Full Name
Groupe de travail sur les méthodes d'évaluation acoustique et d'analyse
Lieu:
En ligne
Date/heure de début de réunion:
Date/heure de fin de réunion:
Dates limites de soumission
lundi 17 mai 2021 à 00:00 Australie/Hobart (Document de groupe de travail)
Rapport de la réunion:
f-sc-40-a4.pdf
(320.9 Ko)
Documents de réunion
Ordre du jour
Ordre du jour
Développer Commentaires | Développer Document | Réduire
1 Opening of the meeting
Documents
2 Krill biomass survey estimates
Documents
2.1 Area 48
Documents
| WG-ASAM-2021/04 Rev. 1 | 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 |
| WG-ASAM-2021/09 | 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 |
| WG-ASAM-2021/13 | 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 |
| WG-ASAM-2021/14 | Developing plausible estimates of subarea and fished area biomasses B.A. Krafft, G. Macaulay, S. Fielding and P.N. Trathan |
| WG-ASAM-2021/P01 | 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 |
2.1.1 Subarea biomass estimates from 2019 and any other relevant survey data
Commentaires
The Working Group will determine the subarea biomass from the 2019 large-scale survey and any other relevant scale survey.
Documents
2.1.2 Local-scale biomass estimates within subareas relevant to the area of operation of the krill fishery
Commentaires
The Working Group will review the local-scale strata biomass estimates from relevant surveys.
Documents
2.2 Area 58
Documents
| WG-ASAM-2021/06 | 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 |
| WG-ASAM-2021/12 | 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 |
2.2.1 Area 58 subarea estimates of krill biomass
Commentaires
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).
Documents
3 Survey design for future routine biomass estimates
Commentaires
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.
Documents
| WG-ASAM-2021/02 | 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 |
| WG-ASAM-2021/03 | Comparison analysis of krill length compositions from catches obtained by research and commercial midwater trawls S. Sergeev and S. Kasatkina |
| WG-ASAM-2021/07 | Echogram noise removal can remove significant amounts of krill backscatter G. Macaulay, G. Skaret and B. Krafft |
| WG-ASAM-2021/10 | Potential effect of the chosen length-frequency distribution on acoustic biomass estimates of Antarctic krill X. Wang, X. Zhao and Q. Xu |
4 Acoustic observations of krill to inform spatial and temporal dynamics of krill
Commentaires
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).
Documents
| WG-ASAM-2021/01 | Repository of acoustic data collected by fishing vessels CCAMLR Secretariat |
| WG-ASAM-2021/05 Rev. 1 | 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 |
| WG-ASAM-2021/08 | 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 |
| WG-ASAM-2021/11 | 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 |
| WG-ASAM-2021/15 | Acoustic transects undertaken by fishing vessels at South Georgia S. Fielding, J. Arata and P.N. Trathan |
5 Advice to the Scientific Committee
Documents
6 Adoption of the report and close of the meeting