Search results
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On the state of Champsocephalus gunnari stock in Subarea 48.3 and methods of its assessment
Abstract: The unusually effective fishery on mackerel icefish (C.gunnari) in the South Georgia ... thousand tons, and the followed bottom trawl surveys by Russia and Great Britain in December 1999- February ... 2000 showed clearly a necessity to revise the methods of icefish (which is near-bottom and pelagic fish ... species) biomass assessment based on the results of bottom trawl surveys. A question on unreliability of ...
Meeting Document : WG-FSA-00/45 : Author(s): K. Shust, V. Senioukov, P. Gasiukov and A. Kozlov (Russia)
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation
other model parameters in integrated assessments via CASAL for the Heard and McDonald Islands (HIMI ... R. Both use the same Poisson likelihood for annual number of recaptures by age class, and both model ... the age-structured population for each fishing year by annual recursive use of difference equations ... (ODE) for within-year population dynamics. The difference in the models derives from differences in ...
Meeting Document : WG-SAM-10/11 Rev. 1 : Author(s): S.G. Candy (Australia)
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Using production models to assess the stock of Paralomis spinosissima around South Georgia Island
) data from the 1991/92 fishery for Paralomis spinosissima around South Georgia Island. The four models ... recruitment function. The best fitting model was Model 1. Model 1 had three parameters: an estimate of initial ... abundance (N0), an estimate of the scaling coefficient relating abundance to CPUE (q), and a recruitment ... parameter (a). The generalized likelihood ratio was used to place 95% confidence bounds around the parameter ...
Meeting Document : WG-FSA-93/23 : Author(s): George Watters (USA)
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
timings and to validate annulus formation. Although in the literature it has been reported that N. rossii ... in the South Shetland Islands hatches in spring, our daily ring back counting in otoliths from the ... between February and March and another in winter between July and August. The maximum and minimum ages ... estimated for the pelagic blue phase and demersal brown phase fingerlings were respectively 227 and 240 days ...
Meeting Document : WG-FSA-12/04 : Author(s): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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Foraging interactions of wandering albatrosses Diomedea exulans breeding on Marion Island with longline fisheries in the southern Indian Ocean
attempt to scavenge baited hooks deployed by long-line fishing vessels. We studied the foraging ecology of ... Wandering Albatrosses breeding on Marion Island in order to assess the scale of interactions with known long ... -line fishing fleets. During incubation and large chick-rearing, birds foraged farther away from the ... overlap with the local Patagonian toothfish Dissostichus eleginoides long-line fishery. Tracks of birds ...
Meeting Document : WG-FSA-01/10 : Author(s): D.C. Nel, P.G. Ryan, J.L. Nel, N.T.W. Klages (South Africa), R.P. Wilson (Germany) and G. Robertson (Australia)
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The effects of an experimental hake Merluccius capensis/paradoxus longline fishery on Procellariiform seabirds in South Africa - a preliminary investigation
Abstract: Due to the detrimental effect longline fisheries have had on seabirds in other parts of ... the world, concern was raised as to the effect an experimental Hake longline fishery would have on ... 100% of the catch on longlines during setting despite the fact that they were not the most abundant ... species around fishing vessels either during the day or night. Extrapolations showed that 2 vessels were ...
Meeting Document : WG-FSA-95/21 : Author(s): Barnes, K.
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The Ross Sea cephalopod community: insights from stable isotope analysis
identified as having relatively high importance in the food-web of the Ross Sea. However, information on the ... trophic ecology of the cephalopod assemblage of the Ross Sea region is poor. Stable isotope signatures of ... taxa sampled from the Ross Sea region. Samples were acquired through scientific trawls and from ... stomachs of Antarctic toothfish Dissostichus mawsoni returned from the longline fishery. Most octopods were ...
Meeting Document : WG-EMM-12/55 : Author(s): D.R. Thompson, M.H. Pinkerton, D.W. Stevens (New Zealand), Y. Cherel (France), S.J. Bury (New Zealand)
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Some aspects of size composition dynamics of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea (Statistical Subarea 88.1)
Abstract: The analysis of the data on size composition of Antarctic toothfish (Dissostichus ... mawsoni) from catches in different statistical areas of the Ross Sea was given. Biological data for two ... the size composition of the fished part of Antarctic toothfish population. It was noted that during ... both periods of the fishery, in the southern statistical areas (SSRU H, I, K, L), the portion of small ...
Meeting Document : WG-FSA-12/17 : Author(s): A.K. Zaytsev (Ukraine)
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The Scientific Committee on Antarctic Research (SCAR) Annual Report 2015/2016
Abstract: SCAR is an interdisciplinary body of the International Council for Science (ICSU), and ... , and to promote scientific knowledge, understanding and education on any aspect of the Antarctic region ... and its role in the Earth System. SCAR also provides independent and objective scientific advice and ... information to the Antarctic Treaty System and other bodies and facilitates the international exchange of ...
Meeting Document : SC-CAMLR-XXXV/BG/26 : Author(s): Submitted by SCAR
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Marine Ecosystem Assessment for the Southern Ocean (MEASO)
Abstract: A first Marine Ecosystem Assessment for the Southern Ocean (MEASO) is under development ... happening now and into the future, and what may need to be planned for, in terms of research and management ... . The aim is to have a quantitative assessment that enables managers to achieve consensus in adapting ... held in Hobart in early April 2018 (http://www.measo2018.aq/). The conference provided an opportunity ...
Meeting Document : SC-CAMLR-XXXVII/BG/22 : Author(s): A. Constable, J. Melbourne-Thomas, R. Trebilco and M. Brasier