Regeneration of nutrients by zooplankton and fish off northwest Africa

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6789961

Smith, S L; Whitledge, T E

Data were collected during cruises JOINT I of the Coastal Upwelling Ecosystem Analysis program in 1974 and cruise Gibraltar 75 of the CNEXO program in 1975. The ratios among the release of phosphate, silicate, and ammonia for zooplankton and for nekton were calculated. The ratios for the zooplankton were surprisingly constant across the shelf considering that both biomass and rate were varying in the estimations of regeneration by zooplankton. Data indicated that zooplankton were more significant in the nitrogen dynamics of this upwelling than were fish. It is noted that in an upwelling ecosystem, where diatoms dominate the phytoplankton and the possibility of silicate limitation exists, nekton regenerated no silicate while zooplankton regenerated silicate at a rate that was nearly constant across the shelf. (HLW)

• Research Organization: Dalhousie Univ., Halifax, Nova Scotia (Canada). Inst. of Oceanography; Brookhaven National Lab., Upton, N.Y. (USA)
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 6789961
• Report Number(s): BNL-24177; CONF-780448-1
• Country of Publication: United States
• Language: English

Related Subjects

520100 -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
550500* -- Metabolism
59 BASIC BIOLOGICAL SCIENCES
AMMONIA
ANIMALS
AQUATIC ECOSYSTEMS
AQUATIC ORGANISMS
BIOLOGICAL RECOVERY
BIOLOGICAL REGENERATION
BIOMASS
CRYOGENIC FLUIDS
DATA ANALYSIS
DATA COMPILATION
ECOSYSTEMS
ELEMENTS
ENERGY SOURCES
FISHES
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
METABOLISM
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
NUTRIENTS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYTOPLANKTON
PLANKTON
RECOVERY
RENEWABLE ENERGY SOURCES
SILICATES
SILICON COMPOUNDS
VERTEBRATES
ZOOPLANKTON