dc.contributor.author | Ikenoue, Takahito | |
dc.contributor.author | Bjørklund, Kjell Rasmus | |
dc.contributor.author | Krabberød, Anders Kristian | |
dc.contributor.author | Nishino, Shigeto | |
dc.contributor.author | Wassmann, Paul | |
dc.date.accessioned | 2023-10-13T11:47:14Z | |
dc.date.available | 2023-10-13T11:47:14Z | |
dc.date.issued | 2023-09-21 | |
dc.description.abstract | To determine the present-day community composition of siliceous Rhizaria
(Radiolaria and Phaeodaria) in Norwegian fjords, plankton tows were conducted in south-western and northern Norwegian fjords in September 2016.
The mean total abundance of radiolarians was 306 m<sup>–3</sup> in the Sognefjord complex, which was the southern research site, and, in the north, 945 m<sup>–3</sup> in
Malangen and 89 m<sup>–3</sup> in Balsfjord, both above the Arctic Circle. Sticholonche
zanclea was the most abundant radiolarian in the Sognefjord complex and
Malangen, accounting for 78–100% (mean 89%) of radiolarian abundance.
The mean total abundance of phaeodarians was 1554 m<sup>–3</sup> in the Sognefjord
complex, 51 m<sup>–3</sup> in Malangen and 11 m<sup>–3</sup> in Balsfjord. Medusetta arcifera was the
most abundant phaeodaria in the Sognefjord complex, accounting for >99% of
phaeodarian abundance, but was absent in Malangen and Balsfjord, where
Protocystis tridens accounted for >96% of phaeodarian abundance. The carbon
biomass of S. zanclea and M. arcifera was 188 and 438 µg C m<sup>–3</sup>, respectively,
which is similar to and 8.6 times higher than, respectively, that of phaeodarians
>1 mm in the western North Pacific, suggesting that M. arcifera contributes to
organic carbon transport in the Sognefjord complex. Amphimelissa setosa
(Nassellaria, Radiolaria), which was a dominant species in the study area in
1982–83, was absent in the present study in all sampled fjords. This could have
been caused by the approximately 2 °C increase in water temperature that has
occurred since 1990 and can be taken as evidence of a climate-change-associated local temperature rise linked to the warming of advected Atlantic Water. | en_US |
dc.identifier.citation | Ikenoue, Bjørklund, Krabberød, Nishino, Wassmann. Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages. Polar Research. 2023;42 | en_US |
dc.identifier.cristinID | FRIDAID 2183654 | |
dc.identifier.doi | 10.33265/polar.v42.9584 | |
dc.identifier.issn | 0800-0395 | |
dc.identifier.issn | 1751-8369 | |
dc.identifier.uri | https://hdl.handle.net/10037/31546 | |
dc.language.iso | eng | en_US |
dc.publisher | Norwegian Polar Institute | en_US |
dc.relation.journal | Polar Research | |
dc.rights.accessRights | openAccess | en_US |
dc.rights.holder | Copyright 2023 The Author(s) | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by-nc/4.0 | en_US |
dc.rights | Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) | en_US |
dc.title | Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages | en_US |
dc.type.version | publishedVersion | en_US |
dc.type | Journal article | en_US |
dc.type | Tidsskriftartikkel | en_US |
dc.type | Peer reviewed | en_US |