Lability of DOC transported by Alaskan rivers to the Arctic Ocean


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dc.contributor.author Holmes, Robert M.
dc.contributor.author McClelland, James W.
dc.contributor.author Raymond, Peter A.
dc.contributor.author Frazer, Breton B.
dc.contributor.author Peterson, Bruce J.
dc.contributor.author Stieglitz, Marc
dc.date.accessioned 2010-04-29T13:47:34Z
dc.date.available 2010-04-29T13:47:34Z
dc.date.issued 2008-02-09
dc.identifier.citation Geophysical Research Letters 35 (2008): L03402 en_US
dc.identifier.uri http://hdl.handle.net/1912/3356
dc.description Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 35 (2008): L03402, doi:10.1029/2007GL032837. en_US
dc.description.abstract Arctic rivers transport huge quantities of dissolved organic carbon (DOC) to the Arctic Ocean. The prevailing paradigm is that DOC in arctic rivers is refractory and therefore of little significance for the biogeochemistry of the Arctic Ocean. We show that there is substantial seasonal variability in the lability of DOC transported by Alaskan rivers to the Arctic Ocean: little DOC is lost during incubations of samples collected during summer, but substantial losses (20–40%) occur during incubations of samples collected during the spring freshet when the majority of the annual DOC flux occurs. We speculate that restricting sampling to summer may have biased past studies. If so, then fluvial inputs of DOC to the Arctic Ocean may have a much larger influence on coastal ocean biogeochemistry than previously realized, and reconsideration of the role of terrigenous DOC on carbon, microbial, and food-web dynamics on the arctic shelf will be warranted. en_US
dc.description.sponsorship This material is based on work supported by the National Science Foundation under grant numbers OPP-0436106, OPP- 0519840, and EAR-0403962, and is a contribution to the Study of Environmental Arctic Change (SEARCH). en_US
dc.format.mimetype text/plain
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.uri http://dx.doi.org/10.1029/2007GL032837
dc.subject DOC en_US
dc.subject Arctic en_US
dc.subject Rivers en_US
dc.title Lability of DOC transported by Alaskan rivers to the Arctic Ocean en_US
dc.type Article en_US
dc.identifier.doi 10.1029/2007GL032837

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