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Master Thesis

Évaluation de la fonctionnalité des corridors écologiques dans le bassin minier lensois par une approche multi-taxons

Abstract : Especially in urban areas, habitat fragmentation is one of the major causes of species decline. Ecological corridors as a tool for conservation to adress this threat to biodiversity has often been questioned. CorBaM project (ecological Corridors in the Mining Basin) aims at validating corridor effectiveness. Theoretical corridors have been defined thanks to GIS. To do so, least cost paths method has been used. The utilization of those connections rely on species, thus this is important to evaluate corridors functionality for most of them. Studied biological models in this study are birds, moths (Lepidoptera) and the European Hedgehog (Erinaceus europaeus). Used methods are respectively playback, Mark-Release-Recapture, and radiotracking. For birds, results show a special affinity for corridors for their movements through urban landscapes. Indeed, there are more positive responses in corridors than in matrix and they move more quickly. Moths’ movements are also enhanced by ecological corridor. Recapture rate, though it is very low, is higher in corridors than in urban matrix. Hedgehogs’ home ranges analysis on GIS shows that there should be a correlation between home range area and connectivity network level. To its conclusion, the CorBaM project will provide a GIS tool which can predict ecological corridors functionality in urban areas. It will provide the local authorities with a tool to help them landscaping in favour of biodiversity conservation.
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Master Thesis
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  • HAL Id : dumas-01267298, version 1



Nicolas Yakovleff. Évaluation de la fonctionnalité des corridors écologiques dans le bassin minier lensois par une approche multi-taxons. Sciences du Vivant [q-bio]. 2015. ⟨dumas-01267298⟩



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