Journal Article

The relationship between plankton, capelin, and cod under different temperature conditions

E.L. Orlova, V.D. Boitsov, A.V. Dolgov, G.B. Rudneva and V.N. Nesterova

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 62, issue 7, pages 1281-1292
Published in print January 2005 | ISSN: 1054-3139
Published online January 2005 | e-ISSN: 1095-9289 | DOI: http://dx.doi.org/10.1016/j.icesjms.2005.05.020
The relationship between plankton, capelin, and cod under different temperature conditions

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On the basis of data from cold (1982 and 1987) and warm summers (1983, 1984, 1990, and 1992), we explore the relationship between the phytoplankton bloom and the timing and intensity of the zooplankton bloom. In warm years, there is more overlap in the time between the zooplankton and the phytoplankton bloom. In northern areas (76–78°N) with seasonal ice, the phytoplankton bloom and reproductive processes in Calanus finmarchicus and Calanus glacialis continue well into August, evidenced by the presence of an abundance of nauplii and younger copepodites. We analyse feeding intensity of capelin and its distribution relative to food availability and capelin abundance. The extent to which feeding areas of cod and capelin, its major prey, overlap is subject to the abundance of these species, distribution of zooplankton, and sea temperature in a given year.

Keywords: Barents Sea; capelin; cod; copepods; zooplankton

Journal Article.  5735 words.  Illustrated.

Subjects: Environmental Science ; Marine and Estuarine Biology

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