Release of dissolved organic matter by coastal diatoms
نویسندگان
چکیده
منابع مشابه
Black 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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We examined annual nutrient changes (nitrate, phosphate and ammonium) and the net dissolved organic carbon (DOC), nitrogen (DON) and phosphorus (DOP) release using in situ benthic incubations in a Posidonia oceanica meadow and in unvegetated sediments of Magalluf Bay (Mallorca Island, Spain) at monthly intervals. We also examined the role of the P. oceanica meadow in the C:N:P ratio transformat...
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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...
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Excited triplet states of aromatic ketones and quinones are used as proxies to assess the reactivity of excited triplet states of the dissolved organic matter ((3)DOM*) in natural waters. (3)DOM* are crucial transients in environmental photochemistry responsible for contaminant transformation, production of reactive oxygen species, and potentially photobleaching of DOM. In recent photochemical ...
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Naturally occurring dissolved organic matter [DOM) was investigated in a lagoonal system with the aim to study the origin and mixing of the Doh4 components. Water samples were collected in the Sacca di Goro lagoon (PO river delta, Italy) and analysed by means of different techniques, such as fluorescence, absorpt~on and dissolved organic carbon (DOC) measurements. Synchronous fluorescence spect...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 2007
ISSN: 0024-3590
DOI: 10.4319/lo.2007.52.2.0798