California Basin Study (CaBS): The Role of Zooplankton and Micronektron in the Cycling and Remineralization of Chemical Materials in the Southern California Bight: Progress Report 6, May 1985-November 1988.

摘要

The overall objective of Phase-I of our research, within the structure of the DOE CaBS (California Basin Study) program, has been to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro (SM/SP) Basins. During Phase-I, Drs. L.F. Small and C.-A. Huh were part of the same proposal, and so this progress report reflects our joint effect over the first three years of the CaBS program. One focus of our study has been to examine the role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight, with particular reference to C, N and certain radionuclides and trace metals. A second focus has been to examine these same radionuclides and trace metals in other important reservoirs (i.e., in seawater, sediment trap material and bottom sediments). Knowledge of the rates and routes of transfer of these nuclides and metals through these reservoirs should lead to a cogent model for these elements in SM/SP Basins. Our zooplankton C and N data, in conjunction with primary production, microbiological and sediment trap data from colleagues in the program, has led to a model of C and N cycling in the upper water column. Our sediment core data (chronologies and chemical profiles), together with sediment trap and benthic flux data, has resulted in the construction of an organic carbon mass balance in the SM/SP Basins. Both efforts are first attempts (see Appendices), but we have been heartened by the reasonableness of these first attempts after just three years of data. 29 refs., 13 figs., 5 tabs. (ERA citation 14:009630)