Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring
The condition and survival of Antarctic krill (Euphausia superba) strongly depends on sea ice conditions during winter. How krill utilize sea ice depends on several factors such as region and developmental stage. A comprehensive understanding of sea ice habitat use by krill, however, remains largely...
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ftawi:oai:epic.awi.de:39313 2023-05-15T13:40:27+02:00 Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring Schaafsma, Fokje David, Carmen Pakhomov, E. A. Hunt, Brian P. V. Lange, Benjamin Flores, Hauke van Franeker, Jan Andries 2016 https://epic.awi.de/id/eprint/39313/ https://hdl.handle.net/10013/epic.46546 unknown SPRINGER Schaafsma, F. , David, C. , Pakhomov, E. A. , Hunt, B. P. V. , Lange, B. , Flores, H. orcid:0000-0003-1617-5449 and van Franeker, J. A. (2016) Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring , Polar Biology, 39 (9), pp. 1515-1526 . doi:10.1007/s00300-015-1877-7 <https://doi.org/10.1007/s00300-015-1877-7> , hdl:10013/epic.46546 EPIC3Polar Biology, SPRINGER, 39(9), pp. 1515-1526, ISSN: 0722-4060 Article isiRev 2016 ftawi https://doi.org/10.1007/s00300-015-1877-7 2021-12-24T15:40:57Z The condition and survival of Antarctic krill (Euphausia superba) strongly depends on sea ice conditions during winter. How krill utilize sea ice depends on several factors such as region and developmental stage. A comprehensive understanding of sea ice habitat use by krill, however, remains largely unknown. The aim of this study was to improve the understanding of the krill's interaction with the sea ice habitat during winter/early spring by conducting large-scale sampling of the ice-water interface (0-2 m) and comparing the size and developmental stage composition of krill with the pelagic population (0-500 m). Results show that the population in the northern Weddell Sea consisted mainly of krill that were less than one year old (age class 0; AC0), and that it was comprised of multiple cohorts. Size per developmental stage differed spatially, indicating that the krill likely were advected from various origins. The size distribution of krill differed between the two depth strata sampled. Larval stages with a relatively small size (mean 7 to 8 mm) dominated the upper two meter layer of the water column, while larger larvae and AC0 juveniles (mean 14 to 15 mm) were proportionally more abundant in the 0-500 m stratum. Our results show that, as krill mature, their vertical distribution and utilization of the sea ice appears to change gradually. This could be the result of changes in physiology and/or behaviour, as e.g. the krill's energy demand and swimming capacity increase with size and age. The degree of sea ice association will have an effect on large-scale spatial distribution patterns of AC0 krill and on predictions of the consequences of sea ice decline on their survival over winter. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Sea ice Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Weddell Sea Weddell Polar Biology 39 9 1515 1526 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The condition and survival of Antarctic krill (Euphausia superba) strongly depends on sea ice conditions during winter. How krill utilize sea ice depends on several factors such as region and developmental stage. A comprehensive understanding of sea ice habitat use by krill, however, remains largely unknown. The aim of this study was to improve the understanding of the krill's interaction with the sea ice habitat during winter/early spring by conducting large-scale sampling of the ice-water interface (0-2 m) and comparing the size and developmental stage composition of krill with the pelagic population (0-500 m). Results show that the population in the northern Weddell Sea consisted mainly of krill that were less than one year old (age class 0; AC0), and that it was comprised of multiple cohorts. Size per developmental stage differed spatially, indicating that the krill likely were advected from various origins. The size distribution of krill differed between the two depth strata sampled. Larval stages with a relatively small size (mean 7 to 8 mm) dominated the upper two meter layer of the water column, while larger larvae and AC0 juveniles (mean 14 to 15 mm) were proportionally more abundant in the 0-500 m stratum. Our results show that, as krill mature, their vertical distribution and utilization of the sea ice appears to change gradually. This could be the result of changes in physiology and/or behaviour, as e.g. the krill's energy demand and swimming capacity increase with size and age. The degree of sea ice association will have an effect on large-scale spatial distribution patterns of AC0 krill and on predictions of the consequences of sea ice decline on their survival over winter. |
format |
Article in Journal/Newspaper |
author |
Schaafsma, Fokje David, Carmen Pakhomov, E. A. Hunt, Brian P. V. Lange, Benjamin Flores, Hauke van Franeker, Jan Andries |
spellingShingle |
Schaafsma, Fokje David, Carmen Pakhomov, E. A. Hunt, Brian P. V. Lange, Benjamin Flores, Hauke van Franeker, Jan Andries Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring |
author_facet |
Schaafsma, Fokje David, Carmen Pakhomov, E. A. Hunt, Brian P. V. Lange, Benjamin Flores, Hauke van Franeker, Jan Andries |
author_sort |
Schaafsma, Fokje |
title |
Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring |
title_short |
Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring |
title_full |
Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring |
title_fullStr |
Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring |
title_full_unstemmed |
Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring |
title_sort |
size and stage composition of age class 0 antarctic krill (euphausia superba) in the ice-water interface layer during winter/early spring |
publisher |
SPRINGER |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/39313/ https://hdl.handle.net/10013/epic.46546 |
geographic |
Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Polar Biology Sea ice Weddell Sea |
op_source |
EPIC3Polar Biology, SPRINGER, 39(9), pp. 1515-1526, ISSN: 0722-4060 |
op_relation |
Schaafsma, F. , David, C. , Pakhomov, E. A. , Hunt, B. P. V. , Lange, B. , Flores, H. orcid:0000-0003-1617-5449 and van Franeker, J. A. (2016) Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring , Polar Biology, 39 (9), pp. 1515-1526 . doi:10.1007/s00300-015-1877-7 <https://doi.org/10.1007/s00300-015-1877-7> , hdl:10013/epic.46546 |
op_doi |
https://doi.org/10.1007/s00300-015-1877-7 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
9 |
container_start_page |
1515 |
op_container_end_page |
1526 |
_version_ |
1766134778532200448 |