Résultats de la recherche

1. Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 to 48.4 using available data

   yield estimate for the krill fishery (which is 9.3%). Biomass indices from local scale acoustic surveys ... catch limit which is currently appropriate for achieving the conservation criteria for the krill stock ... prerequisite for such advances. The most effective means to achieve this is likely to be through increased use ... . Watkins (United Kingdom) Title:  Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 ...

   Meeting Document : WG-EMM-15/28 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding (United Kingsom), B. Krafft, O.R. Godø, G. Skaret (Norway), P. Trathan, J. Watkins (United Kingdom)

2. THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA

   tagging data quality for use in an assessment. Author(s):  D.A.J. Middleton (New Zealand) Title:  THE ... Abstract:  A dataset for the 2009 assessment of Antarctic toothfish (Dissostichus mawsoni) in the ... Ross Sea Region was selected on the basis of data quality metrics for individual trips. Initial ... trips were used to define a range for various data quality metrics considered to be informative with ...

   Meeting Document : WG-FSA-09/35 : Auteur(s): D.A.J. Middleton (New Zealand)

3. CONDITIONING SMOM USING THE AGREED CALENDAR OF OBSERVED CHANGES IN PREDATOR AND KRILL ABUNDANCE: A FURTHER STEP IN THE DEVELOPMENT OF A MANAGEMENT PROCEDURE FOR KRILL FISHERIES IN AREA 48

   agreeing the relative plausibilities (weights) for the different operating models. An outline of suggested ... -predator-fishery dynamics described in an accompanying paper is conditioned using the WG-SAM set of ... reference observations for Area 48 (the SAM calendar). Results are presented for two implementations of SMOM ... , one with the time series of krill abundance fixed on input, and the other incorporating an explicit ...

   Meeting Document : WG-EMM-08/44 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)

4. A method for inferring movement rates of fish from mark–recapture data

   required for the probability of recapture in a location to match the relative probability of catching an ... release and recapture point. An alternative approach presented here is to build an underlying model of ... estimating movement distances and rates is to estimate mixing times for mark recapture studies, there are ... simpler approaches that might be useful. For instance, one alternative would be to ask how much time is ...

   Meeting Document : WG-FSA-05/66 : Auteur(s): C. Wilcox (Australia)

5. Integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)

   Abstract:  This paper presents an updated assessment for Patagonian toothfish (Dissostichus ... of a range of alternative fishery structures and model assumptions for year class strength (YCS) on ... information on YCS variation resulted in an SSB status of 0.58 in 2013, but was considered to be less ... realistic. The impact of altering the sub-fishery structure for trawl on model estimates was relatively ...

   Meeting Document : WG-FSA-13/24 : Auteur(s): P. Ziegler, S. Candy and D. Welsford (Australia)

6. Progress report on the Australian Fisheries Research and Development Corporation project to develop robust assessment methods and harvest strategies for spatially complex, multi-jurisdictional toothfish fisheries in the Southern Ocean

   Abstract:  This paper provides an update on the ongoing FRDC-funded research project to develop ... robust assessment methods and harvest strategies for spatially complex, multi-jurisdictional toothfish ... strategies to be developed for the Australian and French fisheries, as well as develop tools that can be used ... to assist assessing other spatially structured fisheries. We provide (1) an outline of the project ...

   Meeting Document : WG-SAM-15/37 : Auteur(s): P. Burch, C. Péron, D. Welsford, P. Ziegler, T. Lamb, T. Robertson (Australia), G. Duhamel, N. Gasco, P. Pruvost, C. Chazeau and R. Sinègre (France)

7. Validating the Gasco-method for depredation estimation in Subarea 48.3

   depredation model. Here this method was adapted for Subarea 48.3 and compared to the outputs from an ... fisheries have a data collection programme that is sufficiently long established, or detailed, to allow for ... model estimation of the lost catch. A new method was developed in 2014 that used an observed change in ... alternative long-standing model estimation approach feeding into the CASAL assessment for toothfish. The new ...

   Meeting Document : WG-SAM-16/32 : Auteur(s): M. Söffker and T. Earl

8. A new plan for pelagic ecological research within the US AMLR Program

   Abstract:  This document outlines the concept and rationale for movement to an instrument-based ... ship-based approach is no longer economically feasible. An instrument-based research program, in lieu ... Antarctic. Author(s):  C. Reiss and G. Watters Title:  A new plan for pelagic ecological research within the ... :  Content Approved Delegation responsibility for releasing documents:  United States of America ...

   Meeting Document : WG-EMM-17/04 : Auteur(s): C. Reiss and G. Watters

9. Some considerations for the further development of statistical summaries of CEMP indices

   Abstract:  A potential method is presented for combining data collected as part of the CCAMLR ... ecosystem monitoring programme (CEMP) into a single index for each of the predator, prey and environment ... -EMM for identifying anomalies in CEMP parameters is examined by means of simulation tests. The power ... values have appeared in the data. An alternative procedure, using baseline mean and variance estimates ...

   Meeting Document : WG-EMM-Stats-97/07 : Auteur(s): de la Mare, W.K.

10. Acoustic data for the 1994 Krill Flux Workshop

    Abstract:  A methodology is described which when applied to data from an acoustic survey will ... yield mean krill density along an arbitrary section through the survey area, giving results compatible ... a section given an oceanographic dataset of current direction and speed. The two programs produce ... :  Acoustic data for the 1994 Krill Flux Workshop Approval:  Approved ...

    Meeting Document : WS-Flux-94/04 : Auteur(s): Secretariat

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