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1. A method for estimating recruitment and mortality from time series of length-density data

   method for jointly estimating natural mortality and cohort strength at age 4 using a negative log ... years. A worked example is provided in an appendix. Author(s):  A. Constable and I. Ball (Australia ... Abstract:  Estimates of natural mortality are currently unavailable for Patagonian toothfish. Such ... estimates are needed for estimating recruitments and for use in assessing yield. This paper proposes a ...

   Meeting Document : WG-FSA-00/52 : Autor(es): A. Constable and I. Ball (Australia)

2. Mackerel icefish Champsocephalus gunnari in the diet of upper trophic level predators at South Georgia: implications for fisheries management

   Abstract:  Mackerel Icefish Champsocephalus gunnari Lönnberg is an important component of the ... ecosystem at South Georgia where its diet is dominated by Antarctic Krill Euphausia superba, it is an ... important prey species for a number of upper trophic level predators, and is the target of commercial ... . gunnari population. C. gunnari occurred in 20 – 40 % of scats from Antarctic fur seals and comprised 48 ...

   Meeting Document : WG-FSA-03/74 : Autor(es): K. Reid, S. Hill and T. Diniz (United Kingdom)

3. BIOLOGICAL PROSPECTING IN THE SOUTHERN OCEAN, A ROLE FOR CCAMLR

   some CCAMLR provisions, in particular the Convention’s reporting requirements outlined in Article 20 ... . Last June, ATCM XXXI discussed the report from an Intersessional Contact Group (ICG) that was ... and monitoring requirement pursuant to Article 2. Author(s):  Submitted by IUCN Title:  BIOLOGICAL ... PROSPECTING IN THE SOUTHERN OCEAN, A ROLE FOR CCAMLR Approval:  Approved ...

   Meeting Document : CCAMLR-XXVII/BG/36 : Autor(es): Submitted by IUCN

4. Scientific justification for a marine protected area designation around the Balleny Islands to protect ecosystem structure and function in the Ross Sea region, Antarctica: progress report

   Abstract:  In 2000, the New Zealand delegation to CCAMLR proposed the designation of an Antarctic ... Article 3 of Annex V to the Protocol on Environmental Protection to the Antarctic Treaty. This paper’s ... focus is on the CCAMLR values. A review of existing information reveals that the Balleny Islands are ... uniquely situated to provide essential breeding and foraging habitat for large populations of top predator ...

   Meeting Document : SC-CAMLR-XXIV/BG/25 : Autor(es): Delegation of New Zealand

5. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season

   Abstract:  We provide an update of the Bayesian sex and age structured population stock assessment ... ), using revised catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference ... lower recapture rate by non-New Zealand vessels, particularly in the early years. The reason for this is ... data for all vessels in all years were used, then the estimated initial biomass was higher (B0=110 130 ...

   Meeting Document : WG-FSA-07/37 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)

6. Key considerations for planning a large-scale krill survey

   useful basis for designing future surveys, subject to a review which should be the first task in ... Abstract:  Article II of the Convention requires the Commission to maintain harvested populations ... management (FBM) approaches for the krill stock in subareas 48.1 to 48.4. These approaches include some which ... ) might also play a role in the future management of the krill fishery. Such surveys provide an indication ...

   Meeting Document : WG-EMM-15/27 : Autor(es): S. Hill, J. Watkins (United Kingdom), O.R. Godø (Norway), S. Kawaguchi (Australia), D. Kinzey, C. Reiss (USA), V. Siegel (Germany), P. Trathan (United Kingdom) and G. Watters (USA)

7. A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey

   in the 2019/20 season and 406 t in the 2020/21 season, respectively, satisfied the CCAMLR decision ... provides a preliminary assessment for mackerel icefish (Champsocephalus gunnari) population structure ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... rules. Author(s):  D. Maschette, G. Nowara and D. Welsford Title:  A preliminary assessment for mackerel ...

   Meeting Document : WG-FSA-2019/02 : Autor(es): D. Maschette, G. Nowara and D. Welsford

8. Revised input parameters and implications for the Antarctic toothfish (Dissostichus mawsoni) stock assessment in Subareas 88.1 and 88.2

   Antarctic toothfish stock assessment for the Ross Sea fishery. In particular we review catch history, length ... were updated, as are some modelling parameters, and methods for calculating age- and length-frequencies ... -weight relationships, catch-at-length and catch-at age. In addition, we report some preliminary model ... consistent patterns in length frequencies over the duration of the fishery. Including terms for nation ...

   Meeting Document : WG-SAM-07/6 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)

9. Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries

   achieving the same level of accuracy to 80%, a minimum of 20 tagged fish recaptures were required when ... Abstract:  This study used an operating model to simulate a Dissostichus eleginoides population in ... will have a high risk of over-estimating biomass and that for a given number of tagged fish available a ... minimum numbers of recaptures are required to ensure a low likelihood of biomass overestimation. For ...

   Meeting Document : WG-SAM-17/13 : Autor(es): L. Robinson, P. Burch and K. Reid

10. The effect of temporal variability on power analysis predictions for Adélie penguin CEMP parameters at Béchervaise Island

    generated using an exponential model compared with a linear model for short term monitoring programs of up ... (5.2 – 6.7%). For example, with a 10 year monitoring program it is possible to detect fixed increases ... or decreases larger than 2% each year with more than 80% power. Increasing the duration of the ... Abstract:  There are unresolved issues surrounding the use of power analyses for examining the ...

    Meeting Document : WG-EMM-03/49 : Autor(es): L.M. Emmerson and C. Southwell (Australia)

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