Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web
In both Polar Regions, sea ice environments are undergoing rapid environmental change. Because sea ice constitutes an important habitat for numerous species, as well as an important carbon source during critical periods of the year, these changes impact significantly on ecosystem functioning, biodiv...
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ftawi:oai:epic.awi.de:32800 2023-05-15T13:40:26+02:00 Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web Flores, Hauke van Franeker, Jan Andries Lange, Benjamin Siegel, Volker Kruse, Svenja Hunt, Brian Pakhomov, E. A. 2013 application/pdf https://epic.awi.de/id/eprint/32800/ https://epic.awi.de/id/eprint/32800/2/Flores-Polartagung-MAR2013.pdf https://hdl.handle.net/10013/epic.41338 https://hdl.handle.net/10013/epic.41338.d002 unknown https://epic.awi.de/id/eprint/32800/2/Flores-Polartagung-MAR2013.pdf https://hdl.handle.net/10013/epic.41338.d002 Flores, H. orcid:0000-0003-1617-5449 , van Franeker, J. A. , Lange, B. , Siegel, V. , Kruse, S. , Hunt, B. and Pakhomov, E. A. (2013) Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web , 25. Internationale Polartagung, University of Hamburg, 17 March 2013 - 22 March 2013 . hdl:10013/epic.41338 EPIC325. Internationale Polartagung, University of Hamburg, 2013-03-17-2013-03-22 Conference notRev 2013 ftawi 2021-12-24T15:38:34Z In both Polar Regions, sea ice environments are undergoing rapid environmental change. Because sea ice constitutes an important habitat for numerous species, as well as an important carbon source during critical periods of the year, these changes impact significantly on ecosystem functioning, biodiversity, species distribution and population sizes, including commercially exploited fish stocks. Species dwelling at the ice-water interface (e.g. Antarctic krill and Arctic cod) play a key role in this context as trophic carbon transmitters from the sea ice into pelagic food webs, and ultimately to the deep sea benthos. Quantifying under-ice communities was hampered in the past by the inaccessibility of the ice underside to conventional sampling gear. Using a new under-ice trawl, it could be shown that Antarctic krill concentrates under sea ice almost year-round, and that krill dwelling under ice are significantly under-estimated by pelagic nets and sonars. An Arctic expedition in 2012 using the same sampling gear brought evidence of a vivid under-ice community even in the biologically poor-considered central Arctic Ocean. Using a bio-environmental sensor array during under-ice fishing enabled fine-scale characterization of sea ice habitat properties as a basis for statistical modeling of under-ice species distribution. During the talk, past results from under-ice fishing in the Southern Ocean will be summarized, and complemented by preliminary results from the Arctic Ocean to elucidate similarities and differences of polar under-ice communities in both hemispheres. Conference Object Antarc* Antarctic Antarctic Krill Arctic Arctic cod Arctic Arctic Ocean Sea ice Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Antarctic Southern Ocean Arctic Ocean |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
In both Polar Regions, sea ice environments are undergoing rapid environmental change. Because sea ice constitutes an important habitat for numerous species, as well as an important carbon source during critical periods of the year, these changes impact significantly on ecosystem functioning, biodiversity, species distribution and population sizes, including commercially exploited fish stocks. Species dwelling at the ice-water interface (e.g. Antarctic krill and Arctic cod) play a key role in this context as trophic carbon transmitters from the sea ice into pelagic food webs, and ultimately to the deep sea benthos. Quantifying under-ice communities was hampered in the past by the inaccessibility of the ice underside to conventional sampling gear. Using a new under-ice trawl, it could be shown that Antarctic krill concentrates under sea ice almost year-round, and that krill dwelling under ice are significantly under-estimated by pelagic nets and sonars. An Arctic expedition in 2012 using the same sampling gear brought evidence of a vivid under-ice community even in the biologically poor-considered central Arctic Ocean. Using a bio-environmental sensor array during under-ice fishing enabled fine-scale characterization of sea ice habitat properties as a basis for statistical modeling of under-ice species distribution. During the talk, past results from under-ice fishing in the Southern Ocean will be summarized, and complemented by preliminary results from the Arctic Ocean to elucidate similarities and differences of polar under-ice communities in both hemispheres. |
format |
Conference Object |
author |
Flores, Hauke van Franeker, Jan Andries Lange, Benjamin Siegel, Volker Kruse, Svenja Hunt, Brian Pakhomov, E. A. |
spellingShingle |
Flores, Hauke van Franeker, Jan Andries Lange, Benjamin Siegel, Volker Kruse, Svenja Hunt, Brian Pakhomov, E. A. Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web |
author_facet |
Flores, Hauke van Franeker, Jan Andries Lange, Benjamin Siegel, Volker Kruse, Svenja Hunt, Brian Pakhomov, E. A. |
author_sort |
Flores, Hauke |
title |
Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web |
title_short |
Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web |
title_full |
Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web |
title_fullStr |
Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web |
title_full_unstemmed |
Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web |
title_sort |
ice matters. arctic and antarctic under-ice communities linking sea ice with the pelagic food web |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/32800/ https://epic.awi.de/id/eprint/32800/2/Flores-Polartagung-MAR2013.pdf https://hdl.handle.net/10013/epic.41338 https://hdl.handle.net/10013/epic.41338.d002 |
geographic |
Arctic Antarctic Southern Ocean Arctic Ocean |
geographic_facet |
Arctic Antarctic Southern Ocean Arctic Ocean |
genre |
Antarc* Antarctic Antarctic Krill Arctic Arctic cod Arctic Arctic Ocean Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Arctic Arctic cod Arctic Arctic Ocean Sea ice Southern Ocean |
op_source |
EPIC325. Internationale Polartagung, University of Hamburg, 2013-03-17-2013-03-22 |
op_relation |
https://epic.awi.de/id/eprint/32800/2/Flores-Polartagung-MAR2013.pdf https://hdl.handle.net/10013/epic.41338.d002 Flores, H. orcid:0000-0003-1617-5449 , van Franeker, J. A. , Lange, B. , Siegel, V. , Kruse, S. , Hunt, B. and Pakhomov, E. A. (2013) Ice matters. Arctic and Antarctic under-ice communities linking sea ice with the pelagic food web , 25. Internationale Polartagung, University of Hamburg, 17 March 2013 - 22 March 2013 . hdl:10013/epic.41338 |
_version_ |
1766133431735943168 |