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dc.contributor.authorSuzuki, Keita W.en
dc.contributor.authorBouchard, Carolineen
dc.contributor.authorRobert, Dominiqueen
dc.contributor.authorFortier, Louisen
dc.contributor.alternative鈴木, 啓太ja
dc.descriptionFirst online: 24 April 2015en
dc.description.abstractCurrent trends of fish communities in the interior Arctic Ocean are largely unknown, whereas more fishes of boreal origin are reported from the Chukchi and Barents Seas recently. To assess variability in species composition and spatiotemporal occurrence in ichthyoplankton in the southeast Beaufort Sea, we sampled larval and juvenile fish using square-conical nets in the upper water column (<100 m) from June to September between 2002 and 2011. Gadidae consisting of Boreogadus saida and Arctogadus glacialis numerically accounted for >75 % of total catches every month. Cottidae and Liparidae usually followed Gadidae, together representing 9–94 % of non-gadid species in number. The majority of dominant and subdominant species occurred ubiquitously through the sampling area, whereas Gymnocanthus tricuspis (Cottidae), Liparis gibbus (Liparidae), and Leptoclinus maculatus (Stichaeidae) occurred abundantly on the Mackenzie Shelf. In contrast, Triglops nybelini (Cottidae) was frequently found in the Amundsen Gulf, which was characterized by higher salinities (>25). Exceptional species composition was observed in September 2011, when Ammodytes hexapterus (Ammodytidae) numerically accounted for 67 % of non-gadid species. In the southeast Beaufort Sea, summer ichthyoplankton are characterized by the overwhelming dominance of Arctic gadids as well as the frequent occurrence of Arctic cottids and liparids. However, the sudden and frequent occurrence of A. hexapterus may be a first sign of significant changes in fish communities in the interior Arctic Ocean.en
dc.publisherSpringer Berlin Heidelbergen
dc.rightsThe final publication is available at Springer via
dc.rightsThe full-text file will be made open to the public on 24 April 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'en
dc.rightsThis is not the published version. Please cite only the published version.en
dc.subjectAmmodytes hexapterusen
dc.subjectArctic Oceanen
dc.subjectClimate changeen
dc.subjectFish communityen
dc.subjectHorizontal distributionen
dc.subjectPacific sand lanceen
dc.titleSpatiotemporal occurrence of summer ichthyoplankton in the southeast Beaufort Seaen
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.jtitlePolar Biologyen
dcterms.accessRightsopen access-
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