A validation procedure for landscape connectivity approaches: evaluation of the accuracy of ecological corridor locations
| Autor: | Etienne Lalechère, Laurent Bergès |
|---|---|
| Přispěvatelé: | Laboratoire des EcoSystèmes et des Sociétés en Montagne (UR LESSEM), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Ecological Society of America Annual Meeting Ecological Society of America Annual Meeting, Aug 2021, Long Beach, United States |
| Popis: | ContextConnectivity conservation analysis is based on a wide range of approaches designed to locate key ecological corridors in order to maintain multispecies flows. However, the lack of validation procedures with accessible data prevents from selecting the most accurate approach.ObjectivesWe propose a new validation procedure to evaluate the accuracy of ecological corridor locations in landscape connectivity approaches. We applied this procedure to compare three modelling approaches and select the most accurate. MethodsOur procedure validates ecological corridor tracks with independent presence-only data, under the hypothesis that species should be present within or near the corridors (according to resistance distance) if the corridors have been correctly modelled. We applied Maxent and circuit theory to locate ecological corridors for forest bird species in a rural landscape following three approaches based on land cover, umbrella species and multispecies presence data. We compared the proportion of overlaid corridors among the three approaches, and selected the most accurate one according to our validation index.ResultsThe corridors modelled from species presence data (umbrella and multispecies approaches) were more consistent than the habitat-based (land cover) approach. The multispecies approach was the most accurate while habitat approach was the least accurate in locating ecological corridors.ConclusionsOur procedure can be used to: (1) evaluate the accuracy of the location of ecological corridors, (2) select the best approach to locate ecological corridors, and (3) validate the underlying assumptions of landscape connectivity approaches (e.g. dispersal and matrix resistance values). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|