Modelling the Distribution of the European Polecat Mustela Putorius in a Mediterranean Agricultural Landscape

نویسندگان

  • Frederico M. MESTRE
  • Joaquim P. FERREIRA
  • António MIRA
چکیده

RÉSUMÉ. — Modélisation de la distribution du Putois Mustela putorius dans un paysage agricole méditerranéen. — L’objectif de ce travail est d’évaluer la distribution du Putois dans une région du sud du Portugal, en identifi ant les descripteurs d’environnement dont il dépend et en comparant les résultats de deux méthodes différentes d’analyse de la distribution de l’espèce. La première de ces méthodes, la régression logistique (RL), utilise des donnés de présence/absence tandis que la seconde, l’analyse de facteurs de niche écologique (ecological niche factor analysis, ENFA), ne s’appuie que sur des données de présence. Les résultats montrent clairement qu’au Portugal, comme dans d’autres régions d’Europe, le Putois est très lié à des habitats humides et à une dense couverture végétale. Les descripteurs de l’environnement qui infl uencent le plus la distribution du Putois sont la longueur des cours d’eau, le nombre de touffes de broussailles, l’indice de diversité de Shannon-Wiener et le nombre de surfaces d’eau. Les méthodes utilisées montrent des différences statistiques dans leurs prévisions respectives, ainsi la RL prévoit une surface plus large que la ENFA pour la présence du putois.

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تاریخ انتشار 2007