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Figueiredo Passos, L 
ORCID: 0000-0003-4529-9950, Grundy, V, Kaizer, M and Schork, I
(2025)
Soundscapes: Species Richness and Community Composition of Neotropical Atlantic Forest Avifauna.
Conservation, 5 (3).
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Abstract
As tropical forests become increasingly vulnerable to land use changes, fragmentation, and climate shifts, efforts to minimise species loss are essential. Prevalent in most environments and having complex vocalisations, birds are key indicators of ecosystem health and a good model for acoustic monitoring. In Brazil, the Caparaó National Park (CNP) is a preserved remnant of the Atlantic Forest with great avian endemism. Despite having >600 species, limited research has utilised bioacoustics for species assessment. This study employed bioacoustics to examine soundscapes and community composition at two CNP locations—one with ombrophilous montane forest (OMF) and another with semi-deciduous seasonal forest (SSF). Four SongMeters were deployed, recording bird choruses from 08:00 to 11:00 a.m. for two months. Soundscape profiles and species composition were characterised using Raven Pro. Acoustic indices assessed correlations with avian species richness, and sites were compared using the Mann–Whitney U test. Ninety-eight species were detected, and species richness was greater within SSF. While acoustic indices had little impact on richness, they identified differing soundscapes: more ambient noise in OMF, and gunshots detected in SSF. The results indicate that bioacoustics can aid monitoring strategies. Given the presence of rare species and illegal activities, more studies are needed to support the conservation of birds in this critical environment
| Item Type: | Article |
|---|---|
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Divisions: | Biological and Environmental Sciences (from Sep 19) |
| Publisher: | MDPI |
| Date of acceptance: | 28 August 2025 |
| Date of first compliant Open Access: | 3 September 2025 |
| Date Deposited: | 03 Sep 2025 14:18 |
| Last Modified: | 03 Sep 2025 14:30 |
| DOI or ID number: | 10.3390/conservation5030048 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/27092 |
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