Résultats de la recherche

1. A feasibility study for stock assessment of D. mawsoni in the Ross Sea (Subares 88.1 and 88.2) using a tag and recapture experiment

   purpose of stock assessment of the Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea. An ... exploratory fishery for D. mawsoni has been operating since 1997-98. Catches have increased from ~40 t in 1997 ... -98 to nearly 1800 t in 2002-03. Although some Patagonian toothfish (D. eleginoides) are taken in the ... 90% D. mawsoni) have been tagged and released in the area, from vessels operating in the exploratory ...

   Meeting Document : WG-FSA-SAM 03/10 : Auteur(s): K.J. Sullivan, N.W.McL. Smith, J. McKenzie and S.M. Hanchet (New Zealand)

2. Modelling the dynamics of krill populations in the Antarctic Peninsula region

   estimates of recruitment to the population can be used to model in detail interannual variation in the ... dynamics of krill are used to assess to what extent they can explain the observed changes in the density of ... the population in the Antarctic Peninsula region. Two approaches have been explored: the first uses ... (?43% per annum). In both cases however the mortality rate estimate is poorly constrained in a range ...

   Meeting Document : WG-EMM-99/56 : Auteur(s): E.J. Murphy (United Kingdom), A. Constable (Australia) and D. Agnew (United Kingdom)

3. Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3

   Abstract:  Trends in mean length and maturity stage of toothfish were examined using observer data ... from the 1998, 1997 and 1996 toothfish seasons. Toothfish are distributed down the shelf slope in ... statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... seasons, suggesting movement of animals both up and down slope at particular times of year. Months with a ...

   Meeting Document : WG-FSA-98/58 : Auteur(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)

4. DOWN-SCALING FOOSA TO MODEL THE ADMIRALTY BAY PYGOSCELID PENGUIN COLONIES: A WORK IN PROGRESS

   , krill, and environmental variability at the long-term research site in Admiralty Bay, King George Island ... . This work-in-progress serves 2 purposes: 1) to use historical data to estimate parameters in a model ... -fitting framework for the purpose of model validation, and 2) to add and explore functionality in Foosa to ... that Foosa capably captures the general trends in adult abundance at Admiralty Bay with minimal formal ...

   Meeting Document : WG-EMM-08/51 : Auteur(s): J.T. Hinke, G.M. Watters and W.Z. Trivelpiece (USA)

5. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

   ). The krill yield model uses a biased estimate of SB0 with a method for correcting this bias in the ... of SB0 in the krill yield model compared to the unbiased estimate in the generalised yield model. The ... results show that the biased estimate of SB0 results in a biased estimate of the probability of critical ... bias in the krill yield model will result in the catch level, γ, given for a set probability of ...

   Meeting Document : WG-EMM-97/45 : Auteur(s): de la Mare, W.K., Constable, A.J.

6. Existing initiatives that provide an extensive framework for research and monitoring in East Antarctica

   Abstract:  Research and monitoring (RM) plans need to be developed for marine protected areas in ... projects and management expertise.  In 2012, the Working Group on Ecosystem Monitoring and Management ... the Scientific Committee and Commission in the detailed structure of the plans.  SC-CAMLR endorsed ... and monitoring should be achievable in practice. The proposal for the East Antarctica Representative ...

   Meeting Document : SC-CAMLR-IM-I/BG/01 : Auteur(s): Delegations of Australia, France and the European Union

7. Characterising catch and effort from data-poor toothfish fisheries in CCAMLR Divisions 58.4.3 – 58.4.4

   effort in Divisions 58.4.4a, 58.4.4b, 58.4.3a and 58.4.3b is presented. Information analysed corresponds ... to fishing logbooks recorded in the exploratory fisheries carried out between July 2000 and March ... 2012. During this period, a total of 9 countries registered fishing operations in which 1811 sets were ... Bank) accumulated the highest proportion of allocated effort in which a total of 948 sets (52\%) were ...

   Meeting Document : WG-SAM-13/41 : Auteur(s): J.C. Quiroz, R. Wiff (Chile) and P. Martinez (Argentina)

8. A method to evaluate selection of Antarctic krill in towed fishing gears

   Abstract:  The pelagic trawlers involved in the fishery for Antarctic krill (Euphausia superba ... traditionally collected during timely and costly fishing experiments in the field where one design is tested at ... the morphology of the species in quest and the shapes of the relevant mesh types, to predict the size ... selectivity by mathematical modeling. After making modifications with the procedures in FISHSELECT to ...

   Meeting Document : WG-EMM-13/34 : Auteur(s): L.A. Krag, B. Herrmann (Denmark), S. Iversen, A. Engås, S. Nordrum and B.A. Krafft (Norway)

9. Comparison of catches for toothfish in 58.4.1, 58.4.2, and 48.6 from vessels with anomalous CPUE

   stocks, and uncertainty or bias in the amount of catch from an area must be taken into account in the ... assessment of a stock. In 2013, Korea held a workshop on the anomalous CPUE data reported from some Korean ... vessels in data-poor exploratory fisheries (Delegation of Korea 2013). That paper requested that the data ... use these data regarded as anomalous, along with that from other vessels fishing in the same area and ...

   Meeting Document : WG-FSA-13/57 Rev. 1 : Auteur(s): A. Dunn, B.R. Sharp (New Zealand), C. Darby (United Kingdom) and O.R. Godø (Norway)

10. Report on exploratory fishing by Australia in Division 58.4.1 during the 2015/16 fishing season

    be determined for Divisions 58.4.1 and 58.4.2, and precautionary management arrangements are in place ... as set out in Conservation Measures 41-11 and 41-05. A research plan (WG-FSA-15/47 Rev. 1) was ... in exploratory fishing within these Divisions. This paper reports on the fishing operation, catch ... composition, tagging and biological sampling undertaken by Australia in SSRUs 58.4.1E and 58.4.1G. A total of ...

    Meeting Document : WG-SAM-16/35 : Auteur(s): P. Yates, D. Welsford, P. Ziegler, D. Maschette and T. Lamb

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