Sea-ice associated carbon flux in Arctic spring
The Svalbard region faces drastic environmental changes, including sea-ice loss and “Atlantification” of Arctic waters, caused primarily by climate warming. These changes result in shifts in the sea-iceassociated (sympagic) community structure, with consequences for the sympagic food web and carbon...
Published in: | Elementa: Science of the Anthropocene |
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ftunivwagenin:oai:library.wur.nl:wurpubs/588215 2024-04-28T08:04:01+00:00 Sea-ice associated carbon flux in Arctic spring Ehrlich, Julia Bluhm, B.A. Peeken, Ilka Massicotte, Philippe Schaafsma, F.L. Castellani, Giulia Brandt, Angelika Flores, Hauke 2021 application/pdf https://research.wur.nl/en/publications/sea-ice-associated-carbon-flux-in-arctic-spring https://doi.org/10.1525/elementa.2020.00169 en eng https://edepot.wur.nl/555586 https://research.wur.nl/en/publications/sea-ice-associated-carbon-flux-in-arctic-spring doi:10.1525/elementa.2020.00169 https://creativecommons.org/licenses/by/4.0/ Wageningen University & Research Elementa: Science of Anthropocene 9 (2021) 1 ISSN: 2325-1026 Arctic Ocean Biomass Carbon demand Primary demand Secondary production Sympagic fauna Article/Letter to editor 2021 ftunivwagenin https://doi.org/10.1525/elementa.2020.00169 2024-04-03T15:01:56Z The Svalbard region faces drastic environmental changes, including sea-ice loss and “Atlantification” of Arctic waters, caused primarily by climate warming. These changes result in shifts in the sea-iceassociated (sympagic) community structure, with consequences for the sympagic food web and carbon cycling. To evaluate the role of sympagic biota as a source, sink, and transmitter of carbon, we sampled pack ice and under-ice water (0–2 m) north of Svalbard in spring 2015 by sea-ice coring and under-ice trawling. We estimated biomass and primary production of ice algae and under-ice phytoplankton as well as biomass, carbon demand, and secondary production of sea-ice meiofauna (>10 mm) and under-ice fauna (>300 mm). Sea-ice meiofauna biomass (0.1–2.8 mg C m–2) was dominated by harpacticoid copepods (92%), nauplii (4%), and Ciliophora (3%). Under-ice fauna biomass (3.2–62.7 mg C m–2) was dominated by Calanus copepods (54%). Appendicularia contributed 23% through their high abundance at one station. Herbivorous sympagic fauna dominated the carbon demand across the study area, estimated at 2 mg C m–2 day–1 for ice algae and 4 mg C m–2 day–1 for phytoplankton. This demand was covered by the mean primary production of ice algae (11 mg C m–2 day–1) and phytoplankton (30 mg C m–2 day–1). Hence, potentially 35 mg C m–2 day–1 of algal material could sink from the sympagic realm to deeper layers.The demand of carnivorous under-ice fauna (0.3 mg C m–2 day–1) was barely covered by sympagic secondary production (0.3 mg C m–2 day–1). Our study emphasizes the importance of under-ice fauna for the carbon flux from sea ice to pelagic and benthic habitats and provides a baseline for future comparisons in the context of climate change Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change ice algae Phytoplankton Sea ice Svalbard Copepods Wageningen UR (University & Research Centre): Digital Library Elementa: Science of the Anthropocene 9 1 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
Arctic Ocean Biomass Carbon demand Primary demand Secondary production Sympagic fauna |
spellingShingle |
Arctic Ocean Biomass Carbon demand Primary demand Secondary production Sympagic fauna Ehrlich, Julia Bluhm, B.A. Peeken, Ilka Massicotte, Philippe Schaafsma, F.L. Castellani, Giulia Brandt, Angelika Flores, Hauke Sea-ice associated carbon flux in Arctic spring |
topic_facet |
Arctic Ocean Biomass Carbon demand Primary demand Secondary production Sympagic fauna |
description |
The Svalbard region faces drastic environmental changes, including sea-ice loss and “Atlantification” of Arctic waters, caused primarily by climate warming. These changes result in shifts in the sea-iceassociated (sympagic) community structure, with consequences for the sympagic food web and carbon cycling. To evaluate the role of sympagic biota as a source, sink, and transmitter of carbon, we sampled pack ice and under-ice water (0–2 m) north of Svalbard in spring 2015 by sea-ice coring and under-ice trawling. We estimated biomass and primary production of ice algae and under-ice phytoplankton as well as biomass, carbon demand, and secondary production of sea-ice meiofauna (>10 mm) and under-ice fauna (>300 mm). Sea-ice meiofauna biomass (0.1–2.8 mg C m–2) was dominated by harpacticoid copepods (92%), nauplii (4%), and Ciliophora (3%). Under-ice fauna biomass (3.2–62.7 mg C m–2) was dominated by Calanus copepods (54%). Appendicularia contributed 23% through their high abundance at one station. Herbivorous sympagic fauna dominated the carbon demand across the study area, estimated at 2 mg C m–2 day–1 for ice algae and 4 mg C m–2 day–1 for phytoplankton. This demand was covered by the mean primary production of ice algae (11 mg C m–2 day–1) and phytoplankton (30 mg C m–2 day–1). Hence, potentially 35 mg C m–2 day–1 of algal material could sink from the sympagic realm to deeper layers.The demand of carnivorous under-ice fauna (0.3 mg C m–2 day–1) was barely covered by sympagic secondary production (0.3 mg C m–2 day–1). Our study emphasizes the importance of under-ice fauna for the carbon flux from sea ice to pelagic and benthic habitats and provides a baseline for future comparisons in the context of climate change |
format |
Article in Journal/Newspaper |
author |
Ehrlich, Julia Bluhm, B.A. Peeken, Ilka Massicotte, Philippe Schaafsma, F.L. Castellani, Giulia Brandt, Angelika Flores, Hauke |
author_facet |
Ehrlich, Julia Bluhm, B.A. Peeken, Ilka Massicotte, Philippe Schaafsma, F.L. Castellani, Giulia Brandt, Angelika Flores, Hauke |
author_sort |
Ehrlich, Julia |
title |
Sea-ice associated carbon flux in Arctic spring |
title_short |
Sea-ice associated carbon flux in Arctic spring |
title_full |
Sea-ice associated carbon flux in Arctic spring |
title_fullStr |
Sea-ice associated carbon flux in Arctic spring |
title_full_unstemmed |
Sea-ice associated carbon flux in Arctic spring |
title_sort |
sea-ice associated carbon flux in arctic spring |
publishDate |
2021 |
url |
https://research.wur.nl/en/publications/sea-ice-associated-carbon-flux-in-arctic-spring https://doi.org/10.1525/elementa.2020.00169 |
genre |
Arctic Arctic Arctic Ocean Climate change ice algae Phytoplankton Sea ice Svalbard Copepods |
genre_facet |
Arctic Arctic Arctic Ocean Climate change ice algae Phytoplankton Sea ice Svalbard Copepods |
op_source |
Elementa: Science of Anthropocene 9 (2021) 1 ISSN: 2325-1026 |
op_relation |
https://edepot.wur.nl/555586 https://research.wur.nl/en/publications/sea-ice-associated-carbon-flux-in-arctic-spring doi:10.1525/elementa.2020.00169 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ Wageningen University & Research |
op_doi |
https://doi.org/10.1525/elementa.2020.00169 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
9 |
container_issue |
1 |
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1797574947618422784 |