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Marine Ecosystems and Climate VariationThe North Atlantic: A Comparative Perspective$
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Nils Chr. Stenseth, Geir Ottersen, James W. Hurrell, and Andrea Belgrano

Print publication date: 2005

Print ISBN-13: 9780198507499

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780198507499.001.0001

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The Responses of Fish Populations to Ocean Climate Fluctuations

The Responses of Fish Populations to Ocean Climate Fluctuations

(p.73) CHAPTER 6 The Responses of Fish Populations to Ocean Climate Fluctuations
Marine Ecosystems and Climate Variation

Geir Ottersen

Jürgen Alheit

Ken Drinkwater

Kevin Friedland

Eberhard Hagen

Nils Chr. Stenseth

Oxford University Press

Understanding how climate variability affects fish and fisheries and how the effects differ between species is of paramount importance when trying to predict the potential impacts of anthropogenically introduced climate change. This chapter shows how climate variability may influence North Atlantic fish populations by affecting spawning and reproduction, abundance and recruitment, individual growth rates, distribution and migration, natural mortality, and catchability and availability to fisheries. Although, they are principally derived from the northwest Atlantic Ocean, the results are representative of many species around the world. The impact of climate on some of the most important fish species in the North Atlantic: the demersal cod, the pelagic herring, sardines, and the anadromous salmon, is discussed.

Keywords:   climate change, climate variability, North Atlantic, salmon, herring, sardines

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