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Global seabird response to forage fish depletion--one-third for the birds.
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Global seabird response to forage fish depletion--one-third for the birds.

Author: PM Cury Affiliation: Institut de Recherche pour le Développement, UMR EME-212, Centre de Recherche Halieutique Méditerranéenne et Tropicale, Avenue Jean Monnet, Sète Cedex, France. philippe.cury@ird.frIL BoydS BonhommeauT Anker-NilssenRJ CrawfordAll authors
Edition/Format: Article Article : English
Publication:Science (New York, N.Y.) 2011 Dec 23; 334(6063): 1703-6
Other Databases: WorldCatWorldCat
Summary:
Determining the form of key predator-prey relationships is critical for understanding marine ecosystem dynamics. Using a comprehensive global database, we quantified the effect of fluctuations in food abundance on seabird breeding success. We identified a threshold in prey (fish and krill, termed "forage fish") abundance below which seabirds experience consistently reduced and more variable productivity. This  Read more...
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Document Type: Article
All Authors / Contributors: PM Cury Affiliation: Institut de Recherche pour le Développement, UMR EME-212, Centre de Recherche Halieutique Méditerranéenne et Tropicale, Avenue Jean Monnet, Sète Cedex, France. philippe.cury@ird.fr; IL Boyd; S Bonhommeau; T Anker-Nilssen; RJ Crawford; RW Furness; JA Mills; EJ Murphy; H Osterblom; M Paleczny; JF Piatt; JP Roux; L Shannon; WJ Sydeman
ISSN:0036-8075
Language Note: English
Unique Identifier: 776261696
Awards:

Abstract:

Determining the form of key predator-prey relationships is critical for understanding marine ecosystem dynamics. Using a comprehensive global database, we quantified the effect of fluctuations in food abundance on seabird breeding success. We identified a threshold in prey (fish and krill, termed "forage fish") abundance below which seabirds experience consistently reduced and more variable productivity. This response was common to all seven ecosystems and 14 bird species examined within the Atlantic, Pacific, and Southern Oceans. The threshold approximated one-third of the maximum prey biomass observed in long-term studies. This provides an indicator of the minimal forage fish biomass needed to sustain seabird productivity over the long term.

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