Skip to the content

Consequences of a large-scale fragmentation experiment for Neotropical bats : disentangling the relative importance of local and landscape-scale effects

Rocha, R, López-Baucells, A, Farneda, FZ, Groenenberg, M, Bobrowiec, PED, Cabeza, M, Palmeirim, JM and Meyer, CFJ 2016, 'Consequences of a large-scale fragmentation experiment for Neotropical bats : disentangling the relative importance of local and landscape-scale effects' , Landscape Ecology , pp. 1-15.

[img] PDF - Accepted Version
Restricted to Repository staff only until 25 July 2017.

Download (1MB) | Request a copy
[img] Microsoft Word - Accepted Version
Restricted to Repository staff only

Download (3MB) | Request a copy

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.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences > Ecosystems and Environment Research Centre
Journal or Publication Title: Landscape Ecology
Publisher: Springer
ISSN: 0921-2973
Related URLs:
Funders: Foundation for Science and Technology (FCT), Portugal, CNPq, Brazil, CAPES, Brazil, Academy of Finland
Depositing User: Dr Christoph Meyer
Date Deposited: 28 Jul 2016 09:46
Last Modified: 06 Oct 2016 09:51
URI: http://usir.salford.ac.uk/id/eprint/39550

Actions (login required)

Edit record (repository staff only) Edit record (repository staff only)

Downloads

Downloads per month over past year