Temporal variability of downward fluxes of organic carbon off Monterey Bay (CA, USA)
Castro, Carmen G.
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The interannual and seasonal changes in the vertical biogenic particulate fluxes, and its relation to the environmental conditions in the coastal upwelling region of Monterey Bay (Central California) has been studied since 1998 till 2006. The magnitude and composition of the settling particles presented a large interannual and seasonal variability. Organic carbon (Corg) fluxes ranged between 4 - 296 mgC·m-2·day-1 and 1 - 142 mgC·m-2·day-1 for shallow and deep sediment traps respectively. The time series of Corg vertical export was characterized by pulses of intense fluxes, that were associated to peaks of primary production, generally during upwelling periods. These results illustrate how the hydrodynamics and primary production of this coastal upwelling system regulates the vertical export of biogenic particles.
Presented at the 2015 Aquatic Sciences Meeting, 22-27 Feb 2015, Granada Spain
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