Combining spatial modeling tools and biological data for improved multispecies assessment in restoration areas
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- handle: 10670/1.78wc0y
- halshs: halshs-02913473
- doi: 10.1016/j.biocon.2020.108713
- PII: S0006-3207(20)30771-0
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biocon.2020.108713
http://creativecommons.org/licenses/by-nc/ , info:eu-repo/semantics/OpenAccess
Mots-clés
Multispecies approach Amphibians Habitat suitability models Landscape graphs Functional connectivity Biodiversity offsetSujets proches
Speciation (Biology)Citer ce document
Céline Clauzel et al., « Combining spatial modeling tools and biological data for improved multispecies assessment in restoration areas », HAL-SHS : géographie, ID : 10.1016/j.biocon.2020.108713
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Résumé
Habitat restoration is one of the actions to reduce landscape fragmentation by promoting connectivity and thus biodiversity. But knowing where to implement these habitats is a major issue and planners lack guidance for answering this question, in particular when it involves multiple species and over a large area. We proposed to combine biological data, habitat suitability models and spatial graphs to improve multiscale and multispecies connectivity in Ile-de-France, a highly artificialized region of 12,000 km2. The framework consisted of i) modeling habitat suitability for eight pond-dwelling species (Alytes obstetricans, Bufo bufo, Epidalea calamita, Hyla arborea, Rana temporaria, Salamandra salamandra, Triturus cristatus, and Natrix natrix), ii) modeling the ecological network for each species, iii) prioritizing each sampling point depending on the gain in connectivity if a new pond was created there and iv) combining single-species results to identify the areas that could improve multispecies connectivity. The multivariate statistical analysis revealed that transitional forest environments appeared to be the most strategic areas for improving multispecific connectivity (at least for 5 species). Targeted addition of habitat within an ecological network can increase habitat density in deficient areas and reconnect network sub-parts. This approach is therefore promising to guide conservation actions and “no net loss” biodiversity measures, especially the final stage of offset in the mitigation hierarchy.