Distribution of algal aggregates under summer sea ice in the Central Arctic
The sea ice cover of the Arctic Ocean has changed dramatically in the last decades, and the resulting consequences for the sea-ice-associated ecosystem remain difficult to assess. Algal aggregates underneath sea ice are of great importance for the ice-associated ecosystem and the pelagic-benthic cou...
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ftawi:oai:epic.awi.de:36930 2024-09-15T17:51:25+00:00 Distribution of algal aggregates under summer sea ice in the Central Arctic Katlein, Christian Fernandez Mendez, Mar Wenzhöfer, Frank Nicolaus, Marcel 2014-12-17 application/pdf https://epic.awi.de/id/eprint/36930/ https://epic.awi.de/id/eprint/36930/1/katlein_2014b_PB_distribution_of_algal_aggregates.pdf https://hdl.handle.net/10013/epic.44687 https://hdl.handle.net/10013/epic.44687.d001 unknown SPRINGER https://epic.awi.de/id/eprint/36930/1/katlein_2014b_PB_distribution_of_algal_aggregates.pdf https://hdl.handle.net/10013/epic.44687.d001 Katlein, C. orcid:0000-0003-2422-0414 , Fernandez Mendez, M. , Wenzhöfer, F. orcid:0000-0002-4621-0586 and Nicolaus, M. orcid:0000-0003-0903-1746 (2014) Distribution of algal aggregates under summer sea ice in the Central Arctic , Polar Biology . doi:10.1007/s00300-014-1634-3 <https://doi.org/10.1007/s00300-014-1634-3> , hdl:10013/epic.44687 info:eu-repo/semantics/openAccess EPIC3Polar Biology, SPRINGER, ISSN: 0722-4060 Article isiRev info:eu-repo/semantics/article 2014 ftawi https://doi.org/10.1007/s00300-014-1634-3 2024-06-24T04:11:05Z The sea ice cover of the Arctic Ocean has changed dramatically in the last decades, and the resulting consequences for the sea-ice-associated ecosystem remain difficult to assess. Algal aggregates underneath sea ice are of great importance for the ice-associated ecosystem and the pelagic-benthic coupling. However, the frequency and distribution of their occurrence is not well quantified. During the IceArc expedition (ARK-27/3) of RV Polarstern in late summer 2012, we observed different types of algal aggregates floating underneath various ice types in the Central Arctic basins. We investigated the spatial distribution of ice algal aggregates and quantified their biomass, using under-ice image surveys obtained by an upward-looking camera on a remotely operated vehicle. On basin scale, filamentous aggregates of Melosira arctica are more frequently found in the inner part of the Central Arctic pack ice, while rounded aggregates mainly formed by pennate diatoms are found closer to the ice edge, under melting sea ice. On the scale of an ice floe, the distribution of algal aggregates in late summer is mainly regulated by the topography of the ice underside, with aggregates accumulating in dome-shaped structures and at the edges of pressure ridges. The average biomass of the aggregates from our sites and season was 0.1–6.0 mg C m−2. However, depending on the approach used, differences in orders of magnitude for biomass estimates may occur. This highlights the difficulties of upscaling observations and comparing results from surveys conducted using different methods or on different spatial scales. Article in Journal/Newspaper Arctic Arctic Ocean Polar Biology Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Polar Biology 38 5 719 731 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The sea ice cover of the Arctic Ocean has changed dramatically in the last decades, and the resulting consequences for the sea-ice-associated ecosystem remain difficult to assess. Algal aggregates underneath sea ice are of great importance for the ice-associated ecosystem and the pelagic-benthic coupling. However, the frequency and distribution of their occurrence is not well quantified. During the IceArc expedition (ARK-27/3) of RV Polarstern in late summer 2012, we observed different types of algal aggregates floating underneath various ice types in the Central Arctic basins. We investigated the spatial distribution of ice algal aggregates and quantified their biomass, using under-ice image surveys obtained by an upward-looking camera on a remotely operated vehicle. On basin scale, filamentous aggregates of Melosira arctica are more frequently found in the inner part of the Central Arctic pack ice, while rounded aggregates mainly formed by pennate diatoms are found closer to the ice edge, under melting sea ice. On the scale of an ice floe, the distribution of algal aggregates in late summer is mainly regulated by the topography of the ice underside, with aggregates accumulating in dome-shaped structures and at the edges of pressure ridges. The average biomass of the aggregates from our sites and season was 0.1–6.0 mg C m−2. However, depending on the approach used, differences in orders of magnitude for biomass estimates may occur. This highlights the difficulties of upscaling observations and comparing results from surveys conducted using different methods or on different spatial scales. |
format |
Article in Journal/Newspaper |
author |
Katlein, Christian Fernandez Mendez, Mar Wenzhöfer, Frank Nicolaus, Marcel |
spellingShingle |
Katlein, Christian Fernandez Mendez, Mar Wenzhöfer, Frank Nicolaus, Marcel Distribution of algal aggregates under summer sea ice in the Central Arctic |
author_facet |
Katlein, Christian Fernandez Mendez, Mar Wenzhöfer, Frank Nicolaus, Marcel |
author_sort |
Katlein, Christian |
title |
Distribution of algal aggregates under summer sea ice in the Central Arctic |
title_short |
Distribution of algal aggregates under summer sea ice in the Central Arctic |
title_full |
Distribution of algal aggregates under summer sea ice in the Central Arctic |
title_fullStr |
Distribution of algal aggregates under summer sea ice in the Central Arctic |
title_full_unstemmed |
Distribution of algal aggregates under summer sea ice in the Central Arctic |
title_sort |
distribution of algal aggregates under summer sea ice in the central arctic |
publisher |
SPRINGER |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/36930/ https://epic.awi.de/id/eprint/36930/1/katlein_2014b_PB_distribution_of_algal_aggregates.pdf https://hdl.handle.net/10013/epic.44687 https://hdl.handle.net/10013/epic.44687.d001 |
genre |
Arctic Arctic Ocean Polar Biology Sea ice |
genre_facet |
Arctic Arctic Ocean Polar Biology Sea ice |
op_source |
EPIC3Polar Biology, SPRINGER, ISSN: 0722-4060 |
op_relation |
https://epic.awi.de/id/eprint/36930/1/katlein_2014b_PB_distribution_of_algal_aggregates.pdf https://hdl.handle.net/10013/epic.44687.d001 Katlein, C. orcid:0000-0003-2422-0414 , Fernandez Mendez, M. , Wenzhöfer, F. orcid:0000-0002-4621-0586 and Nicolaus, M. orcid:0000-0003-0903-1746 (2014) Distribution of algal aggregates under summer sea ice in the Central Arctic , Polar Biology . doi:10.1007/s00300-014-1634-3 <https://doi.org/10.1007/s00300-014-1634-3> , hdl:10013/epic.44687 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00300-014-1634-3 |
container_title |
Polar Biology |
container_volume |
38 |
container_issue |
5 |
container_start_page |
719 |
op_container_end_page |
731 |
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1810293309291102208 |