Colored dissolved organic matter and dissolved organic carbon exclusion from lake ice: Implications for irradiance transmission and carbon cycling
نویسندگان
چکیده
منابع مشابه
Temperature Dependence of Photodegradation of Dissolved Organic Matter to Dissolved Inorganic Carbon and Particulate Organic Carbon
Photochemical transformation of dissolved organic matter (DOM) has been studied for more than two decades. Usually, laboratory or "in-situ" experiments are used to determine photodegradation variables. A common problem with these experiments is that the photodegradation experiments are done at higher than ambient temperature. Five laboratory experiments were done to determine the effect of temp...
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...
متن کاملRelationships between colored dissolved organic matter and dissolved organic carbon in different coastal gradients of the Baltic Sea
Due to high terrestrial runoff, the Baltic Sea is rich in dissolved organic carbon (DOC), the light-absorbing fraction of which is referred to as colored dissolved organic matter (CDOM). Inputs of DOC and CDOM are predicted to increase with climate change, affecting coastal ecosystems. We found that the relationships between DOC, CDOM, salinity, and Secchi depth all differed between the two coa...
متن کاملLake metabolism: Relationships with dissolved organic carbon and phosphorus
Recent literature has suggested that for many lakes and rivers, the respiratory breakdown of organic matter (R) exceeds production of organic matter by photosynthesis (gross primary production [GPP]) within the water body. This metabolic balance (GPP , R; ‘‘heterotrophy’’) implies that allochthonous organic matter supports a portion of the aquatic ecosystem’s respiration. Evidence that many lak...
متن کاملBlack Carbon in Estuarine and Coastal Ocean Dissolved Organic Matter
We measured black carbon (BC) in ultrafiltered, high–molecular weight dissolved organic matter (UDOM) in surface waters of Delaware Bay, Chesapeake Bay, and the adjacent Atlantic Ocean (U.S.A.) to investigate the importance of riverine and estuarine dissolved organic matter (DOM) as a source of BC to the ocean. BC was 5– 72% of UDOM-C (27 6 17%), which corresponds to 8.9 6 6.5% of dissolved org...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 2002
ISSN: 0024-3590
DOI: 10.4319/lo.2002.47.5.1283