Search results
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Assessment of fishable krill biomass on the basis of the acoustic surveys results using geostatistical methods
Abstract: ABSTRACT Applicability of geostatistical methods in processing the acoustic fields of ... krill density based on the acoustic survey data is demonstrated. The results obtained indicate ... usefulness of these methods in studying the structure of krill density field for biomass assessment in ... compliance with different thresholds of their fishery importance. The structure of krill density field in ...
Meeting Document : WG-SAM-10/07 Rev. 1 : Author(s): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Quantifying the impacts of ice on demersal longlining in CCAMLR Subarea 88.1 with updated information on the 2014/15 season
Abstract: The effect of sea ice is acknowledged as a major influence on fishing operations in ... fisheries research and management. A retrospective analysis over a 15 year period up to the 2013/14 season ... was presented in WG-FSA-14/55 to quantify the level of impact that ice conditions have on fishing by ... creating an annual fishability index. We update the analysis for the 2015 season, a challenging ice year ...
Meeting Document : WG-FSA-15/35 : Author(s): J.M. Fenaughty and S.J. Parker (New Zealand)
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A Risk Assessment and ancillary approaches to facilitate the management of the krill fishery as envisaged by WG-EMM-2019
Abstract: WG-EMM-2019 mapped out a revised management strategy which provides the highest ... likelihood that CCAMLR will be able to update its management of the krill fishery in subareas 48.1-4 by the ... time CM 51-07 expires. A key element of this procedure is the extension of the Risk Assessment to ... enable catches to be distributed across the area taking account of estimated predator demand. We request ...
Meeting Document : SC-CAMLR-38/17 : Author(s): Delegations of the United Kingdom and Australia
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Marine ecosystem acoustics (MEA): quantifying processes in the sea at the spatio-temporal scales on which they occur
monitoring. Realistic understanding of what can and cannot be achieved with the available sampling techniques ... and strategies is essential. This paper focuses on approaches for observing processes at the time ... -space scales at which they occur, which is essential for some of the management challenges of CCAMLR ... , for example the FBM. Sustainable management of fisheries resources requires quantitative knowledge ...
Meeting Document : WG-EMM-15/P01 : Author(s): O.R. Godø, N.O. Handegard, H.I. Browman, G.J. Macaulay, S. Kaartvedt, J. Giske, E. Ona, G. Huse and E. Johnsen
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A critical re-examination of the evidence for a possible dependence of Weddell seals (Leptonychotes weddellii) on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica
Abstract: There is presently debate over the degree to which the fishery for Antarctic toothfish ... (Dissostichus mawsoni; ‘toothfish’) in the Ross Sea may affect the ecological viability of top predators such as ... the assumptions underlying application of stable isotope methodology to Weddell seals, and estimate ... the potential contribution of toothfish to the diet of Weddell seals using an isotope mixing model ...
Meeting Document : WG-EMM-13/28 : Author(s): R. Eisert, M.H. Pinkerton (New Zealand), S.D. Newsome and O.T. Oftedal (USA)
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A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season
model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... ). A range of model sensitivities were examined, with the base case assuming the Ross Sea fishery as a ... , slope, and north). Model fits to the data were adequate, with the tag-release and recapture data ... providing the most information on stock size. Monte-Carlo Markov Chain (MCMC) diagnostics suggested some ...
Meeting Document : WG-FSA-05/33 : Author(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2014–15
Abstract: We provide an update of the descriptive analyses of the toothfish tagging programme in ... Subareas 88.1 and 88.2 through the 2015 season. A total of 44 827 Antarctic toothfish have been released ... years, most vessels have achieved or exceeded the required tagging rate of one toothfish per tonne of ... catch in the Ross Sea region. Tag recapture data showed that most fish are recaptured only a short ...
Meeting Document : WG-FSA-15/37 : Author(s): S.J. Parker and S. Mormede (New Zealand)
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The rate of incidental mortality of birds in the IUU longline fishery in Subarea 48.3
Abstract: Information on the rates of incidental mortality of birds experienced by IUU vessels is ... extremely difficult to obtain. CCAMLR has, in the past, used data from the 1997 legitimate fishery, when a ... large number of birds were caught and when the implementation of mitigation measures was low, to ... approximate the IUU situation. This paper describes analyses undertaken using the 1997 data to refine the ...
Meeting Document : WG-FSA-02/5 : Author(s): D.J. Agnew and G.P. Kirkwood (United Kingdom)
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CPUES and body length of Antarctic krill during 1993/94 season in the fishing grounds around the South Shetland Islands
. Main fishing grounds were persistently formed in the north of Livingston Island throughout the season ... , and the west of Elephant Island from April to May. CPUEs showed the highest values at the height of ... summer (early February- early March) in the north of Livingston Island, and April at the west of Elephant ... Island. Krill with a modal length of 41-45mm were dominant in catches, almost same as the previous season ...
Meeting Document : WG-EMM-95/51 : Author(s): Kawaguchi, S., Ichii, T., Naganobu, M.
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Use of current velocity data from fram to investigate the large scale transport of krill in the Scotia Sea
Abstract: Current velocity data from a single time realisation of the FRAM model are presented ... for particular areas of the Scotia Sea. The regions are based on the CCAMLR sub-areas and also include ... boundaries over the upper 250m of the water column. These have been combined with estimates of krill density ... and standing stocks to consider the large scale flux of krill through the regions and estimate ...
Meeting Document : WS-Flux-94/05 : Author(s): E.J. Murphy (United Kingdom)