dc.contributor.author | Aarflot, Johanna Myrseth | |
dc.contributor.author | Skjoldal, Hein Rune | |
dc.contributor.author | Dalpadado, Padmini | |
dc.contributor.author | Skern-Mauritzen, Mette | |
dc.date.accessioned | 2019-05-16T12:33:08Z | |
dc.date.available | 2019-05-16T12:33:08Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1054-3139 | en_US |
dc.identifier.uri | http://hdl.handle.net/1956/19658 | |
dc.description.abstract | Copepods from the genus Calanus are crucial prey for fish, seabirds and mammals in the Nordic and Barents Sea ecosystems. The objective of this study is to determine the contribution of Calanus species to the mesozooplankton biomass in the Barents Sea. We analyse an extensive dataset of Calanus finmarchicus, Calanus glacialis, and Calanus hyperboreus, collected at various research surveys over a 30-year period. Our results show that the Calanus species are a main driver of variation in the mesozooplankton biomass in the Barents Sea, and constitutes around 80% of the total. The proportion of Calanus decreases at low zooplankton biomass, possibly due to a combination of advective processes (low C. finmarchicus in winter) and size selective foraging. Though the Calanus species co-occur in most regions, C. glacialis dominates in the Arctic water masses, while C. finmarchicus dominates in Atlantic waters. The larger C. hyperboreus has considerably lower biomass in the Barents Sea than the other Calanus species. Stages CIV and CV have the largest contribution to Calanus species biomass, whereas stages CI-CIII have an overall low impact on the biomass. In the western area of the Barents Sea, we observe indications of an ongoing borealization of the zooplankton community, with a decreasing proportion of the Arctic C. glacialis over the past 20 years. Atlantic C. finmarchicus have increased during the same period. | en_US |
dc.language.iso | eng | eng |
dc.publisher | Oxford University Press | en_US |
dc.relation.ispartof | <a href="http://hdl.handle.net/1956/19660" target="blank">Three-dimensional zooplankton distributions seen through the lens of fish in the Barents Sea</a> | en_US |
dc.rights | Attribution CC BY | eng |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | eng |
dc.title | Contribution of Calanus to the mesozooplankton biomass in the Barents Sea | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright International Council for the Exploration of the Sea 2017 | en_US |
dc.identifier.doi | https://doi.org/10.1093/icesjms/fsx221 | |
dc.identifier.cristin | 1550721 | |
dc.source.journal | ICES Journal of Marine Science | |
dc.source.40 | 75 | |
dc.source.14 | 7 | |
dc.source.pagenumber | 2342-2354 | |