, and Kattegat Seas. In the United States, cultural eutrophication hot spots include the Gulf of Mexico, Chesapeake Bay, Long Island Sound, Narragansett Bay, Florida Bay, and Tampa Bay. In most of these locales, cultural eutrophication has progressed such that hypoxia is now a seasonal or persistent feature. 

Cultural eutrophication Overgrowth of algae in natural waters caused by runoff of fertiflzers from land-based applications. 

Cultural Eutrophication accelerated aging of water body due to human influence and water pollution... 

Biodegradation estimated half-life to be very long in river, eutrophic pond, eutrophic lake and oligotrophic lake by the one compartment model with no acclimated cultures obtained during the screening studies (Smith et al. 1978). 

Increased knowledge of the problem of cultural eutrophication has led to the modification of secondary activated sludge systems so as to achieve nitrogen and phosphorus removal as well as detritus oxidation, a process known as biological nutrient removal (BNR). 

Smith, S. V., andHoUibaugh, J. T. (1989). Carbon-controUednitrogencychnginamarine macrocosm An ecosystem-scale model for managing cultural eutrophication. Mar. Ecol. Prog. Ser. 52, 103—109. 

The greatest impacts from cultural eutrophication and hydrological modifications may have yet to be realized. Bouwman et ah (2005) predict a global increase in river N from 1970 to 2030 of 46% for the Indian, 38% for the Pacific, and only 6% for the Atlantic oceans, because of the predominance of developing countries in watersheds draining into the Indian and Pacific basins. These authors predicted a... 

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