Floating ice-algal aggregates below melting Arctic sea ice.
During two consecutive cruises to the Eastern Central Arctic in late summer 2012, we observed floating algal aggregates in the melt-water layer below and between melting ice floes of first-year pack ice. The macroscopic (1 – 15 cm in diameter) aggregates had a mucous consistency and were dominated b...
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Online Access: | https://epic.awi.de/id/eprint/34217/ https://epic.awi.de/id/eprint/34217/1/Assmy_et_al_2013.pdf https://hdl.handle.net/10013/epic.42551 https://hdl.handle.net/10013/epic.42551.d001 |
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ftawi:oai:epic.awi.de:34217 2024-09-15T17:51:47+00:00 Floating ice-algal aggregates below melting Arctic sea ice. Assmy, Philipp Ehn, Jens K. Fernandez Mendez, Mar Hop, Haakon Katlein, Christian Sundfjord, Arild Bluhm, Katrin Daase, Malin Engel, Anja Fransson, Agneta Granskog, Mats A. Hudson, Stephen R. Kristiansen, Svein Nicolaus, Marcel Peeken, Ilka Renner, Angelika H. H. Spreen, Gunnar Tatarek, Agnieszka Wiktor, Jozef 2013-10-16 application/pdf https://epic.awi.de/id/eprint/34217/ https://epic.awi.de/id/eprint/34217/1/Assmy_et_al_2013.pdf https://hdl.handle.net/10013/epic.42551 https://hdl.handle.net/10013/epic.42551.d001 unknown PUBLIC LIBRARY SCIENCE https://epic.awi.de/id/eprint/34217/1/Assmy_et_al_2013.pdf https://hdl.handle.net/10013/epic.42551.d001 Assmy, P. , Ehn, J. K. , Fernandez Mendez, M. , Hop, H. , Katlein, C. orcid:0000-0003-2422-0414 , Sundfjord, A. , Bluhm, K. , Daase, M. , Engel, A. , Fransson, A. , Granskog, M. A. , Hudson, S. R. , Kristiansen, S. , Nicolaus, M. orcid:0000-0003-0903-1746 , Peeken, I. orcid:0000-0003-1531-1664 , Renner, A. H. H. , Spreen, G. , Tatarek, A. and Wiktor, J. (2013) Floating ice-algal aggregates below melting Arctic sea ice. , PLoS ONE, 8 (10), e76599 . doi:10.1371/journal.pone.0076599 <https://doi.org/10.1371/journal.pone.0076599> , hdl:10013/epic.42551 EPIC3PLoS ONE, PUBLIC LIBRARY SCIENCE, 8(10), pp. e76599, ISSN: 1932-6203 Article isiRev 2013 ftawi https://doi.org/10.1371/journal.pone.0076599 2024-06-24T04:08:32Z During two consecutive cruises to the Eastern Central Arctic in late summer 2012, we observed floating algal aggregates in the melt-water layer below and between melting ice floes of first-year pack ice. The macroscopic (1 – 15 cm in diameter) aggregates had a mucous consistency and were dominated by typical ice-associated pennate diatoms embedded within the mucous matrix. Aggregates maintained buoyancy and accumulated just above a strong pycnocline that separated meltwater and seawater layers. We were able, for the first time, to obtain quantitative abundance and biomass estimates of these aggregates. Although their biomass and production on a square metre basis was small compared to ice-algal blooms, the floating ice-algal aggregates supported high levels of biological activity on the scale of the individual aggregate. In addition they constituted a food source for the ice-associated fauna as revealed by pigments indicative of zooplankton grazing, high abundance of naked ciliates, and ice amphipods associated with them. During the Arctic melt season, these floating aggregates likely play an important ecological role in an otherwise impoverished near-surface sea ice environment. Our findings provide important observations and measurements of a unique aggregate-based habitat during the 2012 record sea ice minimum year. Article in Journal/Newspaper Arctic Sea ice Zooplankton Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) PLoS ONE 8 10 e76599 |
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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 |
