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    Don’t assume it’s ghost gear : accurate gear characterization is critical for entanglement mitigation [poster]

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    Biennial Poster 2017 entanglement v marine debris.pdf (1.777Mb)
    Date
    2017-10-25
    Author
    Henry, Allison G.  Concept link
    Barco, Susan G.  Concept link
    Cole, Tim  Concept link
    Johnson, Amanda  Concept link
    Knowlton, Amy R.  Concept link
    Landry, Scott  Concept link
    Mattila, David K.  Concept link
    Moore, Michael J.  Concept link
    Robbins, Jooke  Concept link
    van der Hoop, Julie  Concept link
    Asmutis-Silvia, Regina  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/9287
    Date Created
    2017-10-05
    DOI
    10.1575/1912/9287
    Keyword
     Entanglement; Marine mammals; Entangling gear 
    Abstract
    Entanglement is a significant conservation and welfare issue which is limiting the recovery of a number of marine species, including marine mammals. It is therefore important to reliably identify the causes of these events, including the nature of the entangling gear in order to reduce or prevent them in the future. A recently published review of marine debris assessed 76 publications and attributed a total of 1805 cases of cetacean entanglements in “ghost gear”, of which 78% (n=1413) were extracted from 13 peer reviewed publications. We examined the 13 publications cited in the review and found that the specific gear type or status of gear involved in the reported events was rarely mentioned beyond the fact that it was fishing related. This is likely due to the fact that determinations of debris as the entangling material are very difficult. In fact, in reviewing 10 years of large whale entanglement records for the U.S., the authors of another study reported that Hawaii was the only region in which any entangling gear was positively identified as ghost gear. The assumption that entangling gear is marine debris unless otherwise stated is dangerous because it could impact efforts to modify or restrict risk-prone fishing in key marine mammal habitats. Entanglement in actively fished gear poses a very real threat, and claims that only lost or abandoned fishing gear is responsible for entanglements can undermine conservation efforts.
    Description
    Presented at the Society for Marine Mammology 22nd Biennial Marine Mammal Conference, Halifax, Nova Scotia, October 23-27, 2017
    Collections
    • Biology
    Suggested Citation
    Presentation: Henry, Allison G., Barco, Susan G., Cole, Tim, Johnson, Amanda, Knowlton, Amy R., Landry, Scott, Mattila, David K., Moore, Michael J., Robbins, Jooke, van der Hoop, Julie, Asmutis-Silvia, Regina, "Don’t assume it’s ghost gear : accurate gear characterization is critical for entanglement mitigation [poster]", Presented at the Society for Marine Mammology 22nd Biennial Marine Mammal Conference, Halifax, Nova Scotia, October 23-27, 2017, DOI:10.1575/1912/9287, https://hdl.handle.net/1912/9287
     

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