Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation
Factors influencing the fate of ice algae released from melting sea ice were studied during a R V Polarstern cruise (EPOS Leg 2) to the northwestern Weddell Sea. The large-scale phytoplankton distribution patterns across the receding ice edge and small-scale profiling of the water column adjacent to...
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1991
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Online Access: | https://oceanrep.geomar.de/id/eprint/8257/ https://oceanrep.geomar.de/id/eprint/8257/1/Riebesell.pdf https://doi.org/10.1007/BF00238457 |
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ftoceanrep:oai:oceanrep.geomar.de:8257 2023-05-15T16:36:32+02:00 Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation Riebesell, Ulf Schloss, I. Smetacek, V. 1991 text https://oceanrep.geomar.de/id/eprint/8257/ https://oceanrep.geomar.de/id/eprint/8257/1/Riebesell.pdf https://doi.org/10.1007/BF00238457 en eng Springer https://oceanrep.geomar.de/id/eprint/8257/1/Riebesell.pdf Riebesell, U. , Schloss, I. and Smetacek, V. (1991) Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation. Polar Biology, 11 . pp. 239-248. DOI 10.1007/BF00238457 <https://doi.org/10.1007/BF00238457>. doi:10.1007/BF00238457 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1991 ftoceanrep https://doi.org/10.1007/BF00238457 2023-04-07T14:56:25Z Factors influencing the fate of ice algae released from melting sea ice were studied during a R V Polarstern cruise (EPOS Leg 2) to the northwestern Weddell Sea. The large-scale phytoplankton distribution patterns across the receding ice edge and small-scale profiling of the water column adjacent to melting ice floes indicated marked patchiness on both scales. The contribution of typical ice algae to the phytoplankton was not significant. In experiments simulating the conditions during sea ice melting, ice algae revealed a strong propensity to form aggregates. Differences in the aggregation potential were found for algal assemblages collected from the ice interior and the infiltration layer. Although all algal species collected from the ice were also found in aggregates, the species composition of dispersed and aggregated algae differed significantly. Aggregates were of a characteristic structure consisting of monospecific microaggregates which are likely to have formed in the minute brine pockets and channels within the ice. Sinking rates of aggregates were three orders of magnitude higher than those of dispersed ice algae. These observations, combined with the negligible seeding effect of ice algae found during this study, suggest that ice algae released from the melting sea ice are subject to rapid sedimentation. High grazing pressure at the ice edge of the investigation area is another factor eliminating ice algae released during melting. Data presented here were collected during the European Polarstern Study (EPOS) sponsored by the European Science Foundation Article in Journal/Newspaper ice algae Polar Biology Sea ice Weddell Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Weddell Weddell Sea Polar Biology 11 4 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Factors influencing the fate of ice algae released from melting sea ice were studied during a R V Polarstern cruise (EPOS Leg 2) to the northwestern Weddell Sea. The large-scale phytoplankton distribution patterns across the receding ice edge and small-scale profiling of the water column adjacent to melting ice floes indicated marked patchiness on both scales. The contribution of typical ice algae to the phytoplankton was not significant. In experiments simulating the conditions during sea ice melting, ice algae revealed a strong propensity to form aggregates. Differences in the aggregation potential were found for algal assemblages collected from the ice interior and the infiltration layer. Although all algal species collected from the ice were also found in aggregates, the species composition of dispersed and aggregated algae differed significantly. Aggregates were of a characteristic structure consisting of monospecific microaggregates which are likely to have formed in the minute brine pockets and channels within the ice. Sinking rates of aggregates were three orders of magnitude higher than those of dispersed ice algae. These observations, combined with the negligible seeding effect of ice algae found during this study, suggest that ice algae released from the melting sea ice are subject to rapid sedimentation. High grazing pressure at the ice edge of the investigation area is another factor eliminating ice algae released during melting. Data presented here were collected during the European Polarstern Study (EPOS) sponsored by the European Science Foundation |
format |
Article in Journal/Newspaper |
author |
Riebesell, Ulf Schloss, I. Smetacek, V. |
spellingShingle |
Riebesell, Ulf Schloss, I. Smetacek, V. Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation |
author_facet |
Riebesell, Ulf Schloss, I. Smetacek, V. |
author_sort |
Riebesell, Ulf |
title |
Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation |
title_short |
Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation |
title_full |
Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation |
title_fullStr |
Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation |
title_full_unstemmed |
Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation |
title_sort |
aggregation of algae released from melting sea ice: implications for seeding and sedimentation |
publisher |
Springer |
publishDate |
1991 |
url |
https://oceanrep.geomar.de/id/eprint/8257/ https://oceanrep.geomar.de/id/eprint/8257/1/Riebesell.pdf https://doi.org/10.1007/BF00238457 |
geographic |
Weddell Weddell Sea |
geographic_facet |
Weddell Weddell Sea |
genre |
ice algae Polar Biology Sea ice Weddell Sea |
genre_facet |
ice algae Polar Biology Sea ice Weddell Sea |
op_relation |
https://oceanrep.geomar.de/id/eprint/8257/1/Riebesell.pdf Riebesell, U. , Schloss, I. and Smetacek, V. (1991) Aggregation of algae released from melting sea ice: Implications for seeding and sedimentation. Polar Biology, 11 . pp. 239-248. DOI 10.1007/BF00238457 <https://doi.org/10.1007/BF00238457>. doi:10.1007/BF00238457 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/BF00238457 |
container_title |
Polar Biology |
container_volume |
11 |
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4 |
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1766026866084282368 |