Resultados de la búsqueda
-
A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.
Abstract: We used Foosa and the reference set of parameterizations developed by Watters et al ... . (2008) to assess the risks and tradeoffs associated with various management strategies for subdividing ... the precautionary krill catch limit among SSMUs in Area 48. Our methodological approach follows ... directly from specifications made by the WG-SAM and the WG-EMM. We predict that the tradeoffs inherent in ...
Meeting Document : WG-EMM-08/30 : Autor(es): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)
-
OTOLITH-BASED AGEING OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS: MODELLING FIXED AND RANDOM READER ERROR USING MULTIPLE READINGS OF A REFERENCE COLLECTION
calibration require an ageing error matrix as input in order to adequately account for uncertainty in the data ... resulting from the imprecision of age determination using annual ring counts from otoliths. This paper ... describes the methods and results used to provide an ageing error matrix to the HIMI toothfish integrated ... assessment using repeat readings by 4 readers of a set of 203 reference otoliths sampled from the HIMI ...
Meeting Document : WG-SAM-09/07 : Autor(es): S.G. Candy, G.B. Nowara, D.C. Welsford and J.P. McKinlay (Australia)
-
Analysis of the stomach content in the blue-eyed shag Phalacrocorax atriceps bransfieldensis at Nelson Island, South Shetland Islands
complemented with information on shags’ foraging trips, obtained in the field by film records. Author(s): N ... Abstract: Forty stomach contents of the blue eyed shag Phalacrocorax bransfieldensis were sampled ... at Nelson Island, South Shetland Islands, in January 1994. The analysis of the diet showed that fish ... were by far the main component, followed by octopods, polychaetes and gammarids. Notothenia coriiceps ...
Meeting Document : WG-CEMP-94/31 : Autor(es): N. Coria, R. Casaux, M. Favero and P. Silva (Argentina)
-
A simulation study of the method of refining the natural mortality coefficient with Champsocephalus gunnari in Subarea 48.3 used as an example
Abstract: The method of refining the natural mortality coefficient is based on the notion that ... the free component of the regression equation between the mean-weighted coefficient of natural ... mortality as defined by the VPA and fishing effort must be equal to zero if the natural mortality ... shown that the proposed method facilitates such a refinement. When a mistake is made in the choice of ...
Meeting Document : WG-FSA-91/25 : Autor(es): P.S. Gasiukov and R.S. Dorovskikh (USSR)
-
Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery
sustainable yields. The assessment model assumes that all vessels have equal tag detection rates; as a ... ) could lead to an over-estimate of the stock biomass. In this paper we develop further an index of vessel ... -specific tag detection performance for the Ross Sea fishery using a case-control methodology which controls ... for the inter-annual spatial and temporal variability of commercial fishing operations from which tags ...
Meeting Document : WG-SAM-13/34 : Autor(es): S. Mormede (New Zealand)
-
Updating the 2017 stock assessment of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
Abstract: The Antarctic toothfish stock assessment for the Ross Sea region (Subareas 88.1 and ... 88.2AB) will be updated in 2017. The introduction of CM 91-05 (the Ross Sea region Marine Protected Area ... ) will require modifications to the previous method the estimation of catch splits in the calculation of ... precautionary yields. In addition, work will need to be carried out in the longer term that consider how the ...
Meeting Document : WG-SAM-17/41 : Autor(es): S. Mormede and S. Parker
-
Summary of the work of the CEP on Marine Protected Areas
Abstract: At CEP XIV (2011), the Antarctic Treaty Secretariat presented Secretariat Paper 6 ... “Summary of the Work of the CEP on Marine Protected Areas”. This paper reports on the development of the ... topic of Marine Protected Areas (MPA’s) in discussions of the Committee for Environmental Protection ... (CEP) since 1998. The most important discussions, including active cooperation with CCAMLR, began in ...
Meeting Document : WS-MPA-11/04 : Autor(es): Antarctic Treaty Secretariat, c/o Dr P. Penhale, CEP Representative to the CCAMLR MPA Workshop
-
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 ... model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... ), using revised catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference ... model resulted in a slightly lower estimate of initial biomass than the 2006 base case. The inclusion of ...
Meeting Document : WG-FSA-07/37 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)
-
A quantified Bayesian maximum entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the 2000 CCAMLR survey
Abstract: We present the results of an alternative method of estimating krill abundance, and ... producing maps of krill distribution, from the data collected during the 2000 CCAMLR survey of the Scotia ... Sea. Using a probabilistic Bayesian Maximum Entropy (MaxEnt) technique, density values for the ... unsurveyed off-transect portions of the survey area were found by interpolation, and thus values for total ...
Meeting Document : WG-EMM-05/42 : Autor(es): B.G. Heywood, S.F. Gull and A.S. Brierley (United Kingdom)
-
Entanglement of Antarctic fur seal Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 2001 winter and the 2002 breeding season
Abstract: Results of the survey of entanglements of Antarctic fur seals at Bird Island, South ... Georgia for the twelfth consecutive winter (2001) and fourteenth consecutive summer (2001/02) are reported ... here. The overall number of entanglements showed an increase from recent years, with 20 entanglements ... reported over winter and 48 during the summer breeding period. The number of winter entanglements was same ...
Meeting Document : SC-CAMLR-XXI/BG/04 : Autor(es): Delegation of the United Kingdom