Lipid composition and trophic relationships of krill species in a high Arctic fjord
Our study deals with the lipid biochemistry of the krill community in the ecosystem of the high Arctic Kongsfjord (Svalbard). During the last decades, Kongsfjord experienced a change in krill species composition due to recent increased advection of Atlantic water masses carrying characteristic borea...
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ftawi:oai:epic.awi.de:36514 2023-05-15T14:26:16+02:00 Lipid composition and trophic relationships of krill species in a high Arctic fjord Hünerlage, Kim Graeve, Martin Buchholz, Friedrich 2016 https://epic.awi.de/id/eprint/36514/ https://hdl.handle.net/10013/epic.44313 unknown SPRINGER Hünerlage, K. , Graeve, M. orcid:0000-0002-2294-1915 and Buchholz, F. (2016) Lipid composition and trophic relationships of krill species in a high Arctic fjord , Polar Biology, 39 , pp. 1803-1817 . doi:10.1007/s00300-014-1607-6 <https://doi.org/10.1007/s00300-014-1607-6> , hdl:10013/epic.44313 EPIC3Polar Biology, SPRINGER, 39, pp. 1803-1817, ISSN: 0722-4060 Article isiRev 2016 ftawi https://doi.org/10.1007/s00300-014-1607-6 2021-12-24T15:39:54Z Our study deals with the lipid biochemistry of the krill community in the ecosystem of the high Arctic Kongsfjord (Svalbard). During the last decades, Kongsfjord experienced a change in krill species composition due to recent increased advection of Atlantic water masses carrying characteristic boreal as well as subtropical-boreal euphausiids into the ecosystem. The lipid biochemistry and trophic relationships of the species recently inhabiting the Arctic water masses are scarcely known, although a change in a krill population may have a significant impact on the ecosystem. A comparison of nutrition and energy storage strategies, stable isotopes, lipid profiles and fatty acid compositions showed remarkable differences between the krill species. These reflected the diverse feeding behaviours and specific adaptations to the environments of their origin: the boreal Meganyctiphanes norvegica and subtropical Nematoscelis megalops appear more carnivorous, have significantly lower mean lipid contents (29 % and 10 %, respectively) and a different energy storage pattern (triacylglycerols and polar lipids, respectively) than the arcto-boreal Thysanoessa inermis, which consists of up to 54 % of lipids mainly stored as wax esters (> 40 %). These differences may have significant implications for the rapidly changing marine food-web of Kongsfjord - especially for higher trophic levels relying on the nutritional input of animal lipids. Article in Journal/Newspaper Arctic Arctic Kongsfjord* Meganyctiphanes norvegica Polar Biology Svalbard Thysanoessa inermis Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Svalbard Kongsfjord ENVELOPE(29.319,29.319,70.721,70.721) Polar Biology 39 10 1803 1817 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Our study deals with the lipid biochemistry of the krill community in the ecosystem of the high Arctic Kongsfjord (Svalbard). During the last decades, Kongsfjord experienced a change in krill species composition due to recent increased advection of Atlantic water masses carrying characteristic boreal as well as subtropical-boreal euphausiids into the ecosystem. The lipid biochemistry and trophic relationships of the species recently inhabiting the Arctic water masses are scarcely known, although a change in a krill population may have a significant impact on the ecosystem. A comparison of nutrition and energy storage strategies, stable isotopes, lipid profiles and fatty acid compositions showed remarkable differences between the krill species. These reflected the diverse feeding behaviours and specific adaptations to the environments of their origin: the boreal Meganyctiphanes norvegica and subtropical Nematoscelis megalops appear more carnivorous, have significantly lower mean lipid contents (29 % and 10 %, respectively) and a different energy storage pattern (triacylglycerols and polar lipids, respectively) than the arcto-boreal Thysanoessa inermis, which consists of up to 54 % of lipids mainly stored as wax esters (> 40 %). These differences may have significant implications for the rapidly changing marine food-web of Kongsfjord - especially for higher trophic levels relying on the nutritional input of animal lipids. |
format |
Article in Journal/Newspaper |
author |
Hünerlage, Kim Graeve, Martin Buchholz, Friedrich |
spellingShingle |
Hünerlage, Kim Graeve, Martin Buchholz, Friedrich Lipid composition and trophic relationships of krill species in a high Arctic fjord |
author_facet |
Hünerlage, Kim Graeve, Martin Buchholz, Friedrich |
author_sort |
Hünerlage, Kim |
title |
Lipid composition and trophic relationships of krill species in a high Arctic fjord |
title_short |
Lipid composition and trophic relationships of krill species in a high Arctic fjord |
title_full |
Lipid composition and trophic relationships of krill species in a high Arctic fjord |
title_fullStr |
Lipid composition and trophic relationships of krill species in a high Arctic fjord |
title_full_unstemmed |
Lipid composition and trophic relationships of krill species in a high Arctic fjord |
title_sort |
lipid composition and trophic relationships of krill species in a high arctic fjord |
publisher |
SPRINGER |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/36514/ https://hdl.handle.net/10013/epic.44313 |
long_lat |
ENVELOPE(29.319,29.319,70.721,70.721) |
geographic |
Arctic Svalbard Kongsfjord |
geographic_facet |
Arctic Svalbard Kongsfjord |
genre |
Arctic Arctic Kongsfjord* Meganyctiphanes norvegica Polar Biology Svalbard Thysanoessa inermis |
genre_facet |
Arctic Arctic Kongsfjord* Meganyctiphanes norvegica Polar Biology Svalbard Thysanoessa inermis |
op_source |
EPIC3Polar Biology, SPRINGER, 39, pp. 1803-1817, ISSN: 0722-4060 |
op_relation |
Hünerlage, K. , Graeve, M. orcid:0000-0002-2294-1915 and Buchholz, F. (2016) Lipid composition and trophic relationships of krill species in a high Arctic fjord , Polar Biology, 39 , pp. 1803-1817 . doi:10.1007/s00300-014-1607-6 <https://doi.org/10.1007/s00300-014-1607-6> , hdl:10013/epic.44313 |
op_doi |
https://doi.org/10.1007/s00300-014-1607-6 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
10 |
container_start_page |
1803 |
op_container_end_page |
1817 |
_version_ |
1766298755508731904 |