Shafiei Sabet S, Aminifsrd M, Samandar Z, Alizadeh Ladehmakhi F. Measurements of ambient and elevated sound levels in an experimental tank. مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2024; 12 (1) : 5
URL:
http://joasi.ir/article-1-289-en.html
Abstract: (119 Views)
Researchers typically expose aquatic animals to sound treatments and conduct behavioral observations to understand the impact of anthropogenic noise on animals in small, water-filled tanks. In this study, using a methodological approach, a model for measuring and analyzing underwater sound levels in a fish tank is presented. Measurements of sound pressure levels were taken under ambient background noise conditions (with and without the use of an underwater loudspeaker), as well as for an increased sound pressure level at three-dimensional locations (length, width, and height) within a fish tank. There was no significant difference (P > 0.05) in sound levels between the two absolute ambient conditions (96.03 and 96.13 dB re 1 µPa for conditions with and without underwater speaker playback, respectively). However, a significant difference (P < 0.001) was observed between ambient sound conditions and the elevated sound playback treatment (96.40 dB re 1 µPa). Due to the complexity of underwater sound fields in laboratory-based experiments, the use of standardized playbacks and the creation of biologically relevant acoustic stimuli are crucial to avoiding pseudoreplication and ensuring the reliability of underwater bioacoustic studies and behavioral research. Furthermore, to produce rigorous, evidence-based science that enhances reproducibility and repeatability in underwater acoustic studies, it is recommended to provide open-source metadata, a detailed methodology, and explicit reporting of acoustic component measurements in behavioral studies.
Article number: 5
Type of Study:
Research |
Subject:
Bioacoustics Received: 2024/05/28 | Accepted: 2024/09/21 | Published: 2024/09/26