Search results
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Assessing the feasibility of regional surveys of land-based predator abundance in the Southern Ocean: a framework for decision making and planning
Abstract: In 2000 WG-EMM discussed the need for region-wide and circum-Antarctic estimates of ... abundance of land-based predators. At the 2001 meeting of WG-EMM it was proposed that a workshop be held in ... 2002 to assess the feasibility of such broad-scale surveys, and a small intersessional correspondence ... group was formed to scope out the terms of reference and method of operation for the workshop. The ...
Meeting Document : WG-EMM-02/45 : Author(s): C. Southwell (Australia)
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Population dynamics of the wandering albatross (Diomedea exulans) on Macquarie Island and the effects of mortality from longline fishing
Abstract: The estimated breeding population of wandering albatrosses on Macquarie Island ... . Mark-recapture analysis shows that the population is not closed (i.e., subject to immigration and ... emigration). The decline is correlated with the onset of large-scale fishing for tuna in the southern ... hemisphere using longlines. The effect of longline mortality on the population dynamics of the wandering ...
Meeting Document : WG-IMALF-94/07 : Author(s): William K. de la Mare and Knowles R. Kerry (Australia)
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Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery. (Component of SC-CAMLR-VI/BG/4)
Abstract: The history of the Japanese krill fishery is reviewed briefly. Important aspects of the ... fishing operation are the constraints imposed by processing rate limitations on the vessels, and product ... quality considerations- in particular the increasing tendency to avoid catching "green” krill. These ... . During the high season, Catch-per-Towing-Time seems likely to index only within-swarm density. Search ...
Meeting Document : WS-KCPUE-89/03 : Author(s): D.S. Butterworth (South Africa)
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The Use of Penguin Stomachal Contents for the Simultaneous Study of Prey and Predator Parameters
Abstract: Penguins selectivity for krill size is shown as highly sensitive to the statistical ... assumptions made in the analysis of data. Nested designs are proposed as the correct approach because lack of ... independence between krill found in the stomach of a given penguin prevents the pooling of krill lengths from ... different samples. Samples taken at Bahía Esperanza are used to illustrate the different approaches. A ...
Meeting Document : WG-CEMP-89/16 : Author(s): E. Marschoff and B. González (Argentina)
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Preliminary assessment of the potential for the proposed bottom fishing activities to have significant adverse impact on vulnerable marine ecosystems
Abstract: The Secretariat has received a notification from the UK for exploratory fisheries for ... the potential for the proposed bottom fishing activities to have significant adverse impact on ... letter, the UK advised that the notification was intentionally submitted before the 25 July deadline so ... that the data enclosed will be available for discussion by WG-EMM in their consideration of VME impacts ...
Meeting Document : WG-EMM-10/33 : Author(s): United Kingdom
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The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)
Abstract: Commercial exploitation of fish stocks around Elephant Island and the lower South ... Shetland Islands ceased after the 1989/90 season. One of the larger and most abundant species in the area ... Georgia. Six surveys were conducted by the US and Germany from 1998 to 2012 to investigate if and to what ... perturbations on a fish stock by recruitment failure as one of them. Data from the 1980’s and 1990’s (1983, 1985 ...
Meeting Document : WG-FSA-12/20 : Author(s): K.-H. Kock (Germany) and C.D. Jones (USA)
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Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries
, collected during the 2000-2011 fishing seasons in Division 58.5.2 and outside the CCAMLR area at Macquarie ... Island were processed. The inclusion of these datasets have improved the estimates of key parameters ... , as well as allowing more precise estimates of the selectivity of the different fishing gears used in ... these fisheries. The inclusion of catch at age data is shown to substantially improve the precision of ...
Meeting Document : WG-FSA-12/P07 : Author(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins
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An assessment strategy evaluation framework for testing the application of a CASAL based management system to the HIMI fishery
Abstract: A useful way of testing assessment methodology and related decisions is through the ... framework of management strategy evaluation and the simpler form of assessment strategy evaluation. Such a ... framework uses an operating model of the system to generate data against which the assessment model, or the ... paper defines the term Assessment Strategy Evaluation (ASE) and provides a practical framework for ...
Meeting Document : WG-SAM-07/13 : Author(s): I.R. Ball and S.G. Candy (Australia)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1998–1999
Abstract: Longline fishing for Patagonian toothfish Dissostichus eleginoides in the South African ... Exclusive Economic Zone around the Prince Edward Islands commenced in 1996. This paper summarises seabird ... bycatch during the year July 1998-June 1999. Data on seabird bycatch were obtained from fishery observers ... % more than the number of hooks set in 1997-98, but only 79 seabirds (150/0 of the total killed in 1997 ...
Meeting Document : WG-FSA-99/42 Rev. 1 : Author(s): P.G. Ryan and B.P. Watkins (South Africa)
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Unhappy feet: the reduction of Adélie and chinstrap penguin populations in the West Antarctic Peninsula/Scotia Sea
Abstract: New and alarming evidence has been published by Trivelpiece et al. recently about the ... reduction of the populations of Adélie (Pygoscelis adeliae) and chinstrap penguins (Pygoscelis antarctica ... ) in the West Antarctic Peninsula/Scotia Sea area. According to this scientific paper, Adélie and ... chinstrap penguin populations have declined more than 50% during the last 30 years at study colonies in the ...
Meeting Document : CCAMLR-XXX/BG/21 : Author(s): Submitted by ASOC