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, whi...
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Norwegian Polar Institute (NPI)
2023
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Online Access: | http://hdl.handle.net/10852/105760 https://doi.org/10.33265/polar.v42.9584 |
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ftoslouniv:oai:www.duo.uio.no:10852/105760 2023-12-10T09:46:16+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 ENEngelskEnglishRadiolaria 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 2023-10-11T11:02:37Z http://hdl.handle.net/10852/105760 https://doi.org/10.33265/polar.v42.9584 EN eng Norwegian Polar Institute (NPI) 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. Polar Research. 2023, 42 http://hdl.handle.net/10852/105760 2183654 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Polar Research&rft.volume=42&rft.spage=&rft.date=2023 Polar Research 42 17 https://doi.org/10.33265/polar.v42.9584 Attribution-NonCommercial 4.0 International https://creativecommons.org/licenses/by-nc/4.0/ 0800-0395 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2023 ftoslouniv https://doi.org/10.33265/polar.v42.9584 2023-11-15T23:39:43Z 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 Universitet i Oslo: Digitale utgivelser ved UiO (DUO) 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 |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
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 (NPI) |
publishDate |
2023 |
url |
http://hdl.handle.net/10852/105760 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_source |
0800-0395 |
op_relation |
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. Polar Research. 2023, 42 http://hdl.handle.net/10852/105760 2183654 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Polar Research&rft.volume=42&rft.spage=&rft.date=2023 Polar Research 42 17 https://doi.org/10.33265/polar.v42.9584 |
op_rights |
Attribution-NonCommercial 4.0 International 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_ |
1784889612221546496 |