DataSheet1.PDF
During the N-ICE2015 drift expedition north-west of Svalbard, we observed the establishment and development of algal communities in first-year ice (FYI) ridges and at the snow-ice interface. Despite some indications of being hot spots for biological activity, ridges are under-studied largely because...
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ftfrontimediafig:oai:figshare.com:article/5971735 2023-05-15T13:59:35+02:00 DataSheet1.PDF Mar Fernández-Méndez Lasse M. Olsen Hanna M. Kauko Amelie Meyer Anja Rösel Ioanna Merkouriadi Christopher J. Mundy Jens K. Ehn A. Malin Johansson Penelope M. Wagner Åse Ervik Brian K. Sorrell Pedro Duarte Anette Wold Haakon Hop Philipp Assmy 2018-03-12T04:33:53Z https://doi.org/10.3389/fmars.2018.00075.s001 https://figshare.com/articles/DataSheet1_PDF/5971735 unknown doi:10.3389/fmars.2018.00075.s001 https://figshare.com/articles/DataSheet1_PDF/5971735 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic ecosystem ice algae phytoplankton infiltration communities sea-ice ridges community composition climate change Dataset 2018 ftfrontimediafig https://doi.org/10.3389/fmars.2018.00075.s001 2018-03-14T23:56:26Z During the N-ICE2015 drift expedition north-west of Svalbard, we observed the establishment and development of algal communities in first-year ice (FYI) ridges and at the snow-ice interface. Despite some indications of being hot spots for biological activity, ridges are under-studied largely because they are complex structures that are difficult to sample. Snow infiltration communities can grow at the snow-ice interface when flooded. They have been commonly observed in the Antarctic, but rarely in the Arctic, where flooding is less common mainly due to a lower snow-to-ice thickness ratio. Combining biomass measurements and algal community analysis with under-ice irradiance and current measurements as well as light modeling, we comprehensively describe these two algal habitats in an Arctic pack ice environment. High biomass accumulation in ridges was facilitated by complex surfaces for algal deposition and attachment, increased light availability, and protection against strong under-ice currents. Notably, specific locations within the ridges were found to host distinct ice algal communities. The pennate diatoms Nitzschia frigida and Navicula species dominated the underside and inclined walls of submerged ice blocks, while the centric diatom Shionodiscus bioculatus dominated the top surfaces of the submerged ice blocks. Higher light levels than those in and below the sea ice, low mesozooplankton grazing, and physical concentration likely contributed to the high algal biomass at the snow-ice interface. These snow infiltration communities were dominated by Phaeocystis pouchetii and chain-forming pelagic diatoms (Fragilariopsis oceanica and Chaetoceros gelidus). Ridges are likely to form more frequently in a thinner and more dynamic ice pack, while the predicted increase in Arctic precipitation in some regions in combination with the thinning Arctic icescape might lead to larger areas of sea ice with negative freeboard and subsequent flooding during the melt season. Therefore, these two habitats are likely to become ... Dataset Antarc* Antarctic Arctic Climate change ice algae ice pack Phytoplankton Sea ice Svalbard Frontiers: Figshare Antarctic Arctic Svalbard The Antarctic |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic ecosystem ice algae phytoplankton infiltration communities sea-ice ridges community composition climate change |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic ecosystem ice algae phytoplankton infiltration communities sea-ice ridges community composition climate change Mar Fernández-Méndez Lasse M. Olsen Hanna M. Kauko Amelie Meyer Anja Rösel Ioanna Merkouriadi Christopher J. Mundy Jens K. Ehn A. Malin Johansson Penelope M. Wagner Åse Ervik Brian K. Sorrell Pedro Duarte Anette Wold Haakon Hop Philipp Assmy DataSheet1.PDF |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Arctic ecosystem ice algae phytoplankton infiltration communities sea-ice ridges community composition climate change |
description |
During the N-ICE2015 drift expedition north-west of Svalbard, we observed the establishment and development of algal communities in first-year ice (FYI) ridges and at the snow-ice interface. Despite some indications of being hot spots for biological activity, ridges are under-studied largely because they are complex structures that are difficult to sample. Snow infiltration communities can grow at the snow-ice interface when flooded. They have been commonly observed in the Antarctic, but rarely in the Arctic, where flooding is less common mainly due to a lower snow-to-ice thickness ratio. Combining biomass measurements and algal community analysis with under-ice irradiance and current measurements as well as light modeling, we comprehensively describe these two algal habitats in an Arctic pack ice environment. High biomass accumulation in ridges was facilitated by complex surfaces for algal deposition and attachment, increased light availability, and protection against strong under-ice currents. Notably, specific locations within the ridges were found to host distinct ice algal communities. The pennate diatoms Nitzschia frigida and Navicula species dominated the underside and inclined walls of submerged ice blocks, while the centric diatom Shionodiscus bioculatus dominated the top surfaces of the submerged ice blocks. Higher light levels than those in and below the sea ice, low mesozooplankton grazing, and physical concentration likely contributed to the high algal biomass at the snow-ice interface. These snow infiltration communities were dominated by Phaeocystis pouchetii and chain-forming pelagic diatoms (Fragilariopsis oceanica and Chaetoceros gelidus). Ridges are likely to form more frequently in a thinner and more dynamic ice pack, while the predicted increase in Arctic precipitation in some regions in combination with the thinning Arctic icescape might lead to larger areas of sea ice with negative freeboard and subsequent flooding during the melt season. Therefore, these two habitats are likely to become ... |
format |
Dataset |
author |
Mar Fernández-Méndez Lasse M. Olsen Hanna M. Kauko Amelie Meyer Anja Rösel Ioanna Merkouriadi Christopher J. Mundy Jens K. Ehn A. Malin Johansson Penelope M. Wagner Åse Ervik Brian K. Sorrell Pedro Duarte Anette Wold Haakon Hop Philipp Assmy |
author_facet |
Mar Fernández-Méndez Lasse M. Olsen Hanna M. Kauko Amelie Meyer Anja Rösel Ioanna Merkouriadi Christopher J. Mundy Jens K. Ehn A. Malin Johansson Penelope M. Wagner Åse Ervik Brian K. Sorrell Pedro Duarte Anette Wold Haakon Hop Philipp Assmy |
author_sort |
Mar Fernández-Méndez |
title |
DataSheet1.PDF |
title_short |
DataSheet1.PDF |
title_full |
DataSheet1.PDF |
title_fullStr |
DataSheet1.PDF |
title_full_unstemmed |
DataSheet1.PDF |
title_sort |
datasheet1.pdf |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00075.s001 https://figshare.com/articles/DataSheet1_PDF/5971735 |
geographic |
Antarctic Arctic Svalbard The Antarctic |
geographic_facet |
Antarctic Arctic Svalbard The Antarctic |
genre |
Antarc* Antarctic Arctic Climate change ice algae ice pack Phytoplankton Sea ice Svalbard |
genre_facet |
Antarc* Antarctic Arctic Climate change ice algae ice pack Phytoplankton Sea ice Svalbard |
op_relation |
doi:10.3389/fmars.2018.00075.s001 https://figshare.com/articles/DataSheet1_PDF/5971735 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2018.00075.s001 |
_version_ |
1766268192860143616 |