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    WG-ASAM-2021

    Full Name
    Working Group on Acoustic Survey and Analysis Methods
    Location:
    Online
    Meeting Start Date/Time:
    Meeting End Date/Time:
    Submissions Due
    Monday, 17 May 2021 - 00:00 Australia/Hobart (Working Group Paper)
    Meeting Report:
    e-sc-40-a4.pdf (325.69 KB)

      Documents

      Document Number Title Agenda Item(s)
      WG-ASAM-2021/01
      More Info
      Repository of acoustic data collected by fishing vessels
      CCAMLR Secretariat
      4
      WG-ASAM-2021/02
      More Info
      Biases in acoustic biomass density estimates used for calculating catch limits
      C.S. Reiss, J. Hinke, A.M. Cossio, G.R. Cutter and G.M. Watters
      3
      WG-ASAM-2021/03
      More Info
      Comparison analysis of krill length compositions from catches obtained by research and commercial midwater trawls
      S. Sergeev and S. Kasatkina
      3
      WG-ASAM-2021/04 Rev. 1
      More Info
      Results of acoustic survey in Subarea 48.1 and 48.2 carried out by Russian RV «Atlántida» in 2020
      S. Kasatkina, A. Abramov, M. Sokolov, A. Sytov and D. Kozlov
      2.1
      WG-ASAM-2021/05 Rev. 1
      More Info
      Analysis of acoustic data to examine spatial and temporal variability of krill distribution from repeated transects
      S. Kasatkina, A. Abramov, M. Sokolov and A. Malyshko
      4
      WG-ASAM-2021/06
      More Info
      A revised biomass estimation of Antarctic krill based on the up-to-date swarm based method for CCAMLR Division 58.4.1 in 2018/19 using data obtained by Japanese survey vessel, Kaiyo-maru
      K. Abe, R. Matsukura, N. Yamamoto, K. Amakasu and H. Murase
      2.2
      WG-ASAM-2021/07
      More Info
      Echogram noise removal can remove significant amounts of krill backscatter
      G. Macaulay, G. Skaret and B. Krafft
      3
      WG-ASAM-2021/08
      More Info
      Using unmanned surface vehicles to monitor krill density during fishing and obtain regular updates of pre-exploitation biomass
      S. Menze, A. Lowther and B.A. Krafft
      4
      WG-ASAM-2021/09
      More Info
      The various spatial scales available for consideration and the distribution of the krill fishery in Subarea 48.1
      Y. Ying, X. Zhao, G. Fan and X. Wang
      2.1
      WG-ASAM-2021/10
      More Info
      Potential effect of the chosen length-frequency distribution on acoustic biomass estimates of Antarctic krill
      X. Wang, X. Zhao and Q. Xu
      3
      WG-ASAM-2021/11
      More Info
      Monthly variation of Antarctic krill biomass in a main fishing ground in the Bransfield strait based on fishing vessel acoustic data collected during routine fishing operations
      Y. Zhao, X. Wang, X. Zhao, Y. Ying and J. Zhang
      4
      WG-ASAM-2021/12
      More Info
      Biomass of Antarctic krill (Euphausia superba) in the eastern sector of the CCAMLR Division 58.4.2
      M.J. Cox, G. Macaulay, N. Kelly, R. King, D. Maschette, J. Melvin, A. Smith, S. Wotherspoon and S. Kawaguchi
      2.2
      WG-ASAM-2021/13
      More Info
      Biomass estimates of Antarctic krill around the South Shetland Islands based on surveys conducted by a Chinese fishing vessel from 2013 to 2019
      X. Wang, X. Yu, X. Zhao, J. Zhang, G. Fan, Y. Ying and J. Zhu
      2.1
      WG-ASAM-2021/14
      More Info
      Developing plausible estimates of subarea and fished area biomasses
      B.A. Krafft, G. Macaulay, S. Fielding and P.N. Trathan
      2.1
      WG-ASAM-2021/15
      More Info
      Acoustic transects undertaken by fishing vessels at South Georgia
      S. Fielding, J. Arata and P.N. Trathan
      4
      WG-ASAM-2021/P01
      More Info
      Glider-Based Estimates of Meso-Zooplankton Biomass Density: A Fisheries Case Study on Antarctic Krill (Euphausia superba) Around the Northern Antarctic Peninsula
      C.S. Reiss, A.M. Cossio, J. Walsh, G.R. Cutter and G.M. Watters
      2.1

      Agenda

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      1     Opening of the meeting
      2     Krill biomass survey estimates
      2.1.1     Subarea biomass estimates from 2019 and any other relevant survey data

      The Working Group will determine the subarea biomass from the 2019 large-scale survey and any other relevant scale survey.

      2.1.2     Local-scale biomass estimates within subareas relevant to the area of operation of the krill fishery

      The Working Group will review the local-scale strata biomass estimates from relevant surveys.

      2.2.1     Area 58 subarea estimates of krill biomass

      The Working Group will review survey results for biomass estimates from the East Antarctic surveys conducted by Japan (Division 58.4.1) and Australia (Division 58.4.2).

      3     Survey design for future routine biomass estimates

      The Working Group will consider survey designs: spatial and temporal scale, acoustic and trawl data collection and processing, which would be required to deliver regular updates on krill biomass for management at subarea and local scales.

      4     Acoustic observations of krill to inform spatial and temporal dynamics of krill

      The Working Group will consider collection and analysis methods for acoustic data to examine temporal variability of krill distribution (e.g. moorings, repeated transects), spatial distribution during fishing activities (e.g. acoustic data collected during routine fishing activities).

      5     Advice to the Scientific Committee
      6     Adoption of the report and close of the meeting

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