Habitat-specific vegetation and seasonal drivers of bird community structure and function in southern Patagonian forests

摘要: Biodiversity conservation requires knowledge about the factors that influence structure and function of biotic assemblages. In southern Patagonian Nothofagus forests, birds are most abundant diverse vertebrates known to have different requirements for nesting, breeding feeding. Therefore, we chose this group analyze key drivers avian community dynamics; purposes, information is requisite manage forest landscapes their associated biota. We first characterized understory floristic composition in open closed canopy broadleaved forests mixed deciduous (MD) deciduous-evergreen (MDE) species on coast Tierra del Fuego National Park, Argentina. For each habitat, bird assemblages were assessed using point counts, checklists mistnetting. used ANOVAs multivariate methods changes richness, density, biomass as a habitat seasonal characteristics. Forest plant communities influenced assemblage density; MDE had significantly greater but lower density than MD. Plus, particular with specific conditions, such Anairetes parulus Zonotrichia capensis whose presence was related shrubs. Additionally, variations observed between seasons apparently differential uses type during certain times year. Finally, it not possible define single value birds; assemblage. Consequently, our results suggest importance full representation habitats preserve region’s diversity, which also has been described invertebrates plants.