HR: 16:15h
AN: OS44B-02    [Abstracts]
TI: Carbon Fluxes to the Sediment in Monterey Bay: August 2001-Febuary 2002
AU: * George, C
EM: hikachic@stanford.edu
AF: Paytan Chemical Oceanography Lab, 207 Braun (Building 320) , Stanford, CA 94305 United States
AB: Carbon and nitrogen content of oceanic sinking particulate matter collected in sediment traps between August 2001 and February 2002 in Monterey Bay on the northern California Coast was measured. This time interval captures seasonal changes from the end of the summer and until the end of winter, and characterized by a transition from high to low sea surface temperatures and no significant upwelling. The carbon (C) and nitrogen (N) fluxes to the deep ocean were estimated and the isotopic composition of the sinking particulate matter determined. A decrease in the fluxes of carbon and nitrogen over this interval was observed. This decrease corresponded to a decrease in total phytoplankton abundance. The isotopic composition of the sinking particulate matter is consistent with a marine origin with minimal terrestrial input. The data point to a close relation between primary production and carbon and nitrogen fluxes in Monterey Bay during the sampling interval.
DE: 4806 Carbon cycling
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting