Combining habitat suitability modelling and spatial graph for conservation planning
| Autor: | Duflot, R., Bergès, L., Avon, C., Roche, P. |
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| Přispěvatelé: | Ecosystèmes méditerranéens et risques (UR EMAX), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Irstea, Import Ws |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | IUFRO-Landscape Ecology Conference IUFRO-Landscape Ecology Conference, Aug 2015, Tartu, France. 34 p |
| Popis: | IUFRO - Landscape Ecology Conference, Tartu, EST, 23-/08/2015 - 30/08/2015; International audience; Landscape connectivity plays an important role in biodiversity conservation. Hence, the maintenance of ecological networks has been promoted in conservation planning from continental to local spatial scales. We propose a methodological framework combining habitat suitability and spatial graph modelling to identify and prioritize areas that contribute to ecological networks at meso-scale. Within a 200km² study area, located in south-eastern France, we collected environmental data (topography, land cover and vegetation type) and recorded bird, plant and butterfly species in 160 plots. For each taxonomic group, we selected a set of species with different ecological requirements and dispersal capacities. For each species, we used MaxEnt to model the ecological niche and the presence probability map over the whole study area. From these maps, we (i) identified suitable habitat patches and (ii) estimated landscape resistance to species movements. Then, spatial graphs were built in Graphab using habitat patches as nodes and least-cost paths derived from landscape resistances as links between these nodes. The contribution of each node and link to habitat network connectivity was estimated. Finally, all species graphs were combined to generate a multi-species ecological network diagnosis. |
| Databáze: | OpenAIRE |
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