Spatial overlap of grey seals and fisheries in Irish waters, some new insights using telemetry technology and VMS

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dc.contributor.authorCronin, Michelle A.
dc.contributor.authorGerritsen, H.
dc.contributor.authorReid, D.
dc.contributor.authorJessopp, Mark J.
dc.contributor.editorHyrenbach, David
dc.contributor.funderMarine Instituteen
dc.contributor.funderNational Geographic Societyen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderInland Fisheries Ireland
dc.date.accessioned2016-10-20T09:14:50Z
dc.date.available2016-10-20T09:14:50Z
dc.date.issued2016-09-28
dc.description.abstractSeals and humans often target the same food resource, leading to competition. This is of mounting concern with fish stocks in global decline. Grey seals were tracked from southeast Ireland, an area of mixed demersal and pelagic fisheries, and overlap with fisheries on the Celtic Shelf and Irish Sea was assessed. Overall, there was low overlap between the tagged seals and fisheries. However, when we separate active (e.g. trawls) and passive gear (e.g. nets, lines) fisheries, a different picture emerged. Overlap with active fisheries was no different from that expected under a random distribution, but overlap with passive fisheries was significantly higher. This suggests that grey seals may be targeting the same areas as passive fisheries and/or specifically targeting passive gear. There was variation in foraging areas between individual seals suggesting habitat partitioning to reduce intra-specific competition or potential individual specialisation in foraging behaviour. Our findings support other recent assertions that seal/fisheries interactions in Irish waters are an issue in inshore passive fisheries, most likely at the operational and individual level. This suggests that seal population management measures would be unjustifiable, and mitigation is best focused on minimizing interactions at nets.en
dc.description.sponsorshipMarine Institute (Beaufort Marine Research Award BEAU-EAFM-06); National Geographic Society (Global Exploration Fund GEFNE9-11); Inland Fisheries Ireland (Salmon Conservation Fund CRA/2011/183); Science Foundation Ireland (SFI/12/RC/2302)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleide0160564
dc.identifier.citationCronin, M., Gerritsen, H., Reid, D. and Jessopp, M. (2016) 'Spatial overlap of grey seals and fisheries in Irish waters, some new insights using telemetry technology and VMS', PLoS One, 11(9), e0160564 (13pp). doi:10.1371/journal.pone.0160564en
dc.identifier.doi10.1371/journal.pone.0160564
dc.identifier.endpage13en
dc.identifier.issn1932-6203
dc.identifier.issued9en
dc.identifier.journaltitlePLoS ONEen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/3195
dc.identifier.volume11en
dc.language.isoenen
dc.publisherPublic Library of Scienceen
dc.rights© 2016, Cronin et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectCompetitionen
dc.subjectDeclineen
dc.subjectOverlapen
dc.subjectActive fisheriesen
dc.subjectPassive fisheriesen
dc.subjectSeal population managementen
dc.titleSpatial overlap of grey seals and fisheries in Irish waters, some new insights using telemetry technology and VMSen
dc.typeArticle (peer-reviewed)en
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