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Abstract
Land-use change is a global threat to biodiversity, but how land-use change affects species beyond the direct effect of habitat loss remains poorly understood. We developed an approach to isolate and map the direct and indirect effects of agricultural expansion on species of conservation concern, using the threatened giant anteater (Myrmecophaga tridactyla) in the Gran Chaco as an example. We reconstructed anteater occupancy change between 1985 and 2015 [ver mas...]
dc.contributor.authorSemper Pascual, Asunción
dc.contributor.authorDecarre, Julieta
dc.contributor.authorBaumann, Matthias
dc.contributor.authorCamino, Micaela
dc.contributor.authorDi Blanco, Yamil
dc.contributor.authorGómez Valencia, Bibiana
dc.contributor.authorKuemmerle, Tobias
dc.date.accessioned2020-08-24T14:56:19Z
dc.date.available2020-08-24T14:56:19Z
dc.date.issued2020-08
dc.identifier.issn0960-3115
dc.identifier.issn1572-9710
dc.identifier.otherhttps://doi.org/10.1007/s10531-020-02042-1
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7760
dc.identifier.urihttps://link.springer.com/article/10.1007/s10531-020-02042-1
dc.description.abstractLand-use change is a global threat to biodiversity, but how land-use change affects species beyond the direct effect of habitat loss remains poorly understood. We developed an approach to isolate and map the direct and indirect effects of agricultural expansion on species of conservation concern, using the threatened giant anteater (Myrmecophaga tridactyla) in the Gran Chaco as an example. We reconstructed anteater occupancy change between 1985 and 2015 by fitting single-season occupancy models with contemporary camera-trap data and backcasting the models to 1985 and 2000 land-cover/use maps. Based on this, we compared the area of forest loss (direct effect of agricultural expansion) with the area where forests remained but occupancy still declined (indirect effect of agricultural expansion). Anteater occupancy decreased substantially since 1985, particularly after 2000 when agriculture expanded rapidly. Between 1985 and 2015, ~ 64,000 km2 of forest disappeared, yet occupancy declined across a larger area (~ 102,000 km2), extending far into seemingly untransformed habitat. This suggests that widespread sink habitat has emerged due to agricultural land-use change, and that species may lose their habitat through direct and indirect effects of agricultural expansion, highlighting the urgent need for broad-scale conservation planning in the Chaco. Appropriate management responses could proactively protect more habitat where populations are stable, and restore habitat or address causes of mortality in areas where declines occur. Our work also highlights how occupancy modelling combined with remote sensing can help to detect the direct and indirect effects of agricultural expansion, providing guidance for spatially targeting conservation strategies to halt extinctions.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSpringeres_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceBiodiversity and Conservation (2020)es_AR
dc.subjectDeforestaciónes_AR
dc.subjectDeforestationeng
dc.subjectUtilización de la Tierraes_AR
dc.subjectLand Useeng
dc.subjectModeloses_AR
dc.subjectModelseng
dc.subject.otherCambio de Uso del Sueloes_AR
dc.subject.otherLand-use Changeseng
dc.subject.otherModelado de Ocupaciónes_AR
dc.subject.otherOccupancy Modellingeng
dc.subject.otherRegión Chaqueñaes_AR
dc.titleUsing occupancy models to assess the direct and indirect impacts of agricultural expansion on species’ populationses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenInstituto de Recursos Biológicoses_AR
dc.description.filFil: Semper Pascual, Asunción. Humboldt-Universität zu Berlin. Geography Department; Alemaniaes_AR
dc.description.filFil: Decarre, Julieta. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentinaes_AR
dc.description.filFil: Baumann, Matthias. Humboldt-University Berlin. Geography Department; Alemaniaes_AR
dc.description.filFil: Camino, Micaela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología del Litoral. Laboratorio de Biología de la Conservación; Argentinaes_AR
dc.description.filFil: Di Blanco, Yamil. Universidad Nacional de Misiones. Facultad de Ciencias Forestales. Instituto de Biología Subtropical. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología Subtropical; Argentina. Asociación Civil Centro de Investigaciones del Bosque Atlántico; Argentinaes_AR
dc.description.filFil: Gomez Valencia, Bibiana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Grupo de Estudios de Sistemas Ecológicos en Ambientes Agrícolas; Argentina. Instituto de Investigaciones de Recursos Biológicos Alexander von Humboldt; Colombiaes_AR
dc.description.filFil: Kuemmerle, Tobias. Humboldt-University Berlin. Geography Department; Alemania. Humboldt-University Berlin. Integrative Research Institute for Transformations in Human Environment Systems; Alemaniaes_AR
dc.subtypecientifico


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