Biophony in a noisy tropical urban forest fragment

Gonçalves Santos, S ORCID:, Pieretti, N ORCID:, Young, RJ ORCID: and Duarte, M ORCID: 2021, 'Biophony in a noisy tropical urban forest fragment' , Biota Colombiana, 22 (1) , pp. 96-107.

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Anthropogenic noise, which is part of an urban soundscape, can negatively affect the behaviour of wild animals. Here we investigated how biophony (animal sounds) was affected by noise in an urban Brazilian forest frag-ment. Our hypothesis was that noise and biophony would differ between the border and the centre of the forest fragment (i.e., lower biophony predicted in noisy areas). Two passive acoustic monitoring devices were used to record soundscapes one week per month, 24 hour per day, from May to July 2012. The Acoustic Complexity Index (ACI) was used to quantify biophony and the Power Spectral Density (PSD) to quantify urban noise. PSD and ACI were higher on the border than in the centre of the fragment. PSD was lower in July, while the ACI did not significantly vary between months. Noise levels were also higher on the border. Conversely, potential spe-cies richness was higher in the centre of the forest fragment. Higher biophony at noisy sites can be interpreted as behavioural responses of species for communicating in noisy areas. Alternatively, they could be the result of species segregation by degree of vocal plasticity or due to differences in composition of communities.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences
Journal or Publication Title: Biota Colombiana
Publisher: Instituto de Investigación de Recursos Biológicos Alexander von Humboldt
ISSN: 0124-5376
Related URLs:
Funders: Brazilian Council for Scientific and Technological Development (CNPq), Minas Gerais Research Foundation (FAPEMIG–PPM), Brazilian Coordination for the Improvement of Higher Education Personnel
Depositing User: USIR Admin
Date Deposited: 01 Mar 2021 15:10
Last Modified: 16 Feb 2022 06:49

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