Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover
Arctic summer sea ice extent is decreasing and thinning, forming melt ponds that cover more than 50% of the sea ice area during the peak of the melting season. Despite of this, ice algal communities in melt ponds are understudied and so are their contribution to the Arctic Ocean primary production a...
Published in: | Frontiers in Marine Science |
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Language: | English |
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Online Access: | https://doi.org/10.3389/fmars.2022.841720 |
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ftzenodo:oai:zenodo.org:6627636 2024-09-15T17:53:17+00:00 Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover Hancke, Kasper Kristiansen, Svein Lund-Hansen, Lars Chresten 2022-04-12 https://doi.org/10.3389/fmars.2022.841720 eng eng Zenodo https://zenodo.org/communities/face-it https://zenodo.org/communities/eu https://doi.org/10.3389/fmars.2022.841720 oai:zenodo.org:6627636 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode ice algae melt ponds oxygen production and consumption photosynthesis carbon turnover Arctic Ocean info:eu-repo/semantics/article 2022 ftzenodo https://doi.org/10.3389/fmars.2022.841720 2024-07-25T17:27:19Z Arctic summer sea ice extent is decreasing and thinning, forming melt ponds that cover more than 50% of the sea ice area during the peak of the melting season. Despite of this, ice algal communities in melt ponds are understudied and so are their contribution to the Arctic Ocean primary production and carbon turnover. While melt ponds have been considered as low productive, recent studies suggest that accumulated ice algal potentially facilitate high and yet overlooked rates of carbon turnover. Here we report on ice algal communities forming dense mats not previously described, collected from melt ponds in the northern Barents Sea in July. We document on distinct layered and brown colored mats with high carbon assimilation and net primary production rates compared to ice algal communities and aggregates, in fact comparable to benthic microalgae at temperate tidal flats. Rates of gross and net primary production, as well as community respiration rates were obtained from oxygen micro profiling, and carbon assimilation calculations were supported by 14 C incubations, pigment analysis and light microscopy examinations. The melt pond algal mats consisted of distinct colored layers and differed from aggregates with a consisted layered structure. We accordingly propose the term melt pond algal mats, and further speculate that these dense ice algal mats may provide an important yet overlooked source of organic carbon in the Arctic food-web. A foodweb component likely very sensitive to climate driven changes in the Arctic Ocean and pan-Arctic seas. Article in Journal/Newspaper Arctic Ocean Barents Sea ice algae Sea ice Zenodo Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
ice algae melt ponds oxygen production and consumption photosynthesis carbon turnover Arctic Ocean |
spellingShingle |
ice algae melt ponds oxygen production and consumption photosynthesis carbon turnover Arctic Ocean Hancke, Kasper Kristiansen, Svein Lund-Hansen, Lars Chresten Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover |
topic_facet |
ice algae melt ponds oxygen production and consumption photosynthesis carbon turnover Arctic Ocean |
description |
Arctic summer sea ice extent is decreasing and thinning, forming melt ponds that cover more than 50% of the sea ice area during the peak of the melting season. Despite of this, ice algal communities in melt ponds are understudied and so are their contribution to the Arctic Ocean primary production and carbon turnover. While melt ponds have been considered as low productive, recent studies suggest that accumulated ice algal potentially facilitate high and yet overlooked rates of carbon turnover. Here we report on ice algal communities forming dense mats not previously described, collected from melt ponds in the northern Barents Sea in July. We document on distinct layered and brown colored mats with high carbon assimilation and net primary production rates compared to ice algal communities and aggregates, in fact comparable to benthic microalgae at temperate tidal flats. Rates of gross and net primary production, as well as community respiration rates were obtained from oxygen micro profiling, and carbon assimilation calculations were supported by 14 C incubations, pigment analysis and light microscopy examinations. The melt pond algal mats consisted of distinct colored layers and differed from aggregates with a consisted layered structure. We accordingly propose the term melt pond algal mats, and further speculate that these dense ice algal mats may provide an important yet overlooked source of organic carbon in the Arctic food-web. A foodweb component likely very sensitive to climate driven changes in the Arctic Ocean and pan-Arctic seas. |
format |
Article in Journal/Newspaper |
author |
Hancke, Kasper Kristiansen, Svein Lund-Hansen, Lars Chresten |
author_facet |
Hancke, Kasper Kristiansen, Svein Lund-Hansen, Lars Chresten |
author_sort |
Hancke, Kasper |
title |
Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover |
title_short |
Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover |
title_full |
Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover |
title_fullStr |
Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover |
title_full_unstemmed |
Highly Productive Ice Algal Mats in Arctic Melt Ponds: Primary Production and Carbon Turnover |
title_sort |
highly productive ice algal mats in arctic melt ponds: primary production and carbon turnover |
publisher |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.841720 |
genre |
Arctic Ocean Barents Sea ice algae Sea ice |
genre_facet |
Arctic Ocean Barents Sea ice algae Sea ice |
op_relation |
https://zenodo.org/communities/face-it https://zenodo.org/communities/eu https://doi.org/10.3389/fmars.2022.841720 oai:zenodo.org:6627636 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3389/fmars.2022.841720 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1810295325162733568 |