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Ex situ echo sounder target strengths of ice krill Euphausia crystallorophias
Ice krill is the keystone species in the neritic ecosystem in the Southern Ocean, where it replaces the more oceanic Antarctic krill. It is essential to understand the variation of target strength (TS in dB re l m^2) with the different body size to accurately estimate ice krill stocks. However, ther...
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Published in: | Chinese journal of oceanology and limnology 2015-05, Vol.33 (3), p.802-808 |
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description | Ice krill is the keystone species in the neritic ecosystem in the Southern Ocean, where it replaces the more oceanic Antarctic krill. It is essential to understand the variation of target strength (TS in dB re l m^2) with the different body size to accurately estimate ice krill stocks. However, there is comparatively little knowledge of the acoustic backscatter of ice krill. The TS of individual, formalin-preserved, tethered ice krill was measured in a freshwater test tank at 38, 120, and 200 kHz with a calibrated split-beam echo sounder system. Mean TS was obtained from 21 individual ice krill with a broad range of body lengths (L: 13-36 iron). The length (L, mm) to wet weight (W; mg) relationship for ice krill was 11/=0.001 21g~103~L35s (R2=0.96). The mean TS-to-length relationship were TS38kHz=-177.4+57log10(L), (R^2=0.86); TS120kHz= -129.9+31.561ogf0(L), (R2=0.87); and TS200kHz=-117.6+24.661ogre(L), (R2=0.84). Empirical estimates of the relationship between the TS and body length of ice krill were established at 38, 120, and 200 kHz and compared with predictions obtained from both the linear regression model of Greene et al. (1991) and the Stochastic Distorted Wave Born Approximation (SDWBA) model. This result might be applied to improve acoustic detection and density estimation of ice krill in the Southern Ocean. Further comparative studies are needed with in situ target strength including various body lengths of ice krill. |
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It is essential to understand the variation of target strength (TS in dB re l m^2) with the different body size to accurately estimate ice krill stocks. However, there is comparatively little knowledge of the acoustic backscatter of ice krill. The TS of individual, formalin-preserved, tethered ice krill was measured in a freshwater test tank at 38, 120, and 200 kHz with a calibrated split-beam echo sounder system. Mean TS was obtained from 21 individual ice krill with a broad range of body lengths (L: 13-36 iron). The length (L, mm) to wet weight (W; mg) relationship for ice krill was 11/=0.001 21g~103~L35s (R2=0.96). The mean TS-to-length relationship were TS38kHz=-177.4+57log10(L), (R^2=0.86); TS120kHz= -129.9+31.561ogf0(L), (R2=0.87); and TS200kHz=-117.6+24.661ogre(L), (R2=0.84). Empirical estimates of the relationship between the TS and body length of ice krill were established at 38, 120, and 200 kHz and compared with predictions obtained from both the linear regression model of Greene et al. (1991) and the Stochastic Distorted Wave Born Approximation (SDWBA) model. This result might be applied to improve acoustic detection and density estimation of ice krill in the Southern Ocean. Further comparative studies are needed with in situ target strength including various body lengths of ice krill.</description><identifier>ISSN: 0254-4059</identifier><identifier>ISSN: 2096-5508</identifier><identifier>EISSN: 1993-5005</identifier><identifier>EISSN: 2523-3521</identifier><identifier>DOI: 10.1007/s00343-015-4064-3</identifier><language>eng</language><publisher>Heidelberg: Science Press</publisher><subject>Approximation ; Aquatic life ; Body length ; Body measurements ; Body size ; Born approximation ; Comparative analysis ; Comparative studies ; Earth and Environmental Science ; Earth Sciences ; Echo sounding ; Echoes ; Ecosystems ; Euphausia ; Euphausia crystallorophias ; Euphausiacea ; Freshwater ; Ice ; Inland water environment ; Keystone species ; Krill ; Marine crustaceans ; Marine ecosystems ; Oceanography ; Physics ; Regression models ; Sonar detection ; Sound detecting and ranging ; Stochasticity ; Stocks ; Target strength ; Wet weight ; 优势 ; 冰 ; 南极磷虾 ; 扭曲波玻恩近似 ; 生态系统 ; 目标强度 ; 线性回归模型 ; 车身尺寸</subject><ispartof>Chinese journal of oceanology and limnology, 2015-05, Vol.33 (3), p.802-808</ispartof><rights>Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag Berlin Heidelberg 2015</rights><rights>Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag Berlin Heidelberg 2015.