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      Oceanographic drivers and mistiming processes shape breeding success in a seabird

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          Abstract

          Understanding the processes driving seabirds' reproductive performance through trophic interactions requires the identification of seasonal pulses in marine productivity. We investigated the sequence of environmental and biological processes driving the reproductive phenology and performance of the storm petrel ( Hydrobates pelagicus) in the Western Mediterranean. The enhanced light and nutrient availability at the onset of water stratification (late winter/early spring) resulted in annual consecutive peaks in relative abundance of phytoplankton, zooplankton and ichthyoplankton. The high energy-demanding period of egg production and chick rearing coincided with these successive pulses in food availability, pointing to a phenological adjustment to such seasonal patterns with important fitness consequences. Indeed, delayed reproduction with respect to the onset of water stratification resulted in both hatching and breeding failure. This pattern was observed at the population level, but also when confounding factors such as individuals' age or experience were also accounted for. We provide the first evidence of oceanographic drivers leading to the optimal time-window for reproduction in an inshore seabird at southern European latitudes, along with a suitable framework for assessing the impact of environmentally driven changes in marine productivity patterns in seabird performance.

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          Author and article information

          Journal
          Proc Biol Sci
          Proc. Biol. Sci
          RSPB
          royprsb
          Proceedings of the Royal Society B: Biological Sciences
          The Royal Society
          0962-8452
          1471-2954
          16 March 2016
          : 283
          : 1826
          : 20152287
          Affiliations
          [1 ] Department of Conservation Biology, Estación Biológica de Doñana (CSIC) , Sevilla, Spain
          [2 ] Laboratorio de SIG y Teledetección (LAST-EBD), Estación Biológica de Doñana (CSIC) , Sevilla, Spain
          [3 ] Population Ecology Group, IMEDEA , Miquel Marqués 21, Esporles, Spain
          [4 ] Marine Ecosystem Dynamics Group, IMEDEA , Miquel Marqués 21, Esporles, Spain
          Author notes
          Author information
          http://orcid.org/0000-0001-9670-486X
          http://orcid.org/0000-0003-3874-0461
          http://orcid.org/0000-0001-5435-2691
          http://orcid.org/0000-0002-6496-9182
          http://orcid.org/0000-0003-4782-3007
          http://orcid.org/0000-0002-4177-9749
          Article
          PMC4810842 PMC4810842 4810842 rspb20152287
          10.1098/rspb.2015.2287
          4810842
          26962134
          bcc64714-1c9b-4918-bb40-da62e1ca4f06
          © 2016 The Author(s)

          Published by the Royal Society. All rights reserved.

          History
          : 21 September 2015
          : 11 February 2016
          Funding
          Funded by: Spanish Government;
          Award ID: BOS2003-01960, CGL2006-04325/BOS, CGL2009-08298, CGL2013-42203-R, JCI-2011-09085
          Funded by: European Union;
          Award ID: FP7-PEOPLE-2009-IEF-MATERGLOBE
          Categories
          1001
          60
          14
          69
          Research Articles
          Custom metadata
          March 16, 2016

          trophic cascade,fitness,mistiming,phenology,reproductive timing,storm petrel

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