TY  - JOUR
AU  - ROLLAND VIRGINIE, W. E. I. M. E. R. S. K. I. R. C. H. H. E. N. R. I.
PY  - 2010//
TI  - Relative influence of fisheries and climate on the demography of four albatross species
T2  - Glob Chang Biol
JO  - Global Change Biology
SP  - 1910
EP  - 1922
VL  - 16
IS  - 7
PB  - Blackwell Publishing Ltd
KW  - breeding success
KW  - climate
KW  - longlining
KW  - seabird
KW  - survival
KW  -
N2  - Worldwide ecosystems are modified by human activities and climate change. To be able to predict future changes, it is necessary to understand their respective role on population dynamics. Among the most threatened species are top predators because of their position in the food web. Albatross populations are potentially affected by both human activities, especially longline fisheries, and climatic fluctuations. Based on long-term data (19852006), we conducted through a comparative approach a demographic analysis (adult survival and breeding success) on four albatross species breeding on the Indian Ocean sub-Antarctic Islands to assess the relative impact of climate and fisheries during and outside the breeding season. The study revealed that adult survival of almost all species was not affected by climate, and therefore probably canalized against climatic variations, but was negatively affected by tuna longlining effort in three species. Breeding success was affected by climate, with contrasted effects between species, with Southern Oscillation Index having an impact on all species but one. Differences in demographic responses depended on the foraging zone and season. In order to predict population trajectories of seabirds such as albatrosses, our results show the importance of assessing the relative influence of fishing and climate impacts on demography.
SN  - 1365-2486
UR  - http://dx.doi.org/10.1111/j.1365-2486.2009.02070.x
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=3066), last updated on Tue, 09 Jul 2024 04:11:57 +0200
ID  - ROLLANDVIRGINIE2010
ER  -