Sélection de l'habitat par un carnivore en danger, le diable de Tasmanie (Sarcophilus harrisii), dans un paysage fragmenté pour l'agriculture

Abstract : Previous studies have been conducted on the impact of landscape modifications on carnivorous species, but none has related landscape and biological attributes. Many landscapes are currently fragmented and replaced by plantations or crops. We tried to provide new informations concerning species and landscape attributes that induce vulnerability to extinction for carnivore populations, by studying the abundance and distribution of the Tasmanian devil, which is thought to be enhanced by landscape fragmentation. Our results showed that devils are negatively influenced by fragmentation at local scales, and positively at the landscape scale, demonstrating that the species is enhanced by fragmentation, but still needs native vegetation patches to hide, hunt and raise the young, maintaining processes that are essential to the persistence of a population. This includes a threshold in the degree of fragmentation implying the conservation of a minimal area of native vegetation for the species. This study highlights some biological traits of the species, which may explain its positive response to fragmentation, and is a good example for the study of all carnivore species.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/SCDSCI_M_2011_KRAENNER_CLAIRE.pdf
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https://hal.univ-lorraine.fr/hal-01789084
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Submitted on : Wednesday, May 9, 2018 - 5:00:42 PM
Last modification on : Friday, September 14, 2018 - 1:01:46 AM

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Claire Kraenner. Sélection de l'habitat par un carnivore en danger, le diable de Tasmanie (Sarcophilus harrisii), dans un paysage fragmenté pour l'agriculture. Sciences de l'environnement. 2011. ⟨hal-01789084⟩

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