Search results
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Approaches to monitoring and assessing toothfish in new and exploratory fisheries, with particular reference to Subarea 88.1
and assessing toothfish in New and Exploratory fisheries. We review standardised CPUE analysis ... recapture experiments, or trawl surveys, be used in conjunction with experimental manipulation of effort to ... effort manipulation approach in all New and Exploratory fisheries, and in particular the current active ... monitoring and assessing toothfish in new and exploratory fisheries, with particular reference to Subarea ...
Meeting Document : WG-FSA-SAM-04/08 : Author(s): ODriscoll, R.L., Hanchet, S.M.
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Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data
difficulty in accurately estimating key parameters, and consequently introduce bias into an abundance ... estimate. We also review the methods that have been used in CCAMLR tag recapture to program to mitigate ... against this bias, or to account for their effects in assessment models. In nearly all cases, examples of ... : Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data Approval ...
Meeting Document : WG-SAM-12/23 : Author(s): D.C. Welsford and P.E. Ziegler (Australia)
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Can acoustic methods be used to monitor grenadier (Macrouridae) abundance in the Ross Sea region?
Abstract: Grenadiers Macrourus spp. are the main bycatch species in the exploratory longline ... fishery for toothfish Dissostichus spp. in the Ross Sea, Antarctica. Ongoing monitoring tools are needed ... to assess stock status of grenadiers in the Ross Sea and to ensure ecological relationships are ... survey in February–March 2008 provide evidence that single targets close to the bottom over the Ross Sea ...
Meeting Document : WG-FSA-12/P11 : Author(s): R.L. O’Driscoll, S.M. Hanchet and B.S. Miller
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Commercial fishing vessel as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel
Abstract: The climate-induced changes presently seen in the ecosystems of Antarctic region ... require a precautionary approach with respect to the human use of these ecosystems. In particular ... the harvested stocks and their ecosystems. In this paper we describe the potential of using commercial ... fishing vessels to bridge the gap in research vessel capacity. The various tasks and required ...
Meeting Document : WG-EMM-13/15 : Author(s): O.R. Godø (Norway), C. Reiss (USA), V. Siegel (Germany) and J.L. Watkins (United Kingdom)
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Adélie penguin breeder abundance in CCAMLR Divisions 58.4.1 and 58.4.2
future krill fisheries in those regions. We present here estimates of the breeding Adélie penguin ... population for Divisions 58.4.1 and 58.4.2 in east Antarctica. We estimated that around 1.31 million pairs of ... Adelie penguins were attempting to breed at the time of the surveys in Divisions 58.4.1 and 58.4.2. This ... estimate is substantially higher than the previously available estimate in Woehler (1993) of 767,000 ...
Meeting Document : WG-EMM-13/09 : Author(s): C. Southwell, J. McKinlay, L. Emmerson (Australia), A. Takahashi (Japan), C. Barbraud, K. DeLord and H. Weimerskirch (France)
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Progress report on the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13 and 2013/14
Abstract: Japan and South Africa are undertaking a multi-year research plan in Statistical ... Subarea 48.6 as outlined in CM 41-04 (2012 & 2013). Progress achieved during the 2012/13 season is ... Dissostichus resource in Subarea 48.6 to be undertaken next year. Concern is expressed over the rise of IUU ... activity in Subarea 48.6 and the possible negative consequences for the Research being undertaken. Author(s ...
Meeting Document : WG-SAM-14/10 : Author(s): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
changes in hill density and therefore can provide indications of short term variations in krill ... value in interpreting the results from ecosystem assessments such as that in progress under the auspices ... . Everson (United Kingdom) and K.-H. Kock (Germany) Title: Variations in condition indices of mackerel ...
Meeting Document : WG-EMM-00/44 : Author(s): I. Everson (United Kingdom) and K.-H. Kock (Germany)
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CPUEs and body length of Antarctic krill density during the 1997/98 season in Area 48
winter of 1997/98 season in the Area 48. The fishing grounds were formed around the South Shetland ... -May. From late May till late June, the operation took place in the north of the South Shetland Islands ... and north east of South Georgia. Size composition differed among the areas. In the west of the ... differed among the periods. In the north east of South Georgia, single mode (approx. 37-39mm) with narrow ...
Meeting Document : WG-EMM-99/48 : Author(s): S. Kawaguchi (Japan)
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REFERENCE OBSERVATIONS FOR VALIDATING AND TUNING OPERATING MODELS FOR KRILL FISHERY MANAGEMENT IN AREA 48
Abstract: In 2007 WG-SAM defined a set of reference observations for validating and tuning ... reference points for the density of krill, and the abundance of “generic” seals, penguins and whales in 1970 ... considered a definitive description of the relevant dynamics. This exercise resulted in population sizes for ... initialising models than those published in Hill et al (2007). Author(s): S. Hill (United Kingdom), J. Hinke ...
Meeting Document : WG-EMM-08/10 : Author(s): S. Hill (United Kingdom), J. Hinke (USA), É. Plagányi (South Africa) and G. Watters (USA)
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Fishes caught along with the Antarctic krill in the vicinity of the South Shetland Islands during the austral summer months of 1994
of 1994 (from January 12 to February 18) on board F/V Niitaka Maru in the north of the South Shetland ... in 25 trawl catches (Table 1). Among by-catch fishes, juvenile Lepidonotothen larseni was the most ... also secondary abundant. To compare abundance of each fish species, the index of its occurrence in ... of krill concentration (Figs. 1 and 2). The large incidental catch of fishes occurred in hauls with ...
Meeting Document : WG-Krill-94/25 : Author(s): T. Iwami (Japan)