Habitat fragmentation narrows the distribution of avian functional traits associated with seed dispersal in tropical forest

Title: Habitat fragmentation narrows the distribution of avian functional traits associated with seed dispersal in tropical forest
Author(s): Bovo, AAA
Ferraz, KMPMB
Magioli, M
Alexandrino, ER
Hasui, É
Ribeiro, MC
Tobias, JA
Item Type: Journal Article
Abstract: Land-use change influences biodiversity in non-random ways, affecting some species and functional groups more than others, with potential implications for the loss or degradation of important ecological processes, such as seed dispersal. Here we investigate the effect of patch-size reduction on the composition and functional richness (FRic) of avian communities in Atlantic Forest fragments, focusing on morphological traits associated with seed dispersal in frugivorous birds. We found that FRic of three key traits—hand-wing index, body mass and gape width—decreased with patch size reduction, because species with larger values for morphological traits were lost through local extinction. The relative absence of large-gaped and more-dispersive frugivores in small forest fragments has important implications because these species play a pivotal role in seed dispersal, carrying higher seed loads for longer distances, and consuming larger-sized seeds that cannot be dispersed by smaller-gaped frugivores. Our results highlight the importance of preserving large or interconnected habitat patches, and promoting habitat restoration of cleared areas, to ensure that sufficient avian functional diversity is maintained to supply the full range of seed dispersal services required by tropical forests, both currently and in future.
Publication Date: 31-Mar-2018
Date of Acceptance: 22-Mar-2018
URI: http://hdl.handle.net/10044/1/58643
DOI: https://dx.doi.org/10.1016/j.pecon.2018.03.004
ISSN: 2530-0644
Publisher: Elsevier
Journal / Book Title: Perspectives in Ecology and Conservation
Copyright Statement: © 2018 Associação Brasileira de Ciência Ecológica e Conservação. Published by Elsevier Editora Ltda. This is an open access article under a Creative Commons license (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Publication Status: Published
Appears in Collections:Faculty of Natural Sciences



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