High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica
High densities of ice krill Euphausia crystallorophias were observed along six acoustic transects within the Amundsen Sea Coastal Polynya, Antarctica. Two-frequency acoustic backscatter data was examined in the austral summers of January 2011 and February 2012. A dB identification window (Sv120−38)...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2015
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/508427/ https://nora.nerc.ac.uk/id/eprint/508427/1/High%20density%20of%20ice%20krill%20AAM.pdf https://doi.org/10.1016/j.dsr.2014.09.002 |
id |
ftnerc:oai:nora.nerc.ac.uk:508427 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:508427 2023-05-15T13:23:45+02:00 High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica La, Hyoung Sul Lee, Hyungbeen Fielding, Sophie Kang, Donhyug Ha, Ho Kyung Atkinson, Angus Park, Jisoo Siegel, Volker Lee, Sang Hoon Shin, Hyoung Chul 2015-01 text http://nora.nerc.ac.uk/id/eprint/508427/ https://nora.nerc.ac.uk/id/eprint/508427/1/High%20density%20of%20ice%20krill%20AAM.pdf https://doi.org/10.1016/j.dsr.2014.09.002 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/508427/1/High%20density%20of%20ice%20krill%20AAM.pdf La, Hyoung Sul; Lee, Hyungbeen; Fielding, Sophie orcid:0000-0002-3152-4742 Kang, Donhyug; Ha, Ho Kyung; Atkinson, Angus; Park, Jisoo; Siegel, Volker; Lee, Sang Hoon; Shin, Hyoung Chul. 2015 High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica. Deep Sea Research Part I: Oceanographic Research Papers, 95. 75-84. https://doi.org/10.1016/j.dsr.2014.09.002 <https://doi.org/10.1016/j.dsr.2014.09.002> Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.1016/j.dsr.2014.09.002 2023-02-04T19:40:20Z High densities of ice krill Euphausia crystallorophias were observed along six acoustic transects within the Amundsen Sea Coastal Polynya, Antarctica. Two-frequency acoustic backscatter data was examined in the austral summers of January 2011 and February 2012. A dB identification window (Sv120−38) identified ice krill dominating the acoustic backscatter. The density of ice krill, calculated with the stochastic distorted-wave born approximation model, ranged between 4.5 and 30 g wet mass m−2 for each transect (a mean of 16 g wet mass m−2 for all transects), these high values are an order of magnitude higher than recorded previously in the Ross Sea Polynya. High densities were detected along the ice shelf and near the boundary between pack ice and coastal polynya, and we postulate that these could be important habitats for ice krill. The high densities observed along the transects make ice krill a potentially important, but poorly known contributor to these high-latitude shelf food webs. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctica Ice Shelf Ross Sea Natural Environment Research Council: NERC Open Research Archive Austral Ross Sea Amundsen Sea Deep Sea Research Part I: Oceanographic Research Papers 95 75 84 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
High densities of ice krill Euphausia crystallorophias were observed along six acoustic transects within the Amundsen Sea Coastal Polynya, Antarctica. Two-frequency acoustic backscatter data was examined in the austral summers of January 2011 and February 2012. A dB identification window (Sv120−38) identified ice krill dominating the acoustic backscatter. The density of ice krill, calculated with the stochastic distorted-wave born approximation model, ranged between 4.5 and 30 g wet mass m−2 for each transect (a mean of 16 g wet mass m−2 for all transects), these high values are an order of magnitude higher than recorded previously in the Ross Sea Polynya. High densities were detected along the ice shelf and near the boundary between pack ice and coastal polynya, and we postulate that these could be important habitats for ice krill. The high densities observed along the transects make ice krill a potentially important, but poorly known contributor to these high-latitude shelf food webs. |
format |
Article in Journal/Newspaper |
author |
La, Hyoung Sul Lee, Hyungbeen Fielding, Sophie Kang, Donhyug Ha, Ho Kyung Atkinson, Angus Park, Jisoo Siegel, Volker Lee, Sang Hoon Shin, Hyoung Chul |
spellingShingle |
La, Hyoung Sul Lee, Hyungbeen Fielding, Sophie Kang, Donhyug Ha, Ho Kyung Atkinson, Angus Park, Jisoo Siegel, Volker Lee, Sang Hoon Shin, Hyoung Chul High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica |
author_facet |
La, Hyoung Sul Lee, Hyungbeen Fielding, Sophie Kang, Donhyug Ha, Ho Kyung Atkinson, Angus Park, Jisoo Siegel, Volker Lee, Sang Hoon Shin, Hyoung Chul |
author_sort |
La, Hyoung Sul |
title |
High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica |
title_short |
High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica |
title_full |
High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica |
title_fullStr |
High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica |
title_full_unstemmed |
High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica |
title_sort |
high density of ice krill (euphausia crystallorophias) in the amundsen sea coastal polynya, antarctica |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/508427/ https://nora.nerc.ac.uk/id/eprint/508427/1/High%20density%20of%20ice%20krill%20AAM.pdf https://doi.org/10.1016/j.dsr.2014.09.002 |
geographic |
Austral Ross Sea Amundsen Sea |
geographic_facet |
Austral Ross Sea Amundsen Sea |
genre |
Amundsen Sea Antarc* Antarctica Ice Shelf Ross Sea |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Shelf Ross Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/508427/1/High%20density%20of%20ice%20krill%20AAM.pdf La, Hyoung Sul; Lee, Hyungbeen; Fielding, Sophie orcid:0000-0002-3152-4742 Kang, Donhyug; Ha, Ho Kyung; Atkinson, Angus; Park, Jisoo; Siegel, Volker; Lee, Sang Hoon; Shin, Hyoung Chul. 2015 High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica. Deep Sea Research Part I: Oceanographic Research Papers, 95. 75-84. https://doi.org/10.1016/j.dsr.2014.09.002 <https://doi.org/10.1016/j.dsr.2014.09.002> |
op_doi |
https://doi.org/10.1016/j.dsr.2014.09.002 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
95 |
container_start_page |
75 |
op_container_end_page |
84 |
_version_ |
1766374739894337536 |