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    Trophic structure and community stability in an overfished ecosystem

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    Type
    Article
    Authors
    Utne-Palm, Anne Christine
    Salvanes, Anne Gro Vea
    Currie, Bronwen
    Kaartvedt, Stein cc
    Nilsson, Göran E.
    Braithwaite, Victoria A.
    Stecyk, Jonathan A W
    Hundt, Matthias
    Van Der Bank, Megan G.
    Flynn, Bradley A.
    Sandvik, Guro Katrine
    Klevjer, Thor Aleksander
    Sweetman, Andrew K.
    Brüchert, Volker
    Pittman, Karin A.
    Peard, Kathleen R.
    Lunde, Ida Gjervold
    Strandaba, R. A U
    Gibbons, Mark J.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Marine Science Program
    Date
    2010-07-15
    Online Publication Date
    2010-07-15
    Print Publication Date
    2010-07-16
    Permanent link to this record
    http://hdl.handle.net/10754/561493
    
    Metadata
    Show full item record
    Abstract
    Since the collapse of the pelagic fisheries off southwest Africa in the late 1960s, jellyfish biomass has increased and the structure of the Benguelan fish community has shifted, making the bearded goby (Sufflogobius bibarbatus) the new predominant prey species. Despite increased prédation pressure and a harsh environment, the gobies are thriving. Here we show that physiological adaptations and antipredator and foraging behaviors underpin the success of these fish. In particular, body-tissue isotope signatures reveal that gobies consume jellyfish and sulphidic diatomaceous mud, transferring "dead-end" resources back into the food chain.
    Citation
    Utne-Palm, A. C., Salvanes, A. G. V., Currie, B., Kaartvedt, S., Nilsson, G. E., Braithwaite, V. A., … Gibbons, M. J. (2010). Trophic Structure and Community Stability in an Overfished Ecosystem. Science, 329(5989), 333–336. doi:10.1126/science.1190708
    Sponsors
    We thank the crew of the G. O. Sars; F. Midtoy for assistance; and P. Ellitson, M. Hordnes, R. Jones, R. Amundsen and the rest of the scientific crew. We thank the National Research Foundation of South Africa, the Research Council of Norway, and our home institutions for funding and support. We thank BENEFIT (Benguela Environment Fisheries Interaction and Training), S. Sundby, D. C. Boyer, J. Otto Krakstad, and the crew of the research vessel Dr. Fridtjof Nansen for support with earlier goby cruises, laying the basis for the present study. We thank K. Helge Jensen for statistical support. We appreciate the comments on this manuscript by J. Giske, C. Jorgensen, M. P. Heino, and the anonymous reviewers. Care and handling of experimental animals were performed in accordance with institutional guidelines. J. A. W. S. was a postdoctoral researcher funded by the Natural Sciences and Engineering Reserach Council of Canada at the time when the research was conducted.
    Publisher
    American Association for the Advancement of Science (AAAS)
    Journal
    Science
    DOI
    10.1126/science.1190708
    PubMed ID
    20647468
    ae974a485f413a2113503eed53cd6c53
    10.1126/science.1190708
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Marine Science Program

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