Blar i forfatter "Barbraud, Christophe"

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    • Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels 

      Sydeman, William J.; Schoeman, David S.; Thompson, Sarah Ann; Hoover, Brian A.; García-Reyes, Marisol; Daunt, Francis; Agnew, Philippa; Anker-Nilssen, Tycho; Barbraud, Christophe; Barrett, Robert; Becker, Peter H.; Bell, Elisabeth; Boersma, P. Dee; Bouwhuis, Sandra; Cannell, Belinda; Crawford, Robert J. M.; Dann, Peter; Delord, Karine; Elliot, Graeme; Erikstad, Kjell E.; Flint, Elizabeth; Furness, Robert W.; Harris, Michael P.; Hatch, Scott; Hilwig, Kara; Hinke, Jefferson T.; Jahncke, Jaime; Mills, James A.; Reiertsen, Tone Kristin; Renner, Heather; Sherley, Richard B.; Surman, Christopher; Taylor, Graeme; Thayer, Julie A.; Trathan, Phil N.; Velarde, Enriqueta; Walker, Kath; Wanless, Sarah; Warzybok, Pete; Watanuki, Yutaka (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-28)
      Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, ...

    • Temporal correlations among demographic parameters are ubiquitous but highly variable across species 

      Fay, Rémi; Hamel, Sandra; Van de Pol, Martijn; Gaillard, Jean Michel; Yoccoz, Nigel; Acker, Paul; Authier, Matthieu; Larue, Benjamin; Le Coeur, Christie; Macdonald, Kaitlin R.; Nicol-Harper, Alex; Barbraud, Christophe; Bonenfant, Christophe; Van Vuren, Dirk H.; Cam, Emmanuelle; Delord, Karine; Gamelon, Marlène; Moiron, Maria; Pelletier, Fanie; Teplitsky, Céline; Visser, Marcel E.; Wells, Caitlin P.; Wheelwright, Nathaniel T.; Jenouvrier, Stéphanie; Sæther, Bernt-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-24)
      Temporal correlations among demographic parameters can strongly influence population dynamics. Our empirical knowledge, however, is very limited regarding the direction and the magnitude of these correlations and how they vary among demographic parameters and species’ life histories. Here, we use long-term demographic data from 15 bird and mammal species with contrasting pace of life to quantify ...