Search results
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Report of a domestic workshop to identify U.S. stakeholders’ objectives and protection priorities for one or more marine protected areas in Planning Domain 1
consider to be priorities for spatial protection, and estimates of “conservation targets” that can be ... objectives that U.S. stakeholders have for MPAs in Domain 1, a map of the areas that U.S. stakeholders ... various islands and archipelagos such as the South Shetland Islands. Consistent with these protection ... priorities, conservation targets were generally highest for objects that occur inshore or over the ...
Meeting Document : WG-EMM-15/34 : Author(s): G. Watters (USA)
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Age-structured production model for toothfish at South Georgia
decaying function of age, with three easily interpretable parameters. When only a single selectivity curve ... frequency data achieved last year, but the fit was still poor. The fit to the CPUE was also poor. With ... selectivity parameters allowed to be estimated on an annual basis the fits are substantially improved. However ... , by allowing all parameters to be estimated in this way the model is over-parameterised and regularly ...
Meeting Document : WG-FSA-SAM-05/18 : Author(s): A. Payne, G.P. Kirkwood, R. Hillary and D.J. Agnew (United Kingdom)
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THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
trips were used to define a range for various data quality metrics considered to be informative with ... informative datasets were selected comprising trips with high (above median) rates of recovery of previously ... respect to tagging data. Other trips with data quality metric values within these ranges were added to the ... dataset. Where the initial informative dataset was selected comprising trips with above median rate of tag ...
Meeting Document : WG-FSA-09/35 : Author(s): D.A.J. Middleton (New Zealand)
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Analysis of the longline fishery data in the Ross Sea (SSRUs 881B, C and G)
should be treated. It was also shown that the current approach to analyze longline fishery data in the ... duration (min) and hauling speed (min/1000 hooks) were analyzed. Our analysis shows that there is a ... interval of 99,7% CI. These CPUE and catch values are statistically unreliable and questionable high with ... respect to the fishery data in the year under consideration. It was shown that total questionable catch ...
Meeting Document : WG-FSA-16/14 : Author(s): S. Kasatkina
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
and the resulting data should not be used in stock assessments with only few years of data available ... . Biomass estimates generally improved with more and better quality tagging data, however important nuances ... emerged within this overall trend. The results show that in the early stages of the tagging program, a ... with a low tag size-overlap, even with large numbers, is likely to result in overestimates of biomass ...
Meeting Document : WG-FSA-12/18 : Author(s): P.E. Ziegler (Australia)
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Growth rates of Antarctic fur seals as indices of environmental conditions
weighing cross-sections of the population were compared with measured/inferred changes in the the ... population available for sampling appear to invalidate the widely held assumption that inter-annual ... differences in growth rate can reliably be derived from differences in the slope of a linear relationship ... mass at age in each year compared to the multi-year mean, that was not dependent on assumptions of ...
Meeting Document : WG-EMM-01/20 : Author(s): K. Reid (United Kingdom)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2016
. This further scientific work will ensure that Part C (together with Parts A and B) of the Scientific ... the development of a marine protected area in the Weddell Sea planning area. In accordance with the ... /BG/11, /BG/12 and /BG/13). The Scientific Committee is invited to note that: Parts A and B of this ... scientific background are finalised, including final editorial corrections; Part C has been (and will be ...
Meeting Document : SC-CAMLR-XXXV/01 Rev. 1 : Author(s): Delegation of Germany
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Recommendations for CCAMLR tagging procedures
Abstract: With the recognition that CCAMLR tagging programmes are used for abundance estimation ... of toothfish and skates, tagging operations need to be appropriately supported through documentation ... , training, and supplies. This paper reviews how tagging programme information could be effectively organised ...
Meeting Document : WG-SAM-12/31 : Author(s): S. Parker, J. Fenaughty (New Zealand), E. Appleyard (Secretariat) and C. Heinecken (South Africa)
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A proposal for streamlining the work of the Scientific Committee for the Conservation of Antarctic Marine Living Resources
a CCAMLR context. It is proposed that the working groups of the Scientific Committee be revised to ... Fishing could be spread across all three with a more dedicated report in the Assessment working group as ... Abstract: The work of the Scientific Committee is expanding with a duplication of some functions ... streamline the work and to help reduce the number of groups needing to be attended by our experts. The ...
Meeting Document : WG-EMM-05/35 : Author(s): A.J. Constable (Australia)
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Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models
vulnerable marine ecosystems (VMEs). We describe a spatially explicit production model that can be used to ... size of these impacts in the scenarios tested were small, we recommend that research be focused, at ... , and spatial scale, with and without management by areal closures. Further, the management action ... simulated considered a range of areal closure radii and bycatch trigger thresholds. We conclude that ...
Meeting Document : WG-SAM-10/19 : Author(s): A. Dunn, S.J. Parker and S. Mormede (New Zealand)