Kleyn, T, Kaizer, MDC and Passos, LF (2021) Sharing sound: Avian acoustic niches in the Brazilian Atlantic Forest. Biotropica, 53 (2). pp. 658-670. ISSN 0006-3606

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Abstract

In tropical birds, survival is dependent on the ability to effectively communicate with others against a background of high ambient noise. The Acoustic Niche Hypothesis proposes that the deterrent selective force of signal masking has caused animals sharing a habitat to partition their calling behavior among the acoustic bandwidths available, so as to minimize interference between one another. Whether and why species share the so-called “acoustic space” remains a gap in our understanding of animal ecosystems. The aim of this study was to investigate differences between the acoustic structure of avian communities in two distinct habitats in the montane tropical forests of the Caparaó National Park in south-eastern Brazil, and to test whether the distribution of birdsong at each conformed to the ANH. Birdsong from nine hours of passive acoustic recordings at each study site was analyzed using principal component analyses. The results contradicted the ANH, revealing strikingly similar patterns of synchronized vocal behavior (WAleixo = 0.63, p < 0.0001, RA = 0.48; WSanta Marta = 0.66, p < 0.0001, RSM = 0.41). No correlation was evident between the acoustic and temporal partitioning behavior of songbirds (pA » 0.05, dfA = 55; pSM » 0.05; dfSM = 27). This study provides a novel comparative analysis of the acoustic dynamics in two separate and diverse avian communities and support for theories of synchronized vocal behavior in such groups. Abstract in Portuguese is available with online material.

Item Type:	Article
Additional Information:	This is the peer reviewed version of the following article: Kleyn T, da Cruz Kaizer M, Passos LF. Sharing sound: Avian acoustic niches in the Brazilian Atlantic Forest. Biotropica. 2021; 53: 658–670. https://doi.org/10.1111/btp.12907, which has been published in final form at https://doi.org/10.1111/btp.12907. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Uncontrolled Keywords:	acoustic niche; animal communication; Bioacoustics; birdsong; Ecology; Environmental Sciences & Ecology; Life Sciences & Biomedicine; morning chorus; partitioning; principal component analysis; Science & Technology; vocalizations; Science & Technology; Life Sciences & Biomedicine; Ecology; Environmental Sciences & Ecology; acoustic niche; animal communication; Bioacoustics; birdsong; morning chorus; partitioning; principal component analysis; vocalizations; acoustic niche; animal communication; Bioacoustics; birdsong; morning chorus; partitioning; principal component analysis; vocalizations; 05 Environmental Sciences; 06 Biological Sciences; 07 Agricultural and Veterinary Sciences; Ecology
Subjects:	Q Science > QH Natural history > QH301 Biology Q Science > QL Zoology
Divisions:	Biological and Environmental Sciences (from Sep 19)
Publisher:	Wiley
SWORD Depositor:	A Symplectic
Date Deposited:	20 Nov 2024 15:40
Last Modified:	20 Nov 2024 15:40
DOI or ID number:	10.1111/btp.12907
URI:	https://researchonline.ljmu.ac.uk/id/eprint/24827

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