The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord
Despite being a key zooplankton group, knowledge on krill biology from the Arctic is inadequate. The present study examine the functional biology and evaluate the trophic role of krill in the GodthAyenbsfjord (64 degrees N, 51 degrees W) SW Greenland, through a combination of fieldwork and laborator...
Published in: | Marine Biology |
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Online Access: | https://curis.ku.dk/portal/da/publications/the-functional-biology-and-trophic-role-of-krill-thysanoessa-raschii-in-a-greenlandic-fjord(6c447af0-3a0d-47cc-b26e-ceef45f705c4).html https://doi.org/10.1007/s00227-011-1657-z |
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ftcopenhagenunip:oai:pure.atira.dk:publications/6c447af0-3a0d-47cc-b26e-ceef45f705c4 2024-04-14T08:03:53+00:00 The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord Agersted, Mette Dalgaard Nielsen, Torkel Gissel Munk, Peter Vismann, B. Arendt, K.E. 2011-06 https://curis.ku.dk/portal/da/publications/the-functional-biology-and-trophic-role-of-krill-thysanoessa-raschii-in-a-greenlandic-fjord(6c447af0-3a0d-47cc-b26e-ceef45f705c4).html https://doi.org/10.1007/s00227-011-1657-z eng eng info:eu-repo/semantics/restrictedAccess Agersted , M D , Nielsen , T G , Munk , P , Vismann , B & Arendt , K E 2011 , ' The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord ' , Marine Biology , vol. 158 , no. 6 , pp. 1387-1402 . https://doi.org/10.1007/s00227-011-1657-z EUPHAUSIA-SUPERBA DANA MARGINAL ICE-ZONE COPEPOD ACARTIA-TONSA ANTARCTIC KRILL FEEDING-BEHAVIOR BODY-SIZE MEGANYCTIPHANES-NORVEGICA VERTICAL-DISTRIBUTION COASTAL WATERS FECAL MATERIAL article 2011 ftcopenhagenunip https://doi.org/10.1007/s00227-011-1657-z 2024-03-21T17:28:07Z Despite being a key zooplankton group, knowledge on krill biology from the Arctic is inadequate. The present study examine the functional biology and evaluate the trophic role of krill in the GodthAyenbsfjord (64 degrees N, 51 degrees W) SW Greenland, through a combination of fieldwork and laboratory experiments. Krill biomass was highest in the middle fjord and inner fjord, whereas no krill was found offshore. The dominating species Thysanoessa raschii revealed a type III functional response when fed with the diatom Thalassiosira weissflogii. At food saturation, T. raschii exhibited a daily ration of 1% body C d(-1). Furthermore, T. raschii was capable of exploiting plankton cells from 5 to 400 mu m, covering several trophic levels of the pelagic food web. The calculated grazing impact by T. raschii on the fjord plankton community was negligible. However, the schooling and migratory behaviour of krill will concentrate and elevate the grazing in specific areas of the euphotic zone Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Arctic Euphausia superba Greenland greenlandic Meganyctiphanes norvegica Thysanoessa raschii Zooplankton University of Copenhagen: Research Antarctic Arctic Greenland Marine Biology 158 6 1387 1402 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
EUPHAUSIA-SUPERBA DANA MARGINAL ICE-ZONE COPEPOD ACARTIA-TONSA ANTARCTIC KRILL FEEDING-BEHAVIOR BODY-SIZE MEGANYCTIPHANES-NORVEGICA VERTICAL-DISTRIBUTION COASTAL WATERS FECAL MATERIAL |
spellingShingle |
EUPHAUSIA-SUPERBA DANA MARGINAL ICE-ZONE COPEPOD ACARTIA-TONSA ANTARCTIC KRILL FEEDING-BEHAVIOR BODY-SIZE MEGANYCTIPHANES-NORVEGICA VERTICAL-DISTRIBUTION COASTAL WATERS FECAL MATERIAL Agersted, Mette Dalgaard Nielsen, Torkel Gissel Munk, Peter Vismann, B. Arendt, K.E. The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord |
topic_facet |
EUPHAUSIA-SUPERBA DANA MARGINAL ICE-ZONE COPEPOD ACARTIA-TONSA ANTARCTIC KRILL FEEDING-BEHAVIOR BODY-SIZE MEGANYCTIPHANES-NORVEGICA VERTICAL-DISTRIBUTION COASTAL WATERS FECAL MATERIAL |
description |
Despite being a key zooplankton group, knowledge on krill biology from the Arctic is inadequate. The present study examine the functional biology and evaluate the trophic role of krill in the GodthAyenbsfjord (64 degrees N, 51 degrees W) SW Greenland, through a combination of fieldwork and laboratory experiments. Krill biomass was highest in the middle fjord and inner fjord, whereas no krill was found offshore. The dominating species Thysanoessa raschii revealed a type III functional response when fed with the diatom Thalassiosira weissflogii. At food saturation, T. raschii exhibited a daily ration of 1% body C d(-1). Furthermore, T. raschii was capable of exploiting plankton cells from 5 to 400 mu m, covering several trophic levels of the pelagic food web. The calculated grazing impact by T. raschii on the fjord plankton community was negligible. However, the schooling and migratory behaviour of krill will concentrate and elevate the grazing in specific areas of the euphotic zone |
format |
Article in Journal/Newspaper |
author |
Agersted, Mette Dalgaard Nielsen, Torkel Gissel Munk, Peter Vismann, B. Arendt, K.E. |
author_facet |
Agersted, Mette Dalgaard Nielsen, Torkel Gissel Munk, Peter Vismann, B. Arendt, K.E. |
author_sort |
Agersted, Mette Dalgaard |
title |
The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord |
title_short |
The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord |
title_full |
The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord |
title_fullStr |
The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord |
title_full_unstemmed |
The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord |
title_sort |
functional biology and trophic role of krill ( thysanoessa raschii ) in a greenlandic fjord |
publishDate |
2011 |
url |
https://curis.ku.dk/portal/da/publications/the-functional-biology-and-trophic-role-of-krill-thysanoessa-raschii-in-a-greenlandic-fjord(6c447af0-3a0d-47cc-b26e-ceef45f705c4).html https://doi.org/10.1007/s00227-011-1657-z |
geographic |
Antarctic Arctic Greenland |
geographic_facet |
Antarctic Arctic Greenland |
genre |
Antarc* Antarctic Antarctic Krill Arctic Euphausia superba Greenland greenlandic Meganyctiphanes norvegica Thysanoessa raschii Zooplankton |
genre_facet |
Antarc* Antarctic Antarctic Krill Arctic Euphausia superba Greenland greenlandic Meganyctiphanes norvegica Thysanoessa raschii Zooplankton |
op_source |
Agersted , M D , Nielsen , T G , Munk , P , Vismann , B & Arendt , K E 2011 , ' The functional biology and trophic role of krill ( Thysanoessa raschii ) in a Greenlandic fjord ' , Marine Biology , vol. 158 , no. 6 , pp. 1387-1402 . https://doi.org/10.1007/s00227-011-1657-z |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00227-011-1657-z |
container_title |
Marine Biology |
container_volume |
158 |
container_issue |
6 |
container_start_page |
1387 |
op_container_end_page |
1402 |
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1796300198684655616 |