期刊
SCIENCE
卷 334, 期 6063, 页码 1703-1706出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1212928
关键词
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资金
- Eur-Oceans Consortium
- Institut de Recherche pour le Developpement (IRD)
- Lenfest Forage Fish Task Force
- Mistra
- Sea Around Us Project
- South African Research Chair Initiative
- NERC [bas0100025] Funding Source: UKRI
- Natural Environment Research Council [bas0100025] Funding Source: researchfish
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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