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1. 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 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)

2. 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 ... 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 ... for addressing these issues if these groups consider that large-scale surveys are likely to be ...

   Meeting Document : WG-EMM-15/27 : Auteur(s): 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)

3. 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 : Auteur(s): D. Maschette, G. Nowara and D. Welsford

4. 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 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)

5. 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 : Auteur(s): L. Robinson, P. Burch and K. Reid

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

   (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 ... generated using an exponential model compared with a linear model for short term monitoring programs of up ... Abstract:  There are unresolved issues surrounding the use of power analyses for examining the ...

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

7. Marine Ecosystem Assessment for the Southern Ocean (MEASO)

   held in Hobart in early April 2018 (http://www.measo2018.aq/). The conference provided an opportunity ... researchers.  For this survey, an indication of where and when national research programmes have conducted ... Abstract:  A first Marine Ecosystem Assessment for the Southern Ocean (MEASO) is under development ... happening now and into the future, and what may need to be planned for, in terms of research and management ...

   Meeting Document : SC-CAMLR-XXXVII/BG/22 : Auteur(s): A. Constable, J. Melbourne-Thomas, R. Trebilco and M. Brasier

8. DEVELOPMENT OF RECOVERY PLANS FOR DEPLETED TOOTHFISH STOCKS IN THE INDIAN OCEAN SECTOR OF THE SOUTHERN OCEAN

   and commercial fishing and it is likely that they are depleted below the threshold for CCAMLR ... fisheries. An updated assessment of that status the stock at BANZARE Bank using data from the recent seasons ... along with the estimated time series of historical catches are used to provide estimates of B0 for this ... Division. For a range of scenarios, the Generalised Yield Model is then used to assess foregone yields and ...

   Meeting Document : WG-FSA-09/44 : Auteur(s): D.C. Welsford, A.J. Constable and J.P. McKinlay (Australia)

9. Preliminary evaluation of two feedback management strategies for the krill fishery in Subareas 48.1–48.3

   of the Convention. Management strategies for the krill fishery are currently comprised of an overall ... for the krill fishery will compromise the Commission’s ability to achieve the objectives in Article II ... evaluation of two feedback management strategies for the krill fishery in Subareas 48.1–48.3 Microsoft Word ... Release Consent:  No Delegation responsibility for releasing documents:  United States of America ...

   Meeting Document : SC-CAMLR-XXXVII/BG/12 : Auteur(s): Delegation of the USA

10. A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators

    fishery. 3. The biomass of krill appropriate for the predators (and the fishery) fluctuates from one year ... to the next according to an age-structured, stochastic recruitment model. We use the model to ... Abstract:  1. Although the development of fisheries for krill in the southern oceans has prompted ... population level effects. Here, we present for. the first time a model at the level of the foraging trip for ...

    Meeting Document : WG-EMM-96/20 : Auteur(s): Switzer, P.V., Mangel, M.

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