Soundscape of protected and unprotected tropical Atlantic coastal coral reefs

Behavioural patterns and distributions of crustaceans, fish and mammals can be inferred from acoustic recordings of the extremely noisy marine acoustic environment. In this study, we determined the soundscape of protected and non-protected marine areas between January and April 2016. Sonobuoy (a dev...

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Bibliographic Details
Published in:Scientia marina 2021, Vol.85 (1), p.5-14
Main Authors: Borie, Alfredo, Magalhães Rezende, Sergio, Padovani Ferreira, Beatrice, Maida, Mauro, Radford, Craig, Travassos, Paulo
Format: Article
Language:English
Subjects:
Acoustics
Aquatic crustaceans
Bandwidths
bioacoustics
Biodiversity
Coasts
Commercial fishing
Coral reefs
Crustacea
Crustaceans
Energy levels
Fish
fish and crustacean sounds
Fish populations
Marinas
marine cacophony
Marine environment
Marine invertebrates
passive acoustic
Protected areas
Shellfish
Software
Sonobuoys
Tourism
Tropical climate
Tropical fish
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Summary:Behavioural patterns and distributions of crustaceans, fish and mammals can be inferred from acoustic recordings of the extremely noisy marine acoustic environment. In this study, we determined the soundscape of protected and non-protected marine areas between January and April 2016. Sonobuoy (a device for sound monitoring) recordings began at sunset and lasted approximately 12 hours per day. The results show a complex soundscape dominated by biological sounds produced by crustaceans and fish. Six fish chorus-dominant frequencies between 200 and 1000 Hz occurred at a similar time each day, except for chorus I. The choruses consisted of high-energy callings after the last reef line within the protected area. However, fish choruses showed low energy levels in unprotected areas. The results show the importance of protected areas for fish populations and the usefulness of passive acoustics to monitor biodiversity of sounds of commercial fish in Brazilian tropical costal reefs.
ISSN:0214-8358
1886-8134
DOI:10.3989/scimar.05052.001