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Abstract
In South American highland forests, domestic grazing can cause major changes in forest structure and soil quality thereby altering resources available to avian communities. However, the consequences of changes in variability in plant growth forms after disturbance are little known. Understanding forest succession effects on avifauna is critical though, given that area in secondary forests is expected to increase in the future. We sampled bird communities [ver mas...]
dc.contributor.authorBellis, Laura Marisa
dc.contributor.authorPidgeon, Anna Michle
dc.contributor.authorAlcántara, Camilo
dc.contributor.authorDardanelli, Sebastian
dc.contributor.authorRadeloff, Volker C.
dc.date.accessioned2018-12-21T13:34:33Z
dc.date.available2018-12-21T13:34:33Z
dc.date.issued2015-08-01
dc.identifier.issn0378-1127
dc.identifier.otherhttps://doi.org/10.1016/j.foreco.2015.03.047
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0378112715001875
dc.identifier.urihttp://hdl.handle.net/20.500.12123/4135
dc.description.abstractIn South American highland forests, domestic grazing can cause major changes in forest structure and soil quality thereby altering resources available to avian communities. However, the consequences of changes in variability in plant growth forms after disturbance are little known. Understanding forest succession effects on avifauna is critical though, given that area in secondary forests is expected to increase in the future. We sampled bird communities at 172 sample points in Polylepis shrublands and forests patches in Argentina. For each of these points, we calculated vegetation variables (NDVI, NDVI texture indices), landscape pattern variables (patch area and connectivity), and human disturbance variables (erosion, distances to settlements and roads), based on a Landsat 5 TM image, a local land cover map, and topography (slope and altitude) from a Digital Elevation Model. Bird communities in Polylepis forests included approximately twice as many species and double the abundance than those in shrublands. Species composition strongly differed between the two growth forms as well, birds that use the ground vegetation to nest and forage were less abundant in shrubland patches, air foragers were also less abundant in shrubland patches. Soil erosion, proximity to human settlements and forest isolation were the best predictors of bird richness and abundance in Polylepis vegetation patches. Abundance of birds that use the ground for nesting and foraging were negatively related to soil erosion. We concluded that Polylepis avifauna communities are primarily influenced by human impact on soils rather than by vegetation structural characteristics. Polylepis vegetation restoration and reduction of livestock grazing would likely reduce soil erosion rates, promote natural regeneration, increase patch connectivity and enhance microhabitat conditions for avifauna in high-altitude Polylepis forests and shrublands.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceForest Ecology and Management 349 : 85-93 (August 2015)es_AR
dc.subjectPájaroses_AR
dc.subjectBirdseng
dc.subjectErosiónes_AR
dc.subjectErosioneng
dc.subjectBosqueses_AR
dc.subjectForestseng
dc.subjectPastoreoes_AR
dc.subjectGrazingeng
dc.subjectTeledetecciónes_AR
dc.subjectRemote Sensingeng
dc.subjectTierras de Matorrales_AR
dc.subjectScrublandseng
dc.subject.otherAveses_AR
dc.subject.otherAmérica del Sures_AR
dc.titleInfluences of succession and erosion on bird communities in a South American highland wooded landscapees_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Paranáes_AR
dc.description.filFil: Bellis, Laura Marisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentinaes_AR
dc.description.filFil: Pidgeon, Anna Michle. University of Wisconsin‐Madison. Department of Forest and Wildlife Ecology. SILVIS Lab; Estados Unidoses_AR
dc.description.filFil: Alcántara, Camilo. University of Wisconsin‐Madison. Department of Forest and Wildlife Ecology. SILVIS Lab; Estados Unidos. Universidad de Guadalajara. Departamento de Ecología y Recursos Naturales, Centro Universitario Costa Sur; Mexicoes_AR
dc.description.filFil: Dardanelli, Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentinaes_AR
dc.description.filFil: Radeloff, Volker C. University of Wisconsin‐Madison. Department of Forest and Wildlife Ecology. SILVIS Lab; Estados Unidoses_AR
dc.subtypecientifico


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