James P. W. Robinson, Maria Dornelas and Alfredo F. Ojanguren Interspecific synchrony of seabird population growth rate and breeding success Ecology and Evolution 3
Species covariation reduces the portfolio effect and destabilizes communities. We present evidence of synchronous responses of a seabird group to environmental variability, and describe a novel method for examining pronounced fluctuations in multiple species demography. Six seabird species experienced “exceptional” years in their population growth rate and breeding success, driven by variation in lagged sea surface temperature. Understanding such extreme responses to environmental variation informs both our understanding of community dynamics and of the future impacts of global climate change.
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