Natural and anthropogenic events influence the soundscapes of four bays on Hawaii Island

H.L. Heenehan; S.M. Van Parijs; L. Bejder; J.A. Tyne; B.L. Southall; H. Southall; D.W. Johnston

doi:10.1016/j.marpolbul.2017.06.065

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Natural and anthropogenic events influence the soundscapes of four bays on Hawaii Island

Journal article

Peer reviewed

Natural and anthropogenic events influence the soundscapes of four bays on Hawaii Island

H.L. Heenehan, S.M. Van Parijs, L. Bejder, J.A. Tyne, B.L. Southall, H. Southall and D.W. Johnston

Marine Pollution Bulletin, Vol.124(1), pp.9-20

2017

DOI: https://doi.org/10.1016/j.marpolbul.2017.06.065

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Abstract

The soundscapes of four bays along the Kona Coast of Hawaii Island were monitored between January 2011 and March 2013. Equivalent, unweighted sound pressure levels within standard 1/3rd-octave bands (dB re: 1. μPa) were calculated for each recording. Sound levels increased at night and were lowest during the daytime when spinner dolphins use the bays to rest. A tsunami provided an opportunity to monitor the soundscape with little anthropogenic component. We detected a decrease in sound levels and variability in one of the busiest bays. During the daytime in the 3.15. kHz 1/3rd octave band, we detected 92 loud outliers from vessels, aquaculture, and military mid-frequency active sonar. During one military mid-frequency active sonar event sound levels reached 45.8. dB above median ambient noise levels. The differences found in the bays illustrate the importance of understanding soundscapes to effectively manage noise pollution in marine ecosystems.

Details

Title: Natural and anthropogenic events influence the soundscapes of four bays on Hawaii Island
Authors/Creators: H.L. Heenehan (Author/Creator) - Integrated Statistics (United States)
S.M. Van Parijs (Author/Creator) - NOAA National Marine Fisheries Service
L. Bejder (Author/Creator) - Murdoch University
J.A. Tyne (Author/Creator) - Murdoch University
B.L. Southall (Author/Creator) - University of California, Santa Cruz
H. Southall (Author/Creator) - Southall Environmental Associates (United States)
D.W. Johnston (Author/Creator) - Duke University
Publication Details: Marine Pollution Bulletin, Vol.124(1), pp.9-20
Publisher: Elsevier BV
Identifiers: 991005543026207891
Copyright: © 2017 Elsevier Ltd.
Murdoch Affiliation: School of Veterinary and Life Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.35 Zoology & Animal Ecology; 3.35.796 Marine Mammal Ecology
Web Of Science research areas: Environmental Sciences; Marine & Freshwater Biology
ESI research areas: Environment/Ecology