Soundscape of an Indo-Pacific humpback dolphin (Sousa chinensis) hotspot before windfarm construction in the Pearl River Estuary, China: Do dolphin engage in noise avoidance and passive eavesdropping behavior?
Acoustics
Chinese white dolphin
Dolphin vocalization
Fish vocalization
Soundscape
Windfarm
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Mar 2019
Mar 2019
Historique:
received:
22
12
2018
revised:
06
02
2019
accepted:
06
02
2019
entrez:
27
2
2019
pubmed:
26
2
2019
medline:
9
4
2019
Statut:
ppublish
Résumé
Soundscapes are vital to acoustically specialized animals. Using passive acoustic monitoring data, the temporal and spectral variations in the soundscape of a Chinese white dolphin hotspot were analyzed. By cluster analysis, the 1/3 octave band power spectrum can be grouped into three bands with median overall contribution rates of 35.24, 14.14 and 30.61%. Significant diel and tidal soundscape variations were observed with a generalized linear model. Temporal patterns and frequency ranges of middle frequency band sound matched well with those of fish vocalization, indicating that fish might serve as a signal source. Dolphin sounds were mainly detected in periods involving low levels of ambient sound and without fish vocalization, which could reflect noise avoidance and passive eavesdropping behaviors engaged in by the predator. Pre-construction data can be used to assess the effects of offshore windfarms on acoustic environments and aquatic animals by comparing them with the soundscape of postconstruction and/or postmitigation.
Identifiants
pubmed: 30803672
pii: S0025-326X(19)30102-X
doi: 10.1016/j.marpolbul.2019.02.013
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
509-522Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.