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dc.contributor.authorRavelo, Alexandra M.
dc.contributor.authorBluhm, Bodil
dc.contributor.authorFoster, Nora
dc.contributor.authorIken, Katrin
dc.date.accessioned2021-05-10T09:08:44Z
dc.date.available2021-05-10T09:08:44Z
dc.date.issued2020-01-27
dc.description.abstractBenthic communities change drastically in both biomass and community structure with increasing water depth on a global scale, attributed to a combination of food supply, environmental drivers, as well as physiological and competitive capacities. In the Arctic, benthic biogeographic patterns are additionally thought to be a result of the region’s glaciation history. Here, we investigate gross epibenthic biomass and assemblage structure turnover with water mass from coastal to bathyal depths from 136 beam trawl samples collected in the Beaufort Sea. We test whether Pacific Boreal Arctic species have their core distribution in shelf water masses while Atlantic Boreal Arctic species have wider depth ranges. Gross biomass estimates differed statistically among water masses, with high values mostly under the influences of the Polar Mixed Layer and Arctic Halocline (outer shelf and upper slope, respectively). Stations in the Coastal Zone and Canada Basin Deep Water had the lowest biomass. Epibenthic assemblages also differed significantly among water masses, with high taxon richness in shelf water masses that decreased considerably with depth. Biomass of benthic taxa with Pacific Boreal Arctic affinity was essentially limited to the shelf, while Atlantic Boreal Arctic taxa occurred across a broad depth range, though their biomass increased in deeper water masses for mollusks and echinoderms, but not for decapods/isopods. Our results confirm earlier evidence of a strong Atlantic-Arctic deep-water connectivity reaching into the Pacific Arctic region and suggest new arrivals of species from the boreal Pacific are likely to settle on Pacific Arctic shelves, but are unlikely to invade continental slope and basin waters in the foreseeable future.en_US
dc.descriptionThis is a post-peer-review, pre-copyedit version of an article published in Marine Biodiversity. The final authenticated version is available online at: http://dx.doi.org/https://doi.org/10.1007/s12526-019-01036-9.en_US
dc.identifier.citationRavelo AM, Bluhm B, Foster N, Iken K. Biogeography of epibenthic assemblages in the central Beaufort Sea. . Marine Biodiversity. 2020;50(8)en_US
dc.identifier.cristinIDFRIDAID 1868273
dc.identifier.doihttps://doi.org/10.1007/s12526-019-01036-9
dc.identifier.issn1867-1616
dc.identifier.issn1867-1624
dc.identifier.urihttps://hdl.handle.net/10037/21167
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.journalMarine Biodiversity
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright © 2020, Senckenberg Gesellschaft für Naturforschungen_US
dc.subjectVDP::Mathematics and natural science: 400en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400en_US
dc.titleBiogeography of epibenthic assemblages in the central Beaufort Seaen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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