California Coastal Upwelling Onset Variability: Cross-Shore and Bottom-Up Propagation in the Planktonic Ecosystem
| Type | Article | ||||||||
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| Date | 2013-05 | ||||||||
| Language | English | ||||||||
| Author(s) | Chenillat Fanny1, Riviere Pascal2, Capet Xavier3, Franks Peter J. S.4, Blanke Bruno2 | ||||||||
| Affiliation(s) | 1 : Inst Univ Europe Mer, CNRS UBO IRD IFREMER, Lab Sci Environm Marin LEMAR, Plouzane, France. 2 : Univ Bretagne Occidentale, CNRS IFREMER IRD UBO, Lab Phys Oceans, Brest, France. 3 : Inst Pierre Simon Laplace, CNRS UPMC IRD MNHN, Lab Oceanog & Climat LOCEAN, Paris, France. 4 : Univ Calif San Diego, Scripps Inst Oceanog, Integrat Oceanog Div, La Jolla, CA 92093 USA. |
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| Source | Plos One (1932-6203) (Public Library Science), 2013-05 , Vol. 8 , N. 5 , P. - | ||||||||
| DOI | 10.1371/journal.pone.0062281 | ||||||||
| WOS© Times Cited | 22 | ||||||||
| Abstract | The variability of the California Current System (CCS) is primarily driven by variability in regional wind forcing. In particular, the timing of the spring transition, i.e., the onset of upwelling-favorable winds, varies considerably in the CCS with changes in the North Pacific Gyre Oscillation. Using a coupled physical-biogeochemical model, this study examines the sensitivity of the ecosystem functioning in the CCS to a lead or lag in the spring transition. An early spring transition results in an increased vertical nutrient flux at the coast, with the largest ecosystem consequences, both in relative amplitude and persistence, hundreds of kilometers offshore and at the highest trophic level of the modeled food web. A budget analysis reveals that the propagation of the perturbation offshore and up the food web is driven by remineralization and grazing/predation involving both large and small plankton species. | ||||||||
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