High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica SCIE SCOPUS

Cited 16 time in WEB OF SCIENCE Cited 16 time in Scopus
Title
High density of ice krill (Euphausia crystallorophias) in the Amundsen sea coastal polynya, Antarctica
Author(s)
La, Hyoung Sul; Lee, Hyungbeen; Fielding, Sophie; Kang, Donhyug; Ha, Ho Kyung; Atkinson, Angus; Park, Jisoo; Siegel, Volker; Lee, SangHoon; Shin, Hyoung Chul
KIOST Author(s)
Kang, Don Hyug(강돈혁)
Publication Year
2015-01
Abstract
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. (C) 2014 Elsevier Ltd. All rights reserved.
ISSN
0967-0637
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2569
DOI
10.1016/j.dsr.2014.09.002
Bibliographic Citation
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, v.95, pp.75 - 84, 2015
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
SOUTHERN-OCEAN; WEDDELL SEA; ROSS-SEA; DISTRIBUTION PATTERNS; TARGET-STRENGTH; AUSTRAL SUMMER; DEEP-WATER; PRYDZ BAY; PACK-ICE; SUPERBA
Keywords
Ice krill (Euphausia crystallorophias); krill identification; Acoustic data; Coastal polynya; Amundsen Sea
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Marine security,Underwater Acoustics,해양방위,수중음향

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