Search results
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Estimating the level of illegal fishing using simulated scaling methods on detected activity
whether the method for estimating catches from illegal, unregulated or unreported (IUU) fishing developed ... , Annex 5, paragraph 3.18). The results of these simulations suggest that more information on IUU fleet ... the number of IUU fishing days, particularly for areas where patrolling may be relatively infrequent ... or prone to evasion. Also, the assessment method may need to be refined to take these issues into ...
Meeting Document : WG-FSA-SAM-04/14 : Author(s): Ball, I.
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Preliminary report on the South Orkneys Ecosystem Studies (SOES) field work undertaken by RRS James Clark Ross (JR15004) and associated field camps in January–February 2016
Abstract: This paper briefly describes the rationale and structure of the research cruise that ... formed a key component of the co-ordinated, multi-national South Orkney Ecosystems Studies focusing on ... the krill-based ecosystem in the main fishing area in Subarea 48 undertaken in the austral summer of ... 2015-16. The research cruise consisted of collection of at-sea data on the distribution, abundance and ...
Meeting Document : WG-EMM-16/19 : Author(s): J. Watkins, O.R. Godø, S. Fielding, C. Reiss, P. Trathan and E. Murphy
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A preliminary assessment and revised growth model of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2017 random stratified trawl survey
Abstract: The annual random stratified trawl survey was undertaken in Division 58.5.2 in the ... vicinity of Heard Island and the McDonald Islands during April 2017. This paper provides an updated growth ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... Generalized Yield Model). The 2017 survey showed a large 3+ cohort dominating the population. An updated ...
Meeting Document : WG-FSA-17/22 : Author(s): D. Maschette, P. Burch, P. Yates and D. Welsford
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Genetic variation among populations of the Antarctic toothfish: evolutionary insights and implications for conservation
with over 70% of the world’s fish stocks being fully exploited and in many cases overexploited. On top ... of this, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has ... granted commercial fishing permits in the most remote marine environment on earth, the high latitude ... Southern Ocean. The primary target of these new commercial fishing ventures is the large pelagic ...
Meeting Document : WG-FSA-01/69 : Author(s): R.W. Parker, K.N. Paige and A.L. DeVries (USA)
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Long term variability in the diet and reproductive performance of penguins at Bird Island, South Georgia
present in 89 % of samples and were the main prey (> 50 % by mass) in 10 years of the study. Antarctic ... and were the main prey in 12 years, with Champsocephalus gunnari and Lepidonotothen larseni the most ... frequently recorded species, in 51 % and 33 % of samples respectively. The energy or mass of krill in the ... diet was the most reliable predictor of breeding success (the number of chicks fledged per breeding ...
Meeting Document : WG-EMM-17/P02 : Author(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan
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The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill
Abstract: A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the ... main feeding ground for krill larvae. Observations from our winter cruise to the southwest Atlantic ... sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone ... is a food-poor habitat for larval development. In contrast, the more open marginal ice zone provides ...
Meeting Document : WG-EMM-18/P04 : Author(s): B. Meyer, U. Freier, V. Grimm, J. Groeneveld, B.P.V. Hunt, S. Kerwath, R. King, C. Klaas, E. Pakhomov, K.M. Meiners, J. Melbourne-Thomas, E.J. Murphy, S.E. Thorpe, S. Stammerjohn, D. Wolf-Gladrow, L. Auerswald, A. Götz, L. Halbach, S. Jarman, S. Kawaguchi, T. Krumpen, G. Nehrke, R. Ricker, M. Sumner, M. Teschke, R. Trebilco and N.I. Yilmaz
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The relative impacts of Autolines and Spanish longlines on vulnerable marine ecosystems
Abstract: The Commission aims to protect vulnerable marine ecosystems (VMEs) and has established ... . Members have made substantive and important scientific contributions to support the Commission’s objective ... of protecting VMEs, but work comparing the effects of different gear types has been relatively ... limited. We used data collected by the longline fishery in Subarea 88.1 to compare the impacts of ...
Meeting Document : WG-FSA-12/27 : Author(s): T. Gerrodette and G. Watters (USA)
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Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)
Abstract: Grenadiers (Macrourus spp.) are the main bycatch species in the exploratory longline ... fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ... index the relative abundance of grenadiers and be useful for exploring spatial distribution. Automated ... longline catches of grenadiers and toothfish. Single targets were most abundant within 250 m of the bottom ...
Meeting Document : WG-FSA-14/62 : Author(s): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)
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Results of 2016 pop-off satellite archival tagging of Antarctic toothfish in the Ross Sea region
Abstract: In 2016, scientists from the USA and New Zealand undertook a collaborative initiative ... to deploy pop-off satellite archival (PSAT) tags on Antarctic toothfish (Dissostichus mawsoni) on the ... southern shelf (SSRUs 88.1M,J,L) and northern seamount (SSRUs 88.1B,C) areas of the Ross Sea region. The ... available types of PSAT tags, and to develop methods to support research and monitoring of the Ross Sea ...
Meeting Document : WG-SAM-17/33 : Author(s): C.D. Jones and S.J. Parker
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CCAMLR Bioregionalisation Workshop (Brussels, Belgium 13 to 17 August 2007) Update of benthic bioregionalisation of the Southern Ocean
Abstract: At the CCAMLR Bioregionalisation Workshop, 13-17 August 2007, it was agreed that ... physical variables could be used to produce primary physical regionalisations of the Southern Ocean and ... the process and results of the primary benthic regionalisation completed at the Workshop and ... subsequent refinements to this regionalisation including the use of additional data which could not be ...
Meeting Document : SC-CAMLR-XXVI/BG/28 : Author(s): Co-conveners, CCAMLR Bioregionalisation Workshop