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c376t-8bf893c6e55feb5eb25b95f56428ad1bbde9ff2bfa9704f9d24ff5f566e6cbdf3</citedby><cites>FETCH-LOGICAL-c376t-8bf893c6e55feb5eb25b95f56428ad1bbde9ff2bfa9704f9d24ff5f566e6cbdf3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/84119X/84119X.jpg</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>La, Hyoung Sul</creatorcontrib><creatorcontrib>Lee, Hyungbeen</creatorcontrib><creatorcontrib>Kang, Donhyug</creatorcontrib><creatorcontrib>Lee, SangHoon</creatorcontrib><creatorcontrib>Shin, Hyoung Chul</creatorcontrib><title>Ex situ echo sounder target strengths of ice krill Euphausia crystallorophias</title><title>Chinese journal of oceanology and limnology</title><addtitle>Chin. J. Ocean. Limnol</addtitle><addtitle>Chinese Journal of Oceanology and Limnology</addtitle><description>Ice krill is the keystone species in the neritic ecosystem in the Southern Ocean, where it replaces the more oceanic Antarctic krill. It is essential to understand the variation of target strength (TS in dB re l m^2) with the different body size to accurately estimate ice krill stocks. However, there is comparatively little knowledge of the acoustic backscatter of ice krill. The TS of individual, formalin-preserved, tethered ice krill was measured in a freshwater test tank at 38, 120, and 200 kHz with a calibrated split-beam echo sounder system. Mean TS was obtained from 21 individual ice krill with a broad range of body lengths (L: 13-36 iron). The length (L, mm) to wet weight (W; mg) relationship for ice krill was 11/=0.001 21g~103~L35s (R2=0.96). The mean TS-to-length relationship were TS38kHz=-177.4+57log10(L), (R^2=0.86); TS120kHz= -129.9+31.561ogf0(L), (R2=0.87); and TS200kHz=-117.6+24.661ogre(L), (R2=0.84). Empirical estimates of the relationship between the TS and body length of ice krill were established at 38, 120, and 200 kHz and compared with predictions obtained from both the linear regression model of Greene et al. (1991) and the Stochastic Distorted Wave Born Approximation (SDWBA) model. This result might be applied to improve acoustic detection and density estimation of ice krill in the Southern Ocean. Further comparative studies are needed with in situ target strength including various body lengths of ice krill.</description><subject>Approximation</subject><subject>Aquatic life</subject><subject>Body length</subject><subject>Body measurements</subject><subject>Body size</subject><subject>Born approximation</subject><subject>Comparative analysis</subject><subject>Comparative studies</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Echo sounding</subject><subject>Echoes</subject><subject>Ecosystems</subject><subject>Euphausia</subject><subject>Euphausia crystallorophias</subject><subject>Euphausiacea</subject><subject>Freshwater</subject><subject>Ice</subject><subject>Inland water environment</subject><subject>Keystone species</subject><subject>Krill</subject><subject>Marine crustaceans</subject><subject>Marine ecosystems</subject><subject>Oceanography</subject><subject>Physics</subject><subject>Regression models</subject><subject>Sonar detection</subject><subject>Sound detecting and ranging</subject><subject>Stochasticity</subject><subject>Stocks</subject><subject>Target strength</subject><subject>Wet weight</subject><subject>优势</subject><subject>冰</subject><subject>南极磷虾</subject><subject>扭曲波玻恩近似</subject><subject>生态系统</subject><subject>目标强度</subject><subject>线性回归模型</subject><subject>车身尺寸</subject><issn>0254-4059</issn><issn>2096-5508</issn><issn>1993-5005</issn><issn>2523-3521</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kEtPwzAQhC0EEqXwA7hZcOESsONH4iOqykMq4gJny0nsJCWNW28i0X-PqyCEOHDaw3wzuzsIXVJySwnJ7oAQxllCqEg4kTxhR2hGlWKJIEQcoxlJBY-KUKfoDGAdacWJmqGX5SeGdhixLRuPwY99ZQMeTKjtgGEItq-HBrB3uC0t_ght1-HluG3MCK3BZdjDYLrOB79tWgPn6MSZDuzF95yj94fl2-IpWb0-Pi_uV0nJMjkkeeFyxUpphXC2ELZIRaGEE5KnualoUVRWOZcWzqiMcKeqlDt30KWVZVE5Nkc3U-42-N1oYdCbFkrbdaa3fgRNZU54_FySiF7_Qdd-DH28LlJZxkimchkpOlFl8ADBOr0N7caEvaZEHwrWU8E6FqwPBWsWPenkgcj2tQ2_kv8xXX0vanxf76LvZ5OUPMul4JR9AdOEilw</recordid><startdate>20150501</startdate><enddate>20150501</enddate><creator>La, Hyoung Sul</creator><creator>Lee, Hyungbeen</creator><creator>Kang, Donhyug</creator><creator>Lee, SangHoon</creator><creator>Shin, Hyoung Chul</creator><general>Science Press</general><general>Springer Nature B.V</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W94</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QH</scope><scope>7QL</scope><scope>7SN</scope><scope>7TN</scope><scope>7U7</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>M2P</scope><scope>M7N</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>8FD</scope><scope>FR3</scope><scope>H95</scope><scope>H99</scope><scope>L.F</scope><scope>P64</scope></search><sort><creationdate>20150501</creationdate><title>Ex situ echo sounder target strengths of ice krill Euphausia crystallorophias</title><author>La, Hyoung Sul ; Lee, Hyungbeen ; Kang, Donhyug ; Lee, SangHoon ; Shin, Hyoung Chul</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c376t-8bf893c6e55feb5eb25b95f56428ad1bbde9ff2bfa9704f9d24ff5f566e6cbdf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Approximation</topic><topic>Aquatic