There is no description / abstract available for this document.
Abstract:
This paper contains the revised version of the proposed draft Conservation Measure establishing a Marine Protected Area in Domain 1 (Western Antarctic Peninsula and South Scotia Arc) as presented in last year’s paper CC-CCAMLR-38/25 Rev 1.
The revised version of the D1MPA proposal addresses outstanding issues as raised by Members during the SC-CCAMLR 37 in 2018. The rationale underlying the modifications in the D1MPA Model, aimed to achieve conservation objectives agreed during the two CCAMLR International Workshops (2012 and 2015) while also seeking to adequately consider the krill fishery distribution. A background paper with the rationale supporting the changes has also been presented (CCAMLR-39/BG/02). Since the initial presentation of the proposal in 2018, both Argentina and Chile have been openly available to engage with interested Members so as to address any outstanding concerns. Both Members are nonetheless of the view that the proposal's solid scientific foundations are sufficient to present the proposal for the Commission's consideration in 2020.
There is no abstract available for this document.
There is no abstract available for this document.
Abstract:
The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during April 2020. Based on data from this survey, this paper provides an assessment of mackerel icefish (Champsocephalus gunnari) population structure, abundance and yield in Division 58.5.2 to the west of 79o 20’ E using standard CCAMLR methods (CMIX and Generalized Yield Model). Additionally, recent work has been undertaken as part of the krill management strategy re-implementing the Generalized Yield Model software in R, and the two implementations resulted in highly consistent assessment results.
The 2020 survey showed a large 2+ cohort in the population and a high biomass. Based on the Grym implementation, catches of 1276 t in the 2020/21 season and 1047 t in the 2021/22 season satisfy the CCAMLR decision rules.
Abstract:
The General Capacity Building Fund (GCBF) was created as a result of decisions made at CCAMLR-38 (SCAF-2019 report, paragraph 22). The Secretariat is required to report to the Commission on the activities of the Fund during 2020.
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There is no abstract available for this document.
Abstract:
The biomass of Antarctic toothfish (Dissostichus mawsoni) in CCAMLR Subarea 48.4 is estimated from tagging returns, giving an average of 1,456 tonnes since 2016. Applying the CCAMLR agreed precautionary assumption of average biomass, using the 5-year average biomass, and harvest rate of γ = 0.038, implies a 2020/21 yield of 55 tonnes.
Historically, a precautionary approach has been applied in treating 48.4 Antarctic toothfish as a separate stock. Based on the biological characteristics of the catches in Subarea 48.4, and the surrounding regions, the Antarctic toothfish around the southern South Sandwich Islands are now hypothesised as being part of a much larger stock that extends south into Subareas 48.2, 48.6 and possibly 48.5. The current method of assessment, based on tag returns, consequently, is considered to provide an estimate of the local biomass.
Abstract:
The CCAMLR Scientific Committee and its Working Groups are tasked with providing precautionary management advice in accordance with CCAMLR Article II and using the CCAMLR Decision Rule as a foundation. WG-EMM(2019) began setting out a process for defining a “data rich” analysis approach progressing towards assessment and management of the krill stock and its fishery. At WG-EMM(2020) discussions highlighted that for Subarea 48.1, where catches have increased to the local interim catch allocation and where there has been development of a risk assessment model, a data limited approach could be used to provide advice to the Scientific Committee and the Commission in the short term, while the data rich approach is being fully developed and evaluated. This discussion paper outlines a draft data limited approach for providing advice on krill management in Subarea 48.1, to initiate further discussion on the methodology.