Actions for Short term variation in the vertical distribution of copepods off the coast of northern Peru [electronic resource].

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Short term variation in the vertical distribution of copepods off the coast of northern Peru [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 28 : digital, PDF file
Additional Creators
Brookhaven National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Vertical profiles of chlorophyll a, oxygen, density and copepods were collected during November 1977 near 9/sup 0/S off Peru. The majority of three groups of copepod, the Oncaeidae, the Oithonidae and small calanoids, remained above the depth (approx. 30m) where concentrations of oxygen became less than 0.5 ml.l/sup -1/ both day and night. Centers of population of all three groups were in or below the pycnocline at all times. In daytime all three groups accumulated at depth, while at night all three groups showed some dispersion throughout the upper 30 m with statistically significant separation in the layers of Oncaeidae and small calanoids. Small calanoids were always higher in the water column than the Oncaeidae at night. The rather small, daily vertical excursions by the Oncaeidae and small calanoids exposed them to mean onshore, poleward flow by day and mean offshore, equatorward flow at night.
Report Numbers
E 1.99:bnl-27757
E 1.99: conf-800237-2
conf-800237-2
bnl-27757
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Note
Published through SciTech Connect.
04/01/1980.
"bnl-27757"
" conf-800237-2"
Smith, S L; Boyd, C M; Lane, P V.Z.
Funding Information
EY-76-C-02-0016
View MARC record | catkey: 14151719