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    Ships and air guns reduce social interactions in humpback whales at greater ranges than other behavioral impacts

    Access Status
    Fulltext not available
    Authors
    Dunlop, R.A.
    McCauley, Robert
    Noad, M.J.
    Date
    2020
    Type
    Journal Article
    
    Metadata
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    Citation
    Dunlop, R.A. and McCauley, R.D. and Noad, M.J. 2020. Ships and air guns reduce social interactions in humpback whales at greater ranges than other behavioral impacts. Marine Pollution Bulletin. 154: Article No. 111072.
    Source Title
    Marine Pollution Bulletin
    DOI
    10.1016/j.marpolbul.2020.111072
    ISSN
    0025-326X
    Faculty
    Faculty of Science and Engineering
    School
    School of Earth and Planetary Sciences (EPS)
    URI
    http://hdl.handle.net/20.500.11937/80231
    Collection
    • Curtin Research Publications
    Abstract

    © 2020 Elsevier Ltd

    Understanding the interactions between human activity in the ocean and marine mammals is a fundamental step to developing responsible mitigation measures and informing policy. Here, the response of migrating humpback whales to vessels towing seismic air gun arrays (on or off) was quantified as a reduction in their likelihood of socially interacting (joining together). Groups were significantly less likely to participate in a joining interaction in the presence of a vessel, regardless of whether or not the air guns were active. This reduction was especially pronounced in groups within a social environment that favored joining, that is, when singing whales or other groups were nearby. Seismic survey mitigation practices are designed primarily to prevent damage to whales' hearing from close-by sources. Here, we found potentially detrimental behavioral changes at much greater ranges, and much lower received levels, than those used for current mitigation recommendations.

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