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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Sardine and anchovy regime fluctuations of abundance in four regions of the world oceans: a workshop report
Fisheries Oceanography, Volume 1, No. 4, Year 1992
Notification
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Description
Regimes of high abundance of sardine (Sardinops sagax and Sardina pilchardus) have alternated with regimes of high abundance of anchovy (Engraulis spp.) in each of the five regions of the world where these taxa co‐occur and have been extensively fished. When one taxon has been plentiful, the other has usually been at a reduced level of abundance, and vice versa. Changes in the four heavily fished regions that support S. sagax–the Japanese, Californian, Humboldt, and Benguela systems–from a regime dominated by one taxon to a high level of abundance of the other have occurred more or less simultaneously. In the Pacific Ocean, sardines have tended to increase during periods of increasing global air and sea temperatures and anchovies to decrease. The Japanese system is dominated by sardines to a greater extent than the other systems, and sardines off Japan appear to increase as the Kuroshio Current cools. At the eastern edge of the Pacific Ocean, sardines colonize cooler areas during periods of warming. The Benguela system is out of phase with the three Pacific systems. The four systems all appeared to be in a state of flux in the 1980s. Increased abundance of the subdominant taxon is often one of the first signs of change. Sardines are relatively sedentary in refuge areas when scarce but change behavior to become highly migratory and colonize cooler areas when abundant. Anchovies, by contrast, expand around a fixed geographic center. Copyright © 1992, Wiley Blackwell. All rights reserved
Authors & Co-Authors
Lluch-Belda, Daniel
Mexico, La Paz
Centro de Investigaciones Biológicas de Baja California
Schwartzlose, R. A.
Mexico, La Paz
Centro de Investigaciones Biológicas de Baja California
United States, La Jolla
Scripps Institution of Oceanography
Serra, Rodolfo
Chile, Valparaiso
Instituto de Fomento Pesquero
Parrish, Richard H.
United States, Monterey
Southwest Fisheries Science Center
Kawasaki, T.
Taiwan, Keelung
National Taiwan Ocean University
Hedgecock, Dennis
United States, Bodega Bay
Bodega Marine Laboratory
Crawford, Robert J.M.
South Africa, Cape Town
Marine and Coastal Management
Statistics
Citations: 225
Authors: 7
Affiliations: 7
Identifiers
Doi:
10.1111/j.1365-2419.1992.tb00006.x
ISSN:
10546006
e-ISSN:
13652419
Research Areas
Environmental