Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea
The rapid decline of Arctic sea ice makes understanding sympagic (ice-associated) biology a particularly urgent task. Here we studied the poorly known seasonality of sea-ice protist and meiofauna community composition, abundance and biomass in the bottom 30 cm of sea ice in relation to ice propertie...
Published in: | Progress in Oceanography |
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Online Access: | http://hdl.handle.net/10852/105756 https://doi.org/10.1016/j.pocean.2023.103128 |
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ftoslouniv:oai:www.duo.uio.no:10852/105756 2023-12-10T09:46:16+01:00 Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea ENEngelskEnglishSeasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea Marquardt, Miriam Goraguer, Lucie Hélène Marie Assmy, Philipp Kurt Wolf Bluhm, Bodil Annikki Ulla Barbro Aaboe, Signe Down, Emily Patrohay, Evan Edvardsen, Bente Tatarek, Agnieszka Smola, Zofia Wiktor, Józef Gradinger, Rolf Rudolf 2023-09-29T12:22:52Z http://hdl.handle.net/10852/105756 https://doi.org/10.1016/j.pocean.2023.103128 EN eng NFR/276730 MI/181090 Marquardt, Miriam Goraguer, Lucie Hélène Marie Assmy, Philipp Kurt Wolf Bluhm, Bodil Annikki Ulla Barbro Aaboe, Signe Down, Emily Patrohay, Evan Edvardsen, Bente Tatarek, Agnieszka Smola, Zofia Wiktor, Józef Gradinger, Rolf Rudolf . Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea. Progress in Oceanography. 2023, 218 http://hdl.handle.net/10852/105756 2180275 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Progress in Oceanography&rft.volume=218&rft.spage=&rft.date=2023 Progress in Oceanography 218 20 https://doi.org/10.1016/j.pocean.2023.103128 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 0079-6611 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2023 ftoslouniv https://doi.org/10.1016/j.pocean.2023.103128 2023-11-15T23:39:43Z The rapid decline of Arctic sea ice makes understanding sympagic (ice-associated) biology a particularly urgent task. Here we studied the poorly known seasonality of sea-ice protist and meiofauna community composition, abundance and biomass in the bottom 30 cm of sea ice in relation to ice properties and ice drift trajectories in the northwestern Barents Sea. We expected low abundances during the polar night and highest values during spring prior to ice melt. Sea ice conditions and Chlorophyll a concentrations varied strongly seasonally, while particulate organic carbon concentrations were fairly stable throughout the seasons. In December to May we sampled growing first-year ice, while in July and August melting older sea ice dominated. Low sea-ice biota abundances in March could be related to the late onset of ice formation and short time period for ice algae and uni- and multicellular grazers to establish themselves. Pennate diatoms, such as Navicula spp. and Nitzschia spp., dominated the bottom ice algal communities and were present during all seasons. Except for May, ciliates, dinoflagellates, particularly of the order Gymnodiales, and small-sized flagellates were co-dominant. Ice meiofauna (here including large ciliates and foraminifers) was comprised mainly of harpacticoid copepods, copepod nauplii, rotifers, large ciliates and occasionally acoels and foraminifers, with dominance of omnivore species throughout the seasons. Large ciliates comprised the most abundant meiofauna taxon at all ice stations and seasons (50-90 %) but did not necessarily dominate the biomass. While ice melt might have released and reduced ice algal biomass in July, meiofauna abundance remained high, indicating different annual cycles of protist versus meiofauna taxa. In May highest Chlorophyll a concentrations (29.4 mg m-2) and protist biomass (107 mg C m-2) occurred, while highest meiofauna abundance was found in August (23.9 x 103 Ind. m-2) and biomass in December (0.6 mg C m-2). The abundant December ice biota community further ... Article in Journal/Newspaper Arctic Barents Sea ice algae polar night Sea ice Copepods Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Barents Sea Progress in Oceanography 218 103128 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
