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Global phenological insensitivity to shifting ocean temperatures among seabirds
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Number of Authors: 882018 (English)In: Nature Climate Change, ISSN 1758-678X, E-ISSN 1758-6798, Vol. 8, no 4, p. 313-318Article in journal, Letter (Refereed) Published
Abstract [en]

Reproductive timing in many taxa plays a key role in determining breeding productivity(1), and is often sensitive to climatic conditions(2). Current climate change may alter the timing of breeding at different rates across trophic levels, potentially resulting in temporal mismatch between the resource requirements of predators and their prey(3). This is of particular concern for higher-trophic-level organisms, whose longer generation times confer a lower rate of evolutionary rescue than primary producers or consumers(4). However, the disconnection between studies of ecological change in marine systems makes it difficult to detect general changes in the timing of reproduction(5). Here, we use a comprehensive meta-analysis of 209 phenological time series from 145 breeding populations to show that, on average, seabird populations worldwide have not adjusted their breeding seasons over time (-0.020 days yr(-1)) or in response to sea surface temperature (SST) (-0.272 days degrees C-1) between 1952 and 2015. However, marked between-year variation in timing observed in resident species and some Pelecaniformes and Suliformes (cormorants, gannets and boobies) may imply that timing, in some cases, is affected by unmeasured environmental conditions. This limited temperature-mediated plasticity of reproductive timing in seabirds potentially makes these top predators highly vulnerable to future mismatch with lower-trophic-level resources(2).

Place, publisher, year, edition, pages
2018. Vol. 8, no 4, p. 313-318
National Category
Earth and Related Environmental Sciences Social and Economic Geography
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URN: urn:nbn:se:su:diva-156053DOI: 10.1038/s41558-018-0115-zISI: 000429194600018OAI: oai:DiVA.org:su-156053DiVA, id: diva2:1210071
Available from: 2018-05-25 Created: 2018-05-25 Last updated: 2018-05-25Bibliographically approved

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Olsson, Olof
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Stockholm Resilience Centre
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