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Title

Climate, fishing, and fluctuations of sardine and anchovy in the California Current

Publication Year

2013

Author(s)
  • Lindegren, Martin
  • Checkley, David M., Jr.
  • Rouyer, Tristan
  • MacCall, Alec D.
  • Stenseth, Nils Chr.
Source
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Volume: 110 Issue: 33 Pages: 13672-13677 Published: 2013
ISSN
0027-8424
Abstract

Since the days of Elton, population cycles have challenged ecologists and resource managers. Although the underlying mechanisms remain debated, theory holds that both density-dependent and density-independent processes shape the dynamics. One striking example is the large-scale fluctuations of sardine and anchovy observed across the major upwelling areas of the world. Despite a long history of research, the causes of these fluctuations remain unresolved and heavily debated, with significant implications for fisheries management. We here model the underlying causes of these fluctuations, using the California Current Ecosystem as a case study, and show that the dynamics, accurately reproduced since A.D. 1661 onward, are explained by interacting density-dependent processes (i.e., through species-specific life-history traits) and climate forcing. Furthermore, we demonstrate how fishing modifies the dynamics and show that the sardine collapse of the 1950s was largely unavoidable given poor recruitment conditions. Our approach provides unique insight into the origin of sardine-anchovy fluctuations and a knowledge base for sustainable fisheries management in the California Current Ecosystem and beyond.

Author Keyword(s)
  • species replacement
  • population modeling
  • climate change
  • ecosystem-based management
KeyWord(s) Plus
  • PACIFIC SARDINE
  • NORTHERN ANCHOVY
  • BALTIC COD
  • POPULATIONS
  • RECRUITMENT
  • COLLAPSE
  • VARIABILITY
  • ECOSYSTEMS
  • REGIME
  • STOCK
ESI Discipline(s)
  • Multidisciplinary
Web of Science Category(ies)
  • Multidisciplinary Sciences
Adress(es)

[Lindegren, Martin; Checkley, David M., Jr.] Univ Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92093 USA; [Rouyer, Tristan] IFREMER, UMR 212 EME Ecosyst Marins Exploites, F-34200 Sete, France; [MacCall, Alec D.] NOAA, SW Fisheries Sci Ctr, Natl Marine Fisheries Serv, Santa Cruz, CA 95060 USA; [Stenseth, Nils Chr.] Univ Oslo, Dept Biol Sci, CEES, N-0316 Oslo, Norway

Reprint Adress

Lindegren, M (reprint author), Univ Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92093 USA.

Country(ies)
  • France
  • Norway
  • United States
CNRS - Adress(es)

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Accession Number
WOS:000323069200095
uid:/J1V3CQD4
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