Use este identificador para citar ou linkar para este item:
https://repositorio.inpa.gov.br/handle/1/17210
Título: | Consequences of a large-scale fragmentation experiment for Neotropical bats: disentangling the relative importance of local and landscape-scale effects |
Autor: | Rocha, Ricardo López-Baucells, Adrià Farneda, Fábio Z. Groenenberg, Milou Bobrowiec, Paulo Estefano Dineli Cabeza, Mar Palmeirim, Jorge Manuel Meyer, Christoph F.J. |
Palavras-chave: | Bat Biodiversity Edge Effect Environmental Disturbance Habitat Fragmentation Habitat Loss Habitat Quality Landscape Structure Neotropical Region Secondary Forest Species Evenness Species Richness Vegetation Structure Amazon River |
Data do documento: | 2017 |
Revista: | Landscape Ecology |
É parte de: | Volume 32, Número 1, Pags. 31-45 |
Abstract: | Context: Habitat loss, fragmentation and degradation are widespread drivers of biodiversity decline. Understanding how habitat quality interacts with landscape context, and how they jointly affect species in human-modified landscapes, is of great importance for informing conservation and management. Objectives: We used a whole-ecosystem manipulation experiment in the Brazilian Amazon to investigate the relative roles of local and landscape attributes in affecting bat assemblages at an interior-edge-matrix disturbance gradient. Methods: We surveyed bats in 39 sites, comprising continuous forest (CF), fragments, forest edges and intervening secondary regrowth. For each site, we assessed vegetation structure (local-scale variable) and, for five focal scales, quantified habitat amount and four landscape configuration metrics. Results: Smaller fragments, edges and regrowth sites had fewer species and higher levels of dominance than CF. Regardless of the landscape scale analysed, species richness and evenness were mostly related to the amount of forest cover. Vegetation structure and configurational metrics were important predictors of abundance, whereby the magnitude and direction of response to configurational metrics were scale-dependent. Responses were ensemble-specific with local-scale vegetation structure being more important for frugivorous than for gleaning animalivorous bats. Conclusions: Our study indicates that scale-sensitive measures of landscape structure are needed for a more comprehensive understanding of the effects of fragmentation on tropical biota. Although forest fragments and regrowth habitats can be of conservation significance for tropical bats our results further emphasize that primary forest is of irreplaceable value, underlining that their conservation can only be achieved by the preservation of large expanses of pristine habitat. © 2016, Springer Science+Business Media Dordrecht. |
DOI: | 10.1007/s10980-016-0425-3 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.