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Title: (The role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight): California Basin Study: DOE west coast basin program: Progress report 4, (June 1987--June 1988)

Abstract

The overall objective of our research, within the structure of the DOE CaBS (California Basin Study) program, is to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro Basins. One focus of our study is to examine the role of zooplankton and micronekton 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 is to examine these same radionuclides and trace metals in other reservoirs besides the zooplankton (i.e., in seawater, sediment trap material and bottom sediments). Knowledge of the rates, routes and reservoirs of these nuclides and metals should lead to a cogent model for these elements in Santa Monica/San Pedro Basins. Our zooplankton C and N data, in conjunction with primary production, microbiological and sediment flux data from colleagues in the program, should also lead ultimately to a model of C and N cycling in the basins. 33 refs., 13 figs., 7 tabs.

Authors:
;
Publication Date:
Research Org.:
Oregon State Univ., Corvallis (USA). Coll. of Oceanography
OSTI Identifier:
6746488
Report Number(s):
DOE/ER/60340-4
ON: DE89002260
DOE Contract Number:
FG05-85ER60340
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CALIFORNIA; COASTAL WATERS; ENVIRONMENTAL TRANSPORT; BASELINE ECOLOGY; ZOOPLANKTON; FECES; BIOMASS; BUILDUP; CARBON CYCLE; CRUSTACEANS; LEAD 210; METALS; MINERAL CYCLING; MINERALIZATION; MINERALOGY; NITROGEN CYCLE; NUTRIENTS; PROGRESS REPORT; RADIOISOTOPES; SEDIMENTS; SPATIAL DISTRIBUTION; THORIUM 228; THORIUM 234; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; ANIMALS; AQUATIC ORGANISMS; ARTHROPODS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOLOGICAL MATERIALS; BIOLOGICAL WASTES; DAYS LIVING RADIOISOTOPES; DISTRIBUTION; DOCUMENT TYPES; ECOLOGY; ELEMENTS; ENERGY SOURCES; EVEN-EVEN NUCLEI; FEDERAL REGION IX; HEAVY NUCLEI; INVERTEBRATES; ISOTOPES; LEAD ISOTOPES; MASS TRANSFER; MATERIALS; NORTH AMERICA; NUCLEI; PLANKTON; RENEWABLE ENERGY SOURCES; SURFACE WATERS; THORIUM ISOTOPES; USA; WASTES; YEARS LIVING RADIOISOTOPES 520500* -- Environment, Aquatic-- Site Resource & Use Studies-- (-1989)

Citation Formats

Small, L.F., and Huh, Chih-An. (The role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight): California Basin Study: DOE west coast basin program: Progress report 4, (June 1987--June 1988). United States: N. p., 1988. Web.
Small, L.F., & Huh, Chih-An. (The role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight): California Basin Study: DOE west coast basin program: Progress report 4, (June 1987--June 1988). United States.
Small, L.F., and Huh, Chih-An. 1988. "(The role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight): California Basin Study: DOE west coast basin program: Progress report 4, (June 1987--June 1988)". United States. doi:.
@article{osti_6746488,
title = {(The role of zooplankton in the cycling and remineralization of chemical materials in the Southern California Bight): California Basin Study: DOE west coast basin program: Progress report 4, (June 1987--June 1988)},
author = {Small, L.F. and Huh, Chih-An},
abstractNote = {The overall objective of our research, within the structure of the DOE CaBS (California Basin Study) program, is to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro Basins. One focus of our study is to examine the role of zooplankton and micronekton 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 is to examine these same radionuclides and trace metals in other reservoirs besides the zooplankton (i.e., in seawater, sediment trap material and bottom sediments). Knowledge of the rates, routes and reservoirs of these nuclides and metals should lead to a cogent model for these elements in Santa Monica/San Pedro Basins. Our zooplankton C and N data, in conjunction with primary production, microbiological and sediment flux data from colleagues in the program, should also lead ultimately to a model of C and N cycling in the basins. 33 refs., 13 figs., 7 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 6
}

Technical Report:
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  • 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 Southernmore » 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.« less
  • A Progress Report on Grant FG05-85ER60340 has already been submitted to DOE, and is appended here. The appended report covers much of the work completed during the current contract period. Work on the just-completed May 1986 cruise samples is just beginning at the time of writing. Sediment traps deployed at two locations in Santa Monica Basin in October 1985 were recovered in February 1986. The traps have sequentially rotating cups set to collect material for 14 days each during the deployment period. We have finished radiochemical analyses on the sediment trap samples collected on the February 1986 Cruise. Pellet productionmore » rates for salps and euphausiids were reported earlier. The February cruise was principally a hydrographic and trap recovery cruise, and there was no time for pellet production rate experiments. Thus, all the February hauls are being analyzed to assess diel biomass estimates of selected size classes of zooplankton in the vicinity of the traps. 5 tabs.« less
  • The overall objective of our research is to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro Basins. One focus of our study is to examine the role of zooplankton and micronekton 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 is to examine these same radionuclides and trace metals in other important reservoirs. Knowledge of the rates and routes of transfer of these nuclides and metals through these reservoirsmore » should lead to a cogent model for these elements in SM/SP Basins. Our zooplankton C and N data, should lead ultimately to a model of C and N cycling in the upper water column. Our sediment core data will lead to the construction of mass balances and budgets in the SM/SP Basins. 4 refs.« less
  • The overall objective of our research is to understand the transport pathways and mass balances of selected metabolically active and inactive chemical species in the Santa Monica/San Pedro Basins. One focus is to examine the role of zooplankton and micronekton 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 is to examine these same radionuclides and trace metals in other reservoirs besides the zooplankton (i.e., in seawater, sediment trap material and bottom sediments). Knowledge of the rates, routes and reservoirs ofmore » these nuclides and metals should lead to a cogent model for these elements in Santa Monica/San Pedro Basins. 28 refs., 13 figs., 7 tabs.« less
  • During this period we have executed three CTD/oxygen/transmission surveys, during 1-7 Feb (SHELF 1), 5-12 April (SHELF 2), and 1-9 Oct (SHELF 3). Data were obtained at 78, 70, and 109 stations, respectively. Calibration of these data sets has been completed and processing has been initiated. The SHELF 2 and SHELF 3 cruises also included shipboard acoustic Doppler current surveys. Cruise reports for the three cruises are appended. During February we successfully deployed several moorings in an array designed to monitor the important seasonal transition between winter and spring (TRANSITION). In April, additional moorings were added to the array tomore » provide a detailed description of circulation over the Santa Monica shelf (SHELF). Rationale for and details of these experiments are described below. All moorings except one and a half were successfully fishermen earlier in the season and were returned to us intact. One mooring in the October cruise failed to release and was recovered via a submersible the next day. The malfunction was due to the fact that the release mechanism of the mooring, which had been deployed for nine months in 30 m of water, was jammed with rock scallopsexclamation 9 refs., 10 figs., 8 tabs.« less