Contribution of dissolved organic nitrogen from rivers to estuarine eutrophication
نویسندگان
چکیده
منابع مشابه
Major bacterial contribution to marine dissolved organic nitrogen
Next to N2 gas, the largest pool of reduced nitrogen in the ocean resides in the enormous reservoir of dissolved organic nitrogen (DON). The chemical identity of most of this material, and the mechanisms by which it is cycled, remain fundamental questions in contemporary oceanography. Amino acid enantiomeric ratios in the high molecular weight fraction of DON from surface and deep water in thre...
متن کاملBioavailability of dissolved organic nitrogen and carbon from nine rivers in the eastern United States
Dissolved organic nitrogen (DON) and carbon (DOC) often dominate the dissolved nitrogen and organic carbon fluxes from rivers, yet they are not considered to affect coastal water quality because of their assumed refractory nature. The objective of this study was to quantify DON and DOC bioavailability to bacteria in 9 rivers on the east coast of the United States during a 6 d dark bioassay expe...
متن کاملIntegrated modelling of eutrophication and organic contaminant fate in rivers
Eutrophication and contamination by toxic organic pollutants are the major problems in water quality management. Despite the fact that both problems have been subjected to extensive research and modelling, they have traditionally been treated separately. Because the models used are single-issue models, many interactions between nutrient cycles and organic contaminant fate and effect are missed....
متن کاملContribution of amino compounds to dissolved organic nitrogen in forest soils
Dissolved organic nitrogen (DON) may play an important role in plant nutrition and nitrogen fluxes in forest ecosystems. In spite of the apparent importance of DON, there is a paucity of information concerning its chemical composition. However, it is exactly this chemical characterization that is required to understand the importance of DON in ecosystem processes. The primary objective of this ...
متن کاملUtilizing colored dissolved organic matter to derive dissolved black carbon export by arctic rivers
1 Department of Marine Sciences, Skidaway Institute of Oceanography, University of Georgia, Savannah, GA, USA, 2 Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, USA, 3 Department of Geography, Northumbria University, Newcastle-upon-Tyne, UK, 4 Woods Hole Research Center, Falmouth, MA, USA, 5 University of Texas Marine Science Institute, Port Aransa...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1997
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps159001