life</topic><topic>Body length</topic><topic>Body measurements</topic><topic>Body size</topic><topic>Born approximation</topic><topic>Comparative analysis</topic><topic>Comparative studies</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Echo sounding</topic><topic>Echoes</topic><topic>Ecosystems</topic><topic>Euphausia</topic><topic>Euphausia crystallorophias</topic><topic>Euphausiacea</topic><topic>Freshwater</topic><topic>Ice</topic><topic>Inland water environment</topic><topic>Keystone species</topic><topic>Krill</topic><topic>Marine crustaceans</topic><topic>Marine ecosystems</topic><topic>Oceanography</topic><topic>Physics</topic><topic>Regression models</topic><topic>Sonar detection</topic><topic>Sound detecting and ranging</topic><topic>Stochasticity</topic><topic>Stocks</topic><topic>Target strength</topic><topic>Wet weight</topic><topic>优势</topic><topic>冰</topic><topic>南极磷虾</topic><topic>扭曲波玻恩近似</topic><topic>生态系统</topic><topic>目标强度</topic><topic>线性回归模型</topic><topic>车身尺寸</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>La, Hyoung Sul</creatorcontrib><creatorcontrib>Lee, Hyungbeen</creatorcontrib><creatorcontrib>Kang, Donhyug</creatorcontrib><creatorcontrib>Lee, SangHoon</creatorcontrib><creatorcontrib>Shin, Hyoung Chul</creatorcontrib><collection>维普_期刊</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>维普中文期刊数据库</collection><collection>中文科技期刊数据库-自然科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Aqualine</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Science Journals</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>ASFA: Marine Biotechnology Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Marine Biotechnology Abstracts</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Chinese journal of oceanology and limnology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>La, Hyoung Sul</au><au>Lee, Hyungbeen</au><au>Kang, Donhyug</au><au>Lee, SangHoon</au><au>Shin, Hyoung Chul</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ex situ echo sounder target strengths of ice krill Euphausia crystallorophias</atitle><jtitle>Chinese journal of oceanology and limnology</jtitle><stitle>Chin. J. Ocean. Limnol</stitle><addtitle>Chinese Journal of Oceanology and Limnology</addtitle><date>2015-05-01</date><risdate>2015</risdate><volume>33</volume><issue>3</issue><spage>802</spage><epage>808</epage><pages>802-808</pages><issn>0254-4059</issn><issn>2096-5508</issn><eissn>1993-5005</eissn><eissn>2523-3521</eissn><abstract>Ice krill is the keystone species in the neritic ecosystem in the Southern Ocean, where it replaces the more oceanic Antarctic krill. It is essential to understand the variation of target strength (TS in dB re l m^2) with the different body size to accurately estimate ice krill stocks. However, there is comparatively little knowledge of the acoustic backscatter of ice krill. The TS of individual, formalin-preserved, tethered ice krill was measured in a freshwater test tank at 38, 120, and 200 kHz with a calibrated split-beam echo sounder system. Mean TS was obtained from 21 individual ice krill with a broad range of body lengths (L: 13-36 iron). The length (L, mm) to wet weight (W; mg) relationship for ice krill was 11/=0.001 21g~103~L35s (R2=0.96). The mean TS-to-length relationship were TS38kHz=-177.4+57log10(L), (R^2=0.86); TS120kHz= -129.9+31.561ogf0(L), (R2=0.87); and TS200kHz=-117.6+24.661ogre(L), (R2=0.84). Empirical estimates of the relationship between the TS and body length of ice krill were established at 38, 120, and 200 kHz and compared with predictions obtained from both the linear regression model of Greene et al. (1991) and the Stochastic Distorted Wave Born Approximation (SDWBA) model. This result might be applied to improve acoustic detection and density estimation of ice krill in the Southern Ocean. Further comparative studies are needed with in situ target strength including various body lengths of ice krill.</abstract><cop>Heidelberg</cop><pub>Science Press</pub><doi>10.1007/s00343-015-4064-3</doi><tpages>7</tpages></addata></record> |
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subjects | Approximation Aquatic life Body length Body measurements Body size Born approximation Comparative analysis Comparative studies Earth and Environmental Science Earth Sciences Echo sounding Echoes Ecosystems Euphausia Euphausia crystallorophias Euphausiacea Freshwater Ice Inland water environment Keystone species Krill Marine crustaceans Marine ecosystems Oceanography Physics Regression models Sonar detection Sound detecting and ranging Stochasticity Stocks Target strength Wet weight 优势 冰 南极磷虾 扭曲波玻恩近似 生态系统 目标强度 线性回归模型 车身尺寸 |
title | Ex situ echo sounder target strengths of ice krill Euphausia crystallorophias |
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