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Oceanic Distribution of Evadne in the Eastern Pacific (Cladocera)

Oceanic Distribution of Evadne in the Eastern Pacific (Cladocera) OCEANIC DISTRIBUTION OF EVADNE IN THE EASTERN PACIFIC (CLADOCERA) 1) BY ALAN R. LONGHURST Institute for Marine Environmental Research, Plymouth, Great-Britain & DON L. R. SEIBERT Institute of Marine Resources, University of California, La Jolla, California 92037, U.S.A. While examining samples from the multiple serial plankton recorder (Longhurst et al., 1966) from the "Eastropac" expeditions, we encountered several stations more than 1000 miles offshore at which abundant cladocerans occurred in the upper mixed layer. Earlier reviews (e.g. Ramner, 1933), and recent general texts on plankton ecology (e.g. Wickstead, 1965) have suggested that cladocerans are, in general, neritic organisms, and since our samples included stations in the South Pacific central gyre, we were prompted to survey, in a rather summary fashion, the nature of the distribution of Evadne in the eastern part of the Pacific Ocean. The samples examined were taken at 1011 stations, of which 927 were from the "Eastropac" expeditions, from the American coast out to about 12 5 °W, while the remaining 84 stations were selected from earlier cruises ("Tethys", "Down- wind", "Norpac", "Capricorn", etc.) to give coverage farther to the west, as far as 170°W. The samples came, for the most part, from simple non-closing nets http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crustaceana Brill

Oceanic Distribution of Evadne in the Eastern Pacific (Cladocera)

Crustaceana , Volume 22 (3): 10 – Jan 1, 1972

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References (3)

Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0011-216X
eISSN
1568-5403
DOI
10.1163/156854072x00525
Publisher site
See Article on Publisher Site

Abstract

OCEANIC DISTRIBUTION OF EVADNE IN THE EASTERN PACIFIC (CLADOCERA) 1) BY ALAN R. LONGHURST Institute for Marine Environmental Research, Plymouth, Great-Britain & DON L. R. SEIBERT Institute of Marine Resources, University of California, La Jolla, California 92037, U.S.A. While examining samples from the multiple serial plankton recorder (Longhurst et al., 1966) from the "Eastropac" expeditions, we encountered several stations more than 1000 miles offshore at which abundant cladocerans occurred in the upper mixed layer. Earlier reviews (e.g. Ramner, 1933), and recent general texts on plankton ecology (e.g. Wickstead, 1965) have suggested that cladocerans are, in general, neritic organisms, and since our samples included stations in the South Pacific central gyre, we were prompted to survey, in a rather summary fashion, the nature of the distribution of Evadne in the eastern part of the Pacific Ocean. The samples examined were taken at 1011 stations, of which 927 were from the "Eastropac" expeditions, from the American coast out to about 12 5 °W, while the remaining 84 stations were selected from earlier cruises ("Tethys", "Down- wind", "Norpac", "Capricorn", etc.) to give coverage farther to the west, as far as 170°W. The samples came, for the most part, from simple non-closing nets

Journal

CrustaceanaBrill

Published: Jan 1, 1972

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