Nitrogen, phosphorus, and eutrophication in streams
نویسندگان
چکیده
منابع مشابه
Nitrogen, phosphorus, and eutrophication in the coastal marine environment.
The distribution of inorganic nitrogen and phosphorus and bioassay experiments both show that nitrogen is the critical limiting factor to algal growth and eutrophication in coastal marine waters. About twice the amount of phosphate as can be used by the algae is normally present. This surplus results from the low nitrogen to phosphorus ratio in terrigenous contributions, including human waste, ...
متن کاملRelation of Land-use to Total Nitrogen/ Phosphorus in Streams
Comprehensive watershed management requires the determination of both point and non-point sources of pollution within a watershed. The primary non-point source pollutants in a watershed are nutrients, sediment, animal wastes, salts, and pesticides. Nutrients are mainly nitrogen and phosphorous. Agricultural activities and wastewater treatment plants are the principal sources of nitrogen in surf...
متن کاملRationale for control of anthropogenic nitrogen and phosphorus to reduce eutrophication of inland waters.
Concentrations of phosphorus and nitrogen in surface waters are being regulated in the United States and European Union. Human activity has raised the concentrations of these nutrients, leading to eutrophication of inland waters, which causes nuisance growth of algae and other aquatic plants. Control of phosphorus often has had the highest priority because of its presumed leading role in limiti...
متن کاملEutrophication and trophic state in rivers and streams
Many natural streams are net heterotrophic, so I propose that trophic state be divided into autotrophic and heterotrophic state. This division allows consideration of the influence of external carbon sources as well as nutrients such as nitrogen and phosphorus. Empirical results suggest that phosphorus and nitrogen are the most important nutrients regulating autotrophic state in flowing waters ...
متن کاملPhosphorus control is critical to mitigating eutrophication.
T he Midwest floods of 2008 added more than just water to the region’s lakes, reservoirs, and rivers. Runoff from farms and towns carries a heavy load of silt, nutrients, and other pollutants. The nutrients trigger blooms of algae, which taint drinking water. Death and decay of the algae depletes oxygen, kills fish and bottom-dwelling animals, and thereby creates ‘‘dead zones’’ in the body of w...
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ژورنال
عنوان ژورنال: Inland Waters
سال: 2016
ISSN: 2044-2041,2044-205X
DOI: 10.5268/iw-6.2.909