The rapid decline of Arctic sea ice makes understanding sympagic (ice-associated) biology a particularly urgent task. Here we studied the poorly known seasonality of sea-ice protist and meiofauna community composition, abundance and biomass in the bottom 30 cm of sea ice in relation to ice properties and ice drift trajectories in the northwestern Barents Sea. We expected low abundances during the polar night and highest values during spring prior to ice melt. Sea ice conditions and Chlorophyll a concentrations varied strongly seasonally, while particulate organic carbon concentrations were fairly stable throughout the seasons. In December to May we sampled growing first-year ice, while in July and August melting older sea ice dominated. Low sea-ice biota abundances in March could be related to the late onset of ice formation and short time period for ice algae and uni- and multicellular grazers to establish themselves. Pennate diatoms, such as Navicula spp. and Nitzschia spp., dominated the bottom ice algal communities and were present during all seasons. Except for May, ciliates, dinoflagellates, particularly of the order Gymnodiales, and small-sized flagellates were co-dominant. Ice meiofauna (here including large ciliates and foraminifers) was comprised mainly of harpacticoid copepods, copepod nauplii, rotifers, large ciliates and occasionally acoels and foraminifers, with dominance of omnivore species throughout the seasons. Large ciliates comprised the most abundant meiofauna taxon at all ice stations and seasons (50-90 %) but did not necessarily dominate the biomass. While ice melt might have released and reduced ice algal biomass in July, meiofauna abundance remained high, indicating different annual cycles of protist versus meiofauna taxa. In May highest Chlorophyll a concentrations (29.4 mg m-2) and protist biomass (107 mg C m-2) occurred, while highest meiofauna abundance was found in August (23.9 x 103 Ind. m-2) and biomass in December (0.6 mg C m-2). The abundant December ice biota community further ... |
format |
Article in Journal/Newspaper |
author |
Marquardt, Miriam Goraguer, Lucie Hélène Marie Assmy, Philipp Kurt Wolf Bluhm, Bodil Annikki Ulla Barbro Aaboe, Signe Down, Emily Patrohay, Evan Edvardsen, Bente Tatarek, Agnieszka Smola, Zofia Wiktor, Józef Gradinger, Rolf Rudolf |
spellingShingle |
Marquardt, Miriam Goraguer, Lucie Hélène Marie Assmy, Philipp Kurt Wolf Bluhm, Bodil Annikki Ulla Barbro Aaboe, Signe Down, Emily Patrohay, Evan Edvardsen, Bente Tatarek, Agnieszka Smola, Zofia Wiktor, Józef Gradinger, Rolf Rudolf Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea |
author_facet |
Marquardt, Miriam Goraguer, Lucie Hélène Marie Assmy, Philipp Kurt Wolf Bluhm, Bodil Annikki Ulla Barbro Aaboe, Signe Down, Emily Patrohay, Evan Edvardsen, Bente Tatarek, Agnieszka Smola, Zofia Wiktor, Józef Gradinger, Rolf Rudolf |
author_sort |
Marquardt, Miriam |
title |
Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea |
title_short |
Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea |
title_full |
Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea |
title_fullStr |
Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea |
title_full_unstemmed |
Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea |
title_sort |
seasonal dynamics of sea-ice protist and meiofauna in the northwestern barents sea |
publishDate |
2023 |
url |
http://hdl.handle.net/10852/105756 https://doi.org/10.1016/j.pocean.2023.103128 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea ice algae polar night Sea ice Copepods |
genre_facet |
Arctic Barents Sea ice algae polar night Sea ice Copepods |
op_source |
0079-6611 |
op_relation |
NFR/276730 MI/181090 Marquardt, Miriam Goraguer, Lucie Hélène Marie Assmy, Philipp Kurt Wolf Bluhm, Bodil Annikki Ulla Barbro Aaboe, Signe Down, Emily Patrohay, Evan Edvardsen, Bente Tatarek, Agnieszka Smola, Zofia Wiktor, Józef Gradinger, Rolf Rudolf . Seasonal dynamics of sea-ice protist and meiofauna in the northwestern Barents Sea. Progress in Oceanography. 2023, 218 http://hdl.handle.net/10852/105756 2180275 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Progress in Oceanography&rft.volume=218&rft.spage=&rft.date=2023 Progress in Oceanography 218 20 https://doi.org/10.1016/j.pocean.2023.103128 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1016/j.pocean.2023.103128 |
container_title |
Progress in Oceanography |
container_volume |
218 |
container_start_page |
103128 |
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1784889612446990336 |