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 by...
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Online Access: | https://oceanrep.geomar.de/id/eprint/22157/ https://oceanrep.geomar.de/id/eprint/22157/1/Assmy%20et%20al%202013%20PLOS%20ONE.pdf https://doi.org/10.1371/journal.pone.0076599 |
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ftoceanrep:oai:oceanrep.geomar.de:22157 2023-05-15T14:27:41+02:00 Floating Ice-Algal Aggregates below Melting Arctic Sea Ice Assmy, Philipp Ehn, Jens K. Fernández-Méndez, 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 text https://oceanrep.geomar.de/id/eprint/22157/ https://oceanrep.geomar.de/id/eprint/22157/1/Assmy%20et%20al%202013%20PLOS%20ONE.pdf https://doi.org/10.1371/journal.pone.0076599 en eng Public Library of Science https://oceanrep.geomar.de/id/eprint/22157/1/Assmy%20et%20al%202013%20PLOS%20ONE.pdf Assmy, P., Ehn, J. K., Fernández-Méndez, M., Hop, H., Katlein, C., Sundfjord, A., Bluhm, K., Daase, M., Engel, A. , Fransson, A., Granskog, M. A., Hudson, S. R., Kristiansen, S., Nicolaus, M., Peeken, I., Renner, A. H. H., Spreen, G., Tatarek, A. and Wiktor, J. (2013) Floating Ice-Algal Aggregates below Melting Arctic Sea Ice. Open Access PLoS ONE, 8 (10). e76599. DOI 10.1371/journal.pone.0076599 <https://doi.org/10.1371/journal.pone.0076599>. doi:10.1371/journal.pone.0076599 cc_by_3.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.1371/journal.pone.0076599 2023-04-07T15:10:30Z 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 Arctic Sea ice Zooplankton OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic PLoS ONE 8 10 e76599 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
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. Fernández-Méndez, 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. Fernández-Méndez, 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. Fernández-Méndez, 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 of Science |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/22157/ https://oceanrep.geomar.de/id/eprint/22157/1/Assmy%20et%20al%202013%20PLOS%20ONE.pdf https://doi.org/10.1371/journal.pone.0076599 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Sea ice Zooplankton |
genre_facet |
Arctic Arctic Sea ice Zooplankton |
op_relation |
https://oceanrep.geomar.de/id/eprint/22157/1/Assmy%20et%20al%202013%20PLOS%20ONE.pdf Assmy, P., Ehn, J. K., Fernández-Méndez, M., Hop, H., Katlein, C., Sundfjord, A., Bluhm, K., Daase, M., Engel, A. , Fransson, A., Granskog, M. A., Hudson, S. R., Kristiansen, S., Nicolaus, M., Peeken, I., Renner, A. H. H., Spreen, G., Tatarek, A. and Wiktor, J. (2013) Floating Ice-Algal Aggregates below Melting Arctic Sea Ice. Open Access PLoS ONE, 8 (10). e76599. DOI 10.1371/journal.pone.0076599 <https://doi.org/10.1371/journal.pone.0076599>. doi:10.1371/journal.pone.0076599 |
op_rights |
cc_by_3.0 info:eu-repo/semantics/openAccess |
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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1766301525618982912 |