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Acoustic Detection of Krill Scattering Layer in the Terra Nova Bay Polynya, Antarctica

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Cited 1 time in scopus
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dc.contributor.authorKang, Myounghee-
dc.contributor.authorFajaryanti, Rina-
dc.contributor.authorSon, Wuju-
dc.contributor.authorKim, Jeong-Hoon-
dc.contributor.authorLa, Hyoung Sul-
dc.date.accessioned2021-05-04T08:16:46Z-
dc.date.available2021-05-04T08:16:46Z-
dc.date.issued2020-11-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/11822-
dc.description.abstractKrill play a crucial role in the transfer of energy in the marine food web, connecting primary producers and the upper trophic levels in the Terra Nova Bay polynya (TNBP), which is part of the Ross Sea marine protected area. Despite the substantial ecological importance of krill, there are few studies on their distribution and abundance in the TNBP. An acoustic survey was conducted on 7-14 January 2019 in the TNBP, Ross Sea, using a Simrad EK60 echosounder (38 and 120 kHz) aboard the icebreaker RV Araon. The most commonly used range of the difference of the mean volume backscattering strength (MVBS) (2-16 dB) was applied to distinguish krill. The acoustic data (120 kHz) were extracted to examine the krill distribution characteristics. The study area was divided into low-value areas and high-value areas based on the third quartile of the nautical area scattering coefficient. The results showed that the krill aggregations were distributed in three layers at depths of 0-30 m, 70-110 m, and 270-300 m. The interpolated environmental parameters associated with the backscattering strength were compared. High-value areas of krill coincided with relatively low temperature, low salinity, and high chlorophyll, although very weak correlations were found. The primary goal of this study was to understand the vertical and horizontal distributions of krill acoustic biomass and to relate the observed patterns to the dominant environmental conditions.en_US
dc.languageEnglishen_US
dc.language.isoen_USen_US
dc.subjectEnvironmental Sciences & Ecologyen_US
dc.subjectMarine & Freshwater Biologyen_US
dc.subject.classificationAraonen_US
dc.titleAcoustic Detection of Krill Scattering Layer in the Terra Nova Bay Polynya, Antarcticaen_US
dc.title.alternative남극 테라 노바 베이 폴리 냐의 크릴 산란 층 음향 감지en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationKang, Myounghee, et al. 2020. "Acoustic Detection of Krill Scattering Layer in the Terra Nova Bay Polynya, Antarctica". <em>FRONTIERS IN MARINE SCIENCE</em>, 7(1): 584550-584563.en_US
dc.citation.titleFRONTIERS IN MARINE SCIENCEen_US
dc.citation.volume7en_US
dc.citation.number1en_US
dc.identifier.doi10.3389/fmars.2020.584550-
dc.citation.startPage584550en_US
dc.citation.endPage584563en_US
dc.description.articleClassificationSCIE-
dc.description.jcrRateJCR 2018:12.037en_US
dc.subject.keywordkrillen_US
dc.subject.keywordscattering layersen_US
dc.subject.keywordspatial distributionen_US
dc.subject.keywordTerra Nova Bay polynyaen_US
dc.subject.keywordAntarcticaen_US
dc.subject.keywordenvironmental attributesen_US
dc.identifier.localId2020-0180-
dc.identifier.scopusid2-s2.0-85097206082-
dc.identifier.wosid000594728800001-
Appears in Collections  
2020-2020, Variability of carbon pump and climate control in the Southern Ocean (20-20) / Park, Jisoo (PE20140)
2020-2020, Ecosystem Structure and Function of Marine Protected Area (MPA) in Antarctica (20-20) / Kim, Jeong-Hoon (PM20060)
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