Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland
In June 2010 four krill species were collected in Godtha°bsfjord, SW Greenland, namely Thysanoessa raschii, T. inermis, T. longicaudata and Meganyctiphanes norvegica. A transect from offshore Fyllas Bank to the inner Godtha°bsfjord revealed a zonation of the species in relation to hydrography. Offsh...
Published in: | Journal of Plankton Research |
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Language: | English |
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2014
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Online Access: | https://orbit.dtu.dk/en/publications/6d9039c3-c03b-419c-8a9d-73a923fc945c https://doi.org/10.1093/plankt/fbt139 |
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ftdtupubl:oai:pure.atira.dk:publications/6d9039c3-c03b-419c-8a9d-73a923fc945c 2023-12-24T10:12:13+01:00 Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland Agersted, Mette Dalgaard Nielsen, Torkel Gissel 2014 https://orbit.dtu.dk/en/publications/6d9039c3-c03b-419c-8a9d-73a923fc945c https://doi.org/10.1093/plankt/fbt139 eng eng info:eu-repo/grantAgreement/EC/FP7/264933 https://orbit.dtu.dk/en/publications/6d9039c3-c03b-419c-8a9d-73a923fc945c info:eu-repo/semantics/closedAccess Agersted , M D & Nielsen , T G 2014 , ' Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland ' , Journal of Plankton Research , vol. 36 , no. 3 , pp. 800-815 . https://doi.org/10.1093/plankt/fbt139 article 2014 ftdtupubl https://doi.org/10.1093/plankt/fbt139 2023-11-29T23:59:59Z In June 2010 four krill species were collected in Godtha°bsfjord, SW Greenland, namely Thysanoessa raschii, T. inermis, T. longicaudata and Meganyctiphanes norvegica. A transect from offshore Fyllas Bank to the inner Godtha°bsfjord revealed a zonation of the species in relation to hydrography. Offshore, in the Atlantic-influenced water, the Atlantic T. longicaudata dominated. All individuals of T. longicaudata found offshore were carrying spermatophores. Within the fjord T. raschii and T. inermis were present in high numbers but the former dominated. The boreal M. norvegica were only present in the inner part of the fjord. Presence of only 1-year-old individuals and no fertilized females suggests the population is sustained by advection of M. norvegica from offshore waters. Krill community abundance and biomass were lowest offshore and peaked in the innermost part of Godtha°bsfjord. Thysanoessa inermis matured after 2 years, while T. raschii matured after 1 and 2 years, respectively, depending on temperature The present study suggests that a warmer future will favour Atlantic species and result in a more diverse self-sustainable krill community in the Godtha°bsfjord. Article in Journal/Newspaper Arctic Arctic Godthåbsfjord Greenland Meganyctiphanes norvegica Thysanoessa raschii Thysanoessa inermis Technical University of Denmark: DTU Orbit Arctic Fyllas Bank ENVELOPE(-53.000,-53.000,64.000,64.000) Greenland Journal of Plankton Research 36 3 800 815 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
In June 2010 four krill species were collected in Godtha°bsfjord, SW Greenland, namely Thysanoessa raschii, T. inermis, T. longicaudata and Meganyctiphanes norvegica. A transect from offshore Fyllas Bank to the inner Godtha°bsfjord revealed a zonation of the species in relation to hydrography. Offshore, in the Atlantic-influenced water, the Atlantic T. longicaudata dominated. All individuals of T. longicaudata found offshore were carrying spermatophores. Within the fjord T. raschii and T. inermis were present in high numbers but the former dominated. The boreal M. norvegica were only present in the inner part of the fjord. Presence of only 1-year-old individuals and no fertilized females suggests the population is sustained by advection of M. norvegica from offshore waters. Krill community abundance and biomass were lowest offshore and peaked in the innermost part of Godtha°bsfjord. Thysanoessa inermis matured after 2 years, while T. raschii matured after 1 and 2 years, respectively, depending on temperature The present study suggests that a warmer future will favour Atlantic species and result in a more diverse self-sustainable krill community in the Godtha°bsfjord. |
format |
Article in Journal/Newspaper |
author |
Agersted, Mette Dalgaard Nielsen, Torkel Gissel |
spellingShingle |
Agersted, Mette Dalgaard Nielsen, Torkel Gissel Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland |
author_facet |
Agersted, Mette Dalgaard Nielsen, Torkel Gissel |
author_sort |
Agersted, Mette Dalgaard |
title |
Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland |
title_short |
Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland |
title_full |
Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland |
title_fullStr |
Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland |
title_full_unstemmed |
Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland |
title_sort |
krill diversity and population structure along the sub-arctic godthåbsfjord, sw greenland |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/6d9039c3-c03b-419c-8a9d-73a923fc945c https://doi.org/10.1093/plankt/fbt139 |
long_lat |
ENVELOPE(-53.000,-53.000,64.000,64.000) |
geographic |
Arctic Fyllas Bank Greenland |
geographic_facet |
Arctic Fyllas Bank Greenland |
genre |
Arctic Arctic Godthåbsfjord Greenland Meganyctiphanes norvegica Thysanoessa raschii Thysanoessa inermis |
genre_facet |
Arctic Arctic Godthåbsfjord Greenland Meganyctiphanes norvegica Thysanoessa raschii Thysanoessa inermis |
op_source |
Agersted , M D & Nielsen , T G 2014 , ' Krill diversity and population structure along the sub-Arctic Godthåbsfjord, SW Greenland ' , Journal of Plankton Research , vol. 36 , no. 3 , pp. 800-815 . https://doi.org/10.1093/plankt/fbt139 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/264933 https://orbit.dtu.dk/en/publications/6d9039c3-c03b-419c-8a9d-73a923fc945c |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1093/plankt/fbt139 |
container_title |
Journal of Plankton Research |
container_volume |
36 |
container_issue |
3 |
container_start_page |
800 |
op_container_end_page |
815 |
_version_ |
1786173220715495424 |