Eiders, nutrients and eagles: Bottom-up and top-down population dynamics in a marine bird_dataset

Federico Morelli, Karsten Laursen, Marek Svitok, Yanina Benedetti & Anders Pape Møller
The main objective of this long-term study (1978-2016) was to find the underlying factors behind the declining trends of eider Somateria mollissima in the Baltic/Wadden Sea. Specifically, we aimed at quantifying the bottom-up effect of nutrients, through mussel stocks, on reproduction and abundance of eider, and the top-down effects caused by white-tailed eagle Haliaeetus albicilla predation. Bottom-up effects increase marine primary productivity with subsequent effects on food availability for a major mussel predator. Top-down effects...

Registration Year

  • 2021
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Resource Types

  • Dataset
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Affiliations

  • Technical University of Zvolen
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  • Ecologie, Systématique et Evolution
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  • Aarhus University
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  • Czech University of Life Sciences Prague
    1