Search results
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
the fishing seasons. From these data we develop semi-empirical indices of acoustic biomass in a Generalized ... datasets and used to mimic data that might be collected by the commercial fishery during the fishing ...
Meeting Document : SG-ASAM-15/03 : Author(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Comparison of NASC values calculated by swarm-based and grid-based acoustic data processing methods for Antarctic krill density estimation
of four surveys in 48.1 fishing area were calculated using both the swarm-based and conventional grid ... in 48.1 fishing area were calculated using both the swarm-based and conventional grid-based acoustic data ...
Meeting Document : SG-ASAM-18/04 Rev. 1 : Author(s): X. Yu, X. Wang and X. Zhao
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Proposed continuation of a multi-Member longline survey on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2018/19 by Japan and South Africa
research activities. From 2018/19 fishing season, Norway had considered the joint survey participation ... . From 2018/19 fishing season, Norway had considered the joint survey participation, but due to various ...
Meeting Document : WG-SAM-18/04 : Author(s): Delegations of Japan and South Africa
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A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season
-convergence, particular in the declining right-hand limb of the fishing selectivity parameters. However, multi ... of non-convergence, particular in the declining right-hand limb of the fishing selectivity parameters ...
Meeting Document : WG-FSA-05/33 : Author(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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Revised research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan
the current research operation in Subarea 48.6 for the next fishing season with the same survey design ... operation in Subarea 48.6 for the next fishing season with the same survey design. ...
Meeting Document : WG-FSA-17/10 : Author(s): Delegations of Japan and South Africa
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Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program
that could be included in an index. The CEMP indices are designed to help determine when fishing for a prey ... that may assist CCAMLR in making decisions on the effects of fishing on predator populations and reports ... in little change in the median performance but in a reduction in the range between the confidence ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 101–117 : Author(s): de la Mare, W.K. and A.J. Constable
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Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia
of 1 577 and 933 tonnes for the 2009/10 and 2010/11 fishing seasons respectively. The respective estimates ... and 933 tonnes for the 2009/10 and 2010/11 fishing seasons respectively. The respective estimates using ... according to the CCAMLR decision rules of 1 577 and 933 tonnes for the 2009/10 and 2010/11 fishing seasons ... the next fishing period begins – assumed to be 0.9 of the first ‘year’. 4. At this point the TAC ... of the two-year population projection is equal to 75% of that expected in the absence of fishing. The whole ... Group on Fish Stock Assessment (WG-FSA) reports respectively. Biomass and length-density data for 2009 ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew
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Comparisons in prey distribution between inshore and offshore foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
; (3) Myctophid fish occurred near surface at night in the slope/offshore region; their ventral light organs may ... ; (3) Myctophid fish occurred near surface at night in the slope/offshore region; their ventral light organs may ... of krill and availability of myctophid fish may make the slope/offshore region favorable foraging areas ... of krill and availability of myctophid fish may make the slope/offshore region favorable foraging areas ...
Meeting Document : WG-EMM-96/49 : Author(s): Ichii, T., Bengtson, J.L., Boveng, P., Cameron, M.F., Naganobu, M., Meyer, W.R., Hiruki, L.M., Takao, T., Jansen, J.K., Kawaguchi, S.
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A false positive in the CCAMLR tag overlap statistic arising from low catch volume and consequent limited sample size
Abstract: The draft CCAMLR compliance report has recorded that when fishing in Subarea 88.2 ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged ... of fish tagged did not match closely with that of the catch resulting in a the overlap statistic ... that this was not a case of only small fish being tagged. The low tag overlap statistic is shown to be a sampling artefact ...
Meeting Document : WG-FSA-14/31 : Author(s): C. Darby (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 ... , Gobionotothen gibberifons, was only lightly exploited compared to more northerly fishing grounds such as South ... extent Antarctic fish stocks recover from exploitation and how natural causes may add to man-made ... 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)