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dc.contributor.authorChristensen-Dalsgaard, Signe
dc.contributor.authorAnker-Nilssen, Tycho
dc.contributor.authorCrawford, Rory
dc.contributor.authorBond, Alexander
dc.contributor.authorSigurðsson, Guðjón Már
dc.contributor.authorGlemarec, Gildas
dc.contributor.authorSnær Hansen, Erpur
dc.contributor.authorKadin, Martina
dc.contributor.authorKindt-Larsen, Lotte
dc.contributor.authorMallory, Mark
dc.contributor.authorRavn Merkel, Flemming
dc.contributor.authorPetersen, Aevar
dc.contributor.authorProvencher, Jennifer
dc.contributor.authorBærum, Kim Magnus
dc.coverage.spatialNorth Atlanticnb_NO
dc.description.abstractWorldwide, incidental bycatch in fisheries is a conservation threat to many seabird species. Although knowledge on bycatch of seabirds has increased in the last decade, most stems from longline fisheries and the impacts of coastal gillnet fisheries are poorly understood. Gillnet fishing for North Atlantic lumpsucker (Cyclopterus lumpus) is one such fishery. We collated and synthesized the available information on seabird bycatch in lumpsucker gillnet fisheries across the entire geographical range to estimate and infer the magnitude of their impact on the affected seabird populations. Most birds killed were diving ducks, cormorants and auks, and each year locally high numbers of seabirds were taken as bycatch. We found large differences in bycatch rates among countries. The estimated mean bycatch in Iceland was 2.43 birds/trip, while the estimates in Norway was 0.44 and 0.39 birds/trip, respectively. The large disparities between estimates might reflect large spatial differences in bycatch rates, but could partly also arise due to distinctions in data recorded by onboard inspectors (Iceland), selfadministered registration (Norway) and direct observations by cameras (Denmark). We show that lumpsucker gillnet fisheries might pose a significant risk to some populations of diving seabirds. However, a distinct data deficiency on seabird bycatch in terms of spatio-temporal coverage and the age and origins of the birds killed, limited our abilities to fully assess the extent and population consequences of the bycatch. Our results highlight the need for a joint effort among countries to standardize monitoring methods to better document the impact of these fisheries on seabirds.nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectCyclopterus lumpusnb_NO
dc.subjectNorth Atlanticnb_NO
dc.titleWhat’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheriesnb_NO
dc.typePeer reviewednb_NO
dc.typeJournal article
dc.rights.holder© 2019 The Authors.nb_NO
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480nb_NO
dc.source.journalBiological Conservationnb_NO

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal