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Utilisation des prédateurs supérieurs pour déterminer les zones d'importance pour la biodiversité : comparaison de différentes méthodes de mise en évidence de "hotspots"

Abstract : The numerous threats that marine environment face, coupled with the evidence for a global biodiversity loss during last decades have lead to an increasing need for setting up conservation measures. Particularly, delimiting Marine Protected Areas (MPAs) within the French Southern Territories, which are home to an exceptional biodiversity and extensive human activities through industrial fisheries, would be extremely beneficial for species conservation. In order to identify areas of ecological significance for biodiversity, which could be good MPA candidates, the use of distribution data from top marine predators seems to be ideal. Thanks to their high position in trophic network, they are likely to integrate lowers trophic level species distribution. Moreover, they are easy to observe trough at-sea observation campaigns, and easy to equip with telemetric devices thank to their central place foraging that lead them to return regularly to their colony during breeding season. Here, we analyse distribution data and develop habitat models from several top predators species in both subantarctic and tropical regions to highlight biodiversity hotspots within the French Southern Territories. This work could thus be use as a basis to define potential boundaries for a future MPA.
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https://tel.archives-ouvertes.fr/tel-01245419
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Submitted on : Thursday, December 17, 2015 - 10:53:06 AM
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Laurie Thiers. Utilisation des prédateurs supérieurs pour déterminer les zones d'importance pour la biodiversité : comparaison de différentes méthodes de mise en évidence de "hotspots". Sciences agricoles. Université de La Rochelle, 2014. Français. ⟨NNT : 2014LAROS025⟩. ⟨tel-01245419⟩

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