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Demographic response of a population of white-chinned petrels Procellaria aequinoctialis to climate and longline fishery bycatch ArchiMer
Barbraud, Christophe; Marteau, Cedric; Ridoux, Vincent; Delord, Karine; Weimerskirch, Henri.
1. Fisheries can affect non-target species through bycatch, and climate change may act simultaneously on their population dynamics. Estimating the relative impact of fisheries and climate on non-target species remains a challenge for many populations because the spatio-temporal distribution of individuals remains poorly known and available demographic information is incomplete. <br>2. We used population survey data, capture-mark-recapture methods, population modelling and the demographic invariant method to investigate the effects of climate and fisheries on the demography of a predator species affected by bycatch. These complementary approaches were used to help account for different sources of uncertainty. <br>3. The white-chinned petrel...
Tipo: Text Palavras-chave: Survival; Demographic invariants; El Nino; Longline fishing; Population model; Procellaria aequinoctialis; Recruitment.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/00000/11048/11321.pdf
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Status and trends of albatrosses in the French Southern Territories, Western Indian Ocean ArchiMer
Weimerskirch, Henri; Delord, Karine; Barbraud, Christophe; Le Bouard, Fabrice; Ryan, Peter G.; Fretwell, Peter; Marteau, Cedric.
Today albatrosses are threatened worldwide, especially by fishing activities, and many populations are currently in decline. Albatrosses breeding at the French Southern Territories in the south-western Indian Ocean, on the Crozet, Kerguelen and Saint-Paul–Amsterdam island archipelagos, are monitored regularly. This monitoring has been based on a sample of species and sites, and there was a need for an assessment of the population trends for all species at each site. During the past 3 years most populations have been surveyed, allowing an assessment of the trends of albatrosses breeding at the archipelagos of the French Southern Territories over the past 40 years. Wandering Albatrosses show similar trends at all sites within the Crozet and Kerguelen...
Tipo: Text Palavras-chave: Crozet; Kerguelen; Amsterdam; Fisheries; Monitoring.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55192/83479.pdf
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