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Urban Ecosystems

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04-08-2015

Green remnants are hotspots for bat activity in a large Brazilian urban area

Authors: Mona Lisa Veríssimo Silva de Araújo, Enrico Bernard

Published in: Urban Ecosystems | Issue 1/2016

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Abstract

Urbanization tends to remove or isolate green areas into fragments or restrict them to narrow corridors inserted in a matrix of buildings. Nevertheless, urban green areas may act as refuges for fauna and bats are among the animals able to use such habitats. Using bioacoustics we investigated the influence of green areas on the activity of insectivorous bats in the metropolitan area of Recife, a conurbation of 4 million people in the Atlantic forest of Northeastern Brazil. Bat activity was statistically higher in green areas, based on calls (t = 2.5298, p = 0.0165), but not on feeding buzzes (t = 1.8132, p = 0.0817) or social calls (t = −1.5551, p = 0.1329). Several species were able to persist in an urban matrix and calls were classified into 16 sonotypes, belonging to five families (Emballonuridae, Molossidae, Noctilionidae, Phyllostomidae and Vespertilionidae). However, activity was significantly more associated with areas with vegetation, indicating that green remnants are hotspots for bat activity. Our results indicate that most insectivorous bats have a biased use of the urban landscape and the maintenance of urban green areas is essential to preserve them and the environmental services they provide.

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Title: Green remnants are hotspots for bat activity in a large Brazilian urban area
Authors: Mona Lisa Veríssimo Silva de Araújo
Enrico Bernard
Publication date: 04-08-2015
Publisher: Springer US
Published in: Urban Ecosystems / Issue 1/2016
Print ISSN: 1083-8155
Electronic ISSN: 1573-1642
DOI: https://doi.org/10.1007/s11252-015-0487-z

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