Distance and orientation of hydrophones influence the received soundscape in shallow coral reefs DOI Creative Commons

Juan Carlos Azofeifa-Solano,

Christine Erbe, Cristina Tollefsen

et al.

Frontiers in Remote Sensing, Journal Year: 2025, Volume and Issue: 6

Published: Feb. 13, 2025

Introduction Acoustic monitoring and soundscape analysis provide valuable data for the conservation restoration of underwater habitats. However, before these methods can be widely implemented management purposes, it is crucial to validate ecological relevance different sampling methodologies quantify potential biases. Methods We investigated how distance orientation an acoustic sensor relative a target habitat influence received soundscape. Using spatial array hydrophones, we recorded sound at distances (1 m, 2 5 m) orientations (vertical vs. horizontal) from shallow coral reef. Results Hydrophones oriented horizontally toward reef exhibited expected decrease in levels with increasing distance. In contrast, hydrophones vertically showed inverse trend, lower pressure closer higher further away. Discussion These findings indicate that directivity significantly influences soundscape, introducing methodological bias within across datasets. To improve accuracy comparability coastal habitats, beam patterns should carefully considered experimental design.

Language: Английский

Distance and orientation of hydrophones influence the received soundscape in shallow coral reefs DOI Creative Commons

Juan Carlos Azofeifa-Solano,

Christine Erbe, Cristina Tollefsen

et al.

Frontiers in Remote Sensing, Journal Year: 2025, Volume and Issue: 6

Published: Feb. 13, 2025

Introduction Acoustic monitoring and soundscape analysis provide valuable data for the conservation restoration of underwater habitats. However, before these methods can be widely implemented management purposes, it is crucial to validate ecological relevance different sampling methodologies quantify potential biases. Methods We investigated how distance orientation an acoustic sensor relative a target habitat influence received soundscape. Using spatial array hydrophones, we recorded sound at distances (1 m, 2 5 m) orientations (vertical vs. horizontal) from shallow coral reef. Results Hydrophones oriented horizontally toward reef exhibited expected decrease in levels with increasing distance. In contrast, hydrophones vertically showed inverse trend, lower pressure closer higher further away. Discussion These findings indicate that directivity significantly influences soundscape, introducing methodological bias within across datasets. To improve accuracy comparability coastal habitats, beam patterns should carefully considered experimental design.

Language: Английский

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