02923nam 2200469 450 991083003790332120191106130840.01-118-82548-91-118-82549-71-118-82551-9(CKB)4330000000007234(MiAaPQ)EBC5928199(PPN)254879691(EXLCZ)99433000000000723420191106d2020 uy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierPhosphorus pollution control policies and strategies /Aleksandra DrizoHoboken, NJ :Wiley Blackwell,2020.1 online resource (172 pages)New Analytical Methods in Earth and Environmental Science1-118-82542-X "The word "eutrophic" originates from a word eutrophy, from Greek eutrophia meaning nutrition and eutrophos which means well-fed. Eutrophication has many different definitions depending on whether they describe solely the process of nutrient enrichment or whether they also include impacts and problems caused by such enrichment. In its simplest form eutrophication is defined as the over enrichment of receiving waters with mineral nutrients, phosphorus, and nitrogen. It results in excessive production and growth of autotrophs, in particular algae, cyanobacteria (Box 1) and aquatic macrophytes (Correll, 1998; Ansari et al, 2011; van Ginkel, 2011). The increased bacterial populations and vegetation abundance result in high respiration rates leading to hypoxia (oxygen depletion). Hypoxia and algal blooms (Figure 1) are the two most acute symptoms of eutrophication (Ansari et al, 2011; UNEP, 2017). Hypoxia or oxygen depletion in a water body often leads to 'dead zones'-regions where levels of oxygen in the water are reduced to a point that can no longer support living aquatic organisms (Figure 1). Hypoxia in the northern Gulf of Mexico is defined as a concentration of dissolved oxygen less than 2 mg/L (2 ppm). In other oceans of the world, the upper limit for hypoxia may be as high as 3-5 mg/L. The new knowledge on oxygen depletion (hypoxia) and related phenomena in aquatic systems has been recently reviewed by Friedrich et al (2014)"--Provided by publisher.New analytical methods in earth and environmental science.PhosphorusEnvironmental aspectsWaterPhosphorus contentEutrophicationControlPhosphorusEnvironmental aspects.WaterPhosphorus content.EutrophicationControl.628.16841Drizo Aleksandra1964-1723523MiAaPQMiAaPQMiAaPQBOOK9910830037903321Phosphorus pollution control4124865UNINA