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| Titel |
The role of continental shelves in nitrogen and carbon cycling: Northwestern North Atlantic case study |
| VerfasserIn |
K. Fennel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 6, no. 2 ; Nr. 6, no. 2 (2010-06-04), S.539-548 |
| Datensatznummer |
250003469
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| Publikation (Nr.) |
 copernicus.org/os-6-539-2010.pdf |
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| Zusammenfassung |
| Continental shelves play a key role in the cycling of nitrogen and
carbon. Here the physical transport and biogeochemical transformation
processes affecting the fluxes into and out of continental shelf
systems are reviewed, and their role in the global cycling of both
elements is discussed. Uncertainties in the magnitude of organic and inorganic matter exchange
between shelves and the open ocean is a major source of uncertainty in
observation-based estimates of nitrogen and carbon fluxes. The shelf-open ocean exchange is
hard to quantify based on observations alone, but can be inferred from
biogeochemical models. Model-based nitrogen and carbon budgets are
presented for the Northwestern North Atlantic continental
shelf. Results indicate that shelves are an important sink for fixed
nitrogen and a source of alkalinity, but are not much more efficient
in exporting organic carbon to the deep ocean than the adjacent open
ocean for the shelf region considered. |
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