During two consecutive cruises to the Eastern Central Arctic in late summer 2012, we observed floating algal aggregates in the melt-water layer below and between melting ice floes of first-year pack ice. The macroscopic (1 – 15 cm in diameter) aggregates had a mucous consistency and were dominated by typical ice-associated pennate diatoms embedded within the mucous matrix. Aggregates maintained buoyancy and accumulated just above a strong pycnocline that separated meltwater and seawater layers. We were able, for the first time, to obtain quantitative abundance and biomass estimates of these aggregates. Although their biomass and production on a square metre basis was small compared to ice-algal blooms, the floating ice-algal aggregates supported high levels of biological activity on the scale of the individual aggregate. In addition they constituted a food source for the ice-associated fauna as revealed by pigments indicative of zooplankton grazing, high abundance of naked ciliates, and ice amphipods associated with them. During the Arctic melt season, these floating aggregates likely play an important ecological role in an otherwise impoverished near-surface sea ice environment. Our findings provide important observations and measurements of a unique aggregate-based habitat during the 2012 record sea ice minimum year. |
format |
Article in Journal/Newspaper |
author |
Assmy, Philipp Ehn, Jens K. Fernandez Mendez, Mar Hop, Haakon Katlein, Christian Sundfjord, Arild Bluhm, Katrin Daase, Malin Engel, Anja Fransson, Agneta Granskog, Mats A. Hudson, Stephen R. Kristiansen, Svein Nicolaus, Marcel Peeken, Ilka Renner, Angelika H. H. Spreen, Gunnar Tatarek, Agnieszka Wiktor, Jozef |
spellingShingle |
Assmy, Philipp Ehn, Jens K. Fernandez Mendez, Mar Hop, Haakon Katlein, Christian Sundfjord, Arild Bluhm, Katrin Daase, Malin Engel, Anja Fransson, Agneta Granskog, Mats A. Hudson, Stephen R. Kristiansen, Svein Nicolaus, Marcel Peeken, Ilka Renner, Angelika H. H. Spreen, Gunnar Tatarek, Agnieszka Wiktor, Jozef Floating ice-algal aggregates below melting Arctic sea ice. |
author_facet |
Assmy, Philipp Ehn, Jens K. Fernandez Mendez, Mar Hop, Haakon Katlein, Christian Sundfjord, Arild Bluhm, Katrin Daase, Malin Engel, Anja Fransson, Agneta Granskog, Mats A. Hudson, Stephen R. Kristiansen, Svein Nicolaus, Marcel Peeken, Ilka Renner, Angelika H. H. Spreen, Gunnar Tatarek, Agnieszka Wiktor, Jozef |
author_sort |
Assmy, Philipp |
title |
Floating ice-algal aggregates below melting Arctic sea ice. |
title_short |
Floating ice-algal aggregates below melting Arctic sea ice. |
title_full |
Floating ice-algal aggregates below melting Arctic sea ice. |
title_fullStr |
Floating ice-algal aggregates below melting Arctic sea ice. |
title_full_unstemmed |
Floating ice-algal aggregates below melting Arctic sea ice. |
title_sort |
floating ice-algal aggregates below melting arctic sea ice. |
publisher |
PUBLIC LIBRARY SCIENCE |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/34217/ https://epic.awi.de/id/eprint/34217/1/Assmy_et_al_2013.pdf https://hdl.handle.net/10013/epic.42551 https://hdl.handle.net/10013/epic.42551.d001 |
genre |
Arctic Sea ice Zooplankton |
genre_facet |
Arctic Sea ice Zooplankton |
op_source |
EPIC3PLoS ONE, PUBLIC LIBRARY SCIENCE, 8(10), pp. e76599, ISSN: 1932-6203 |
op_relation |
https://epic.awi.de/id/eprint/34217/1/Assmy_et_al_2013.pdf https://hdl.handle.net/10013/epic.42551.d001 Assmy, P. , Ehn, J. K. , Fernandez Mendez, M. , Hop, H. , Katlein, C. orcid:0000-0003-2422-0414 , Sundfjord, A. , Bluhm, K. , Daase, M. , Engel, A. , Fransson, A. , Granskog, M. A. , Hudson, S. R. , Kristiansen, S. , Nicolaus, M. orcid:0000-0003-0903-1746 , Peeken, I. orcid:0000-0003-1531-1664 , Renner, A. H. H. , Spreen, G. , Tatarek, A. and Wiktor, J. (2013) Floating ice-algal aggregates below melting Arctic sea ice. , PLoS ONE, 8 (10), e76599 . doi:10.1371/journal.pone.0076599 <https://doi.org/10.1371/journal.pone.0076599> , hdl:10013/epic.42551 |
op_doi |
https://doi.org/10.1371/journal.pone.0076599 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
10 |
container_start_page |
e76599 |
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1810293785941245952 |