The processing and impact of dissolved riverine nitrogen in the Arctic Ocean


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dc.contributor.author Tank, Suzanne E.
dc.contributor.author Manizza, Manfredi
dc.contributor.author Holmes, Robert M.
dc.contributor.author McClelland, James W.
dc.contributor.author Peterson, Bruce J.
dc.date.accessioned 2012-04-03T15:11:06Z
dc.date.available 2012-04-03T15:11:06Z
dc.date.issued 2011-06-11
dc.identifier.citation Estuaries and Coasts 35 (2012): 401-415 en_US
dc.identifier.uri http://hdl.handle.net/1912/5109
dc.description © The Author(s), 2011. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Estuaries and Coasts 35 (2012): 401-415, doi:10.1007/s12237-011-9417-3. en_US
dc.description.abstract Although the Arctic Ocean is the most riverine-influenced of all of the world’s oceans, the importance of terrigenous nutrients in this environment is poorly understood. This study couples estimates of circumpolar riverine nutrient fluxes from the PARTNERS (Pan-Arctic River Transport of Nutrients, Organic Matter, and Suspended Sediments) Project with a regionally configured version of the MIT general circulation model to develop estimates of the distribution and availability of dissolved riverine N in the Arctic Ocean, assess its importance for primary production, and compare these estimates to potential bacterial production fueled by riverine C. Because riverine dissolved organic nitrogen is remineralized slowly, riverine N is available for uptake well into the open ocean. Despite this, we estimate that even when recycling is considered, riverine N may support 0.5–1.5 Tmol C year−1 of primary production, a small proportion of total Arctic Ocean photosynthesis. Rapid uptake of dissolved inorganic nitrogen coupled with relatively high rates of dissolved organic nitrogen regeneration in N-limited nearshore regions, however, leads to potential localized rates of riverine-supported photosynthesis that represent a substantial proportion of nearshore production. en_US
dc.description.sponsorship Funding for this work was provided through NSFOPP- 0229302 and NSF-OPP-0732985.Support to SET was additionally provided by an NSERC Postdoctoral Fellowship. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Springer en_US
dc.relation.uri http://dx.doi.org/10.1007/s12237-011-9417-3
dc.rights.uri creativecommons.org/licenses/by-nc/3.0/ *
dc.subject Arctic Ocean en_US
dc.subject Primary Production en_US
dc.subject Land–ocean coupling en_US
dc.subject Estuarine processes en_US
dc.subject Riverine nutrients en_US
dc.subject Dissolved organic matter en_US
dc.subject Photodegradation en_US
dc.title The processing and impact of dissolved riverine nitrogen in the Arctic Ocean en_US
dc.type Article en_US
dc.identifier.doi 10.1007/s12237-011-9417-3

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