CCAMLR

WG-SAM-2021

Nom:

Groupe de travail sur les statistiques, les évaluations et la modélisation

Meeting documents

Doc Number	Titre
WG-SAM-2021/01	New research plan for Dissostichus spp. under CM 24-01, paragraph 3 in Subarea 88.3 by Korea and Ukraine from 2021/22 to 2023/24 Delegations of the Republic of Korea and Ukraine
WG-SAM-2021/02	Notification for the Ross Sea shelf survey in 2022 Delegation of New Zealand
WG-SAM-2021/03	Continuing research in the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22; Research plan under CM 21-02, paragraph 6(iii) Delegations of Australia, France, Japan, Republic of Korea and Spain
WG-SAM-2021/04 Rev. 2	Proposal for continuing research on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2021/22 from a multiyear plan (2021–2024): Research Plan under CM 21-02, paragraph 6(iii) Delegations of Japan, South Africa and Spain
WG-SAM-2021/05	Proposal to conduct a local survey of Champsocephalus gunnari in Statistical Subarea 48.2 Delegation of Ukraine
WG-SAM-2021/06	Provisional Trend Analysis – Preliminary 2021 research blocks biomass estimates CCAMLR Secretariat
WG-SAM-2021/07	Antarctic krill proportional recruitment indices (2010–2020) in Subareas 48.1–48.3 from the observer data CCAMLR Secretariat
WG-SAM-2021/08	Preliminary exploration of H-based decision rules for managing toothfish fisheries R. Hillary, P. Ziegler and J. Day
WG-SAM-2021/09	Recruitment modelling for Euphausia superba stock assessments considering the recurrence of years with low recruitment C. Pavez, S. Wotherspoon, D. Maschette, K. Reid and K. Swadling
WG-SAM-2021/10	Multi-fleet stock assessment modelling with the Grym J. Liu, S. Wotherspoon and D. Maschette
WG-SAM-2021/11	Analysis of the factors influencing the fishing impact zone for the longline toothfish fishery O. Krasnoborodko, S. Kasatkina and A. Remeslo
WG-SAM-2021/12	Grym parameter values for Subareas 48.1, 48.2 and 48.3 S. Thanassekos, K. Reid, S. Kawaguchi, S. Wotherspoon, D. Maschette, P. Ziegler, D. Welsford, G. Watters, D. Kinzey, C. Reiss, C. Darby, P. Trathan, S. Hill, T. Earl, S. Kasatkina and Y.-P. Ying
WG-SAM-2021/13	Updated stock assessment model for the Antarctic toothfish (Dissostichus mawsoni) population of the Ross Sea region for 2021 A. Grüss, A. Dunn and S. Parker
WG-SAM-2021/14	Diagnostic plots for the 2021 assessment model for the Antarctic toothfish (Dissostichus mawsoni) population of the Ross Sea region A. Grüss, A. Dunn and S. Parker
WG-SAM-2021/15	Stock Annex for the 2021 assessment of the Antarctic toothfish (Dissostichus mawsoni) population of the Ross Sea region A. Grüss, A. Dunn and S. Parker
WG-SAM-2021/16	Options to include the Ukrainian quarantined data to the CCAMLR database I. Slypko and K. Demianenko
WG-SAM-2021/17	Report on the toothfish survey in the Subarea 48.1 by the Ukrainian vessel Calipso in 2021 Delegation of Ukraine
WG-SAM-2021/18	Research Plan under CM 21-02, paragraph 6 (iii). Proposal for new multi-Member research on Dissostichus spp. in Divisions 58.4.1 and 58.4.2 from 2021/22 to 2023/24 Delegation of the Russian Federation
WG-SAM-2021/19	Proportional recruitment and weight-length relationship for krill in Subarea 48.1 and 48.2 from RV Atlantida survey, 2020 S. Kasatkina and S. Sergeev
WG-SAM-2021/20 Rev. 1	Summary of proportional recruitment and multiyear biomass variability for krill in Subarea 48 from research surveys D. Kinzey
WG-SAM-2021/21	2021 updated analysis of the sea ice concentration (SIC) in research blocks 4 (RB4), and 5 (RB5) of Subarea 48.6 with sea surface temperature (SST) and winds T. Namba, R. Sarralde, T. Ichii, T. Okuda, S. Somhlaba and J. Pompert
WG-SAM-2021/22	Moving from biomass estimates towards precautionary catch limit: spatial scale revisited Y. Ying, X. Wang, X. Zhao, Y. Zhao, G. Fan and J. Zhu

WG-ASAM-2021

Nom:

Groupe de travail sur les méthodes d'évaluation acoustique et d'analyse

Meeting documents

Doc Number	Titre
WG-ASAM-2021/01	Repository of acoustic data collected by fishing vessels CCAMLR Secretariat
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-2021/04 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-2021/05 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-2021/06	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-2021/07	Echogram noise removal can remove significant amounts of krill backscatter G. Macaulay, G. Skaret and B. Krafft
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-2021/09	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-2021/10	Potential effect of the chosen length-frequency distribution on acoustic biomass estimates of Antarctic krill X. Wang, X. Zhao and Q. Xu
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-2021/12	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
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-2021/15	Acoustic transects undertaken by fishing vessels at South Georgia S. Fielding, J. Arata 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