Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages
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 –3 in the Sognefjord complex, wh...
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Norwegian Polar Institute
2023
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Online Access: | https://hdl.handle.net/10037/31546 https://doi.org/10.33265/polar.v42.9584 |
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ftunivtroemsoe:oai:munin.uit.no:10037/31546 2023-11-12T04:13:40+01:00 Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages Ikenoue, Takahito Bjørklund, Kjell Rasmus Krabberød, Anders Kristian Nishino, Shigeto Wassmann, Paul 2023-09-21 https://hdl.handle.net/10037/31546 https://doi.org/10.33265/polar.v42.9584 eng eng Norwegian Polar Institute Polar Research 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 FRIDAID 2183654 doi:10.33265/polar.v42.9584 0800-0395 1751-8369 https://hdl.handle.net/10037/31546 Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by-nc/4.0 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2023 ftunivtroemsoe https://doi.org/10.33265/polar.v42.9584 2023-10-18T23:07:50Z 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 –3 in the Sognefjord complex, which was the southern research site, and, in the north, 945 m –3 in Malangen and 89 m –3 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 –3 in the Sognefjord complex, 51 m –3 in Malangen and 11 m –3 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 –3 , 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. Article in Journal/Newspaper Arctic Balsfjord Climate change Malangen Polar Research University of Tromsø: Munin Open Research Archive Arctic Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) Malangen ENVELOPE(18.598,18.598,69.400,69.400) Pacific Polar Research 42 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
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 –3 in the Sognefjord complex, which was the southern research site, and, in the north, 945 m –3 in Malangen and 89 m –3 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 –3 in the Sognefjord complex, 51 m –3 in Malangen and 11 m –3 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 –3 , 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. |
format |
Article in Journal/Newspaper |
author |
Ikenoue, Takahito Bjørklund, Kjell Rasmus Krabberød, Anders Kristian Nishino, Shigeto Wassmann, Paul |
spellingShingle |
Ikenoue, Takahito Bjørklund, Kjell Rasmus Krabberød, Anders Kristian Nishino, Shigeto Wassmann, Paul Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages |
author_facet |
Ikenoue, Takahito Bjørklund, Kjell Rasmus Krabberød, Anders Kristian Nishino, Shigeto Wassmann, Paul |
author_sort |
Ikenoue, Takahito |
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 |
title_short |
Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages |
title_full |
Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages |
title_fullStr |
Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages |
title_full_unstemmed |
Radiolaria and Phaeodaria (siliceous Rhizaria) in south-western and northern Norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages |
title_sort |
radiolaria and phaeodaria (siliceous rhizaria) in south-western and northern norwegian fjords during late summer 2016: dominant species and biomass in shallow-water assemblages |
publisher |
Norwegian Polar Institute |
publishDate |
2023 |
url |
https://hdl.handle.net/10037/31546 https://doi.org/10.33265/polar.v42.9584 |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) ENVELOPE(18.598,18.598,69.400,69.400) |
geographic |
Arctic Balsfjord Malangen Pacific |
geographic_facet |
Arctic Balsfjord Malangen Pacific |
genre |
Arctic Balsfjord Climate change Malangen Polar Research |
genre_facet |
Arctic Balsfjord Climate change Malangen Polar Research |
op_relation |
Polar Research 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 FRIDAID 2183654 doi:10.33265/polar.v42.9584 0800-0395 1751-8369 https://hdl.handle.net/10037/31546 |
op_rights |
Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by-nc/4.0 |
op_doi |
https://doi.org/10.33265/polar.v42.9584 |
container_title |
Polar Research |
container_volume |
42 |
_version_ |
1782331559304495104 |