Résultats de la recherche
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Evaluating length-frequency data and length-based performance indicators in new and exploratory fisheries
Abstract: Length-frequency data are routinely collected in CCAMLR’s fisheries and used as inputs ... to stock assessments. In CCAMLR’s new and exploratory fisheries, stock assessment techniques are ... still in development and robust conclusions on stock status based on length-frequency data alone have ... been difficult. In this paper, we show that length-frequency data on their own have little inherent ...
Meeting Document : WG-FSA-10/43 : Auteur(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)
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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 in ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged was ... of fish tagged did not match closely with that of the catch resulting in a the overlap statistic, as ... as this and others if they have arisen, to determine how to provide advice to the Commission in cases ...
Meeting Document : WG-FSA-14/31 : Auteur(s): C. Darby (United Kingdom)
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Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) program: developing ICED and CCAMLR joint activities
Abstract: The Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme ... valuable information for ecosystem-based management in the region. Following discussions between ICED and ... CCAMLR to develop joint activities in this regard, planning is underway for an ICED Workshop focussed on ... projections of change in Area 48- Developing projections of the future state of Southern Ocean ecosystems ...
Meeting Document : WG-EMM-17/36 : Auteur(s): E. Murphy on behalf of ICED SSC
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Features of chronology and breeding success of Pygoscelis papua and Pygoscelis adeliae penguins in the Wilhelm Archipelago (CCAMLR Subarea 48.1)
Abstract: We aim to investigate the qualitative changes in the habitats of two most common ... species penguin populations in the Wilhelm Archipelago Pygoscelis papua (gentoo) and Pygoscelis adeliae ... (Adelie) penguins in the CCAMLR Subarea 48.1 under the impact of climate changes and krill fishery. To ... disturbance to the penguins, the new method of registration using time-lapse cameras have been installed in ...
Meeting Document : WG-EMM-18/P13 : Auteur(s): I.V. Dykyy, G.P. Milinevsky, O.L. Savitsky, D.G. Lutsenko, P.B. Khoetsky, M.F. Veselsky, V.M. Smagol, A.O. Dzhulay, J.V. Tsaryk, K.M. Nazaruk, A.T. Zatushevsky, A.O. Simon and M.A. Telipska
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“Sailbuoy for krill” – a concept for autonomous commercial and scientific monitoring of the krill fishing in Antarctica
Abstract: Science based management of krill suffers from limitation of time-space information in ... distribution dynamics. Similarly, the industry burns unnecessary amounts of oil in long range searching of ... fishable biomass due to lack of density distribution information. In this paper, we demonstrate that new ... – science partnership in collecting environment and krill distribution data independent of vessel ...
Meeting Document : WG-EMM-18/15 : Auteur(s): O.R. Godø, G. Pedersen, D. Peddie, G. Skaret, A. Lowther, F. Grebstad and A. Lohrmann
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Proposal for a skate tagging program in the Ross Sea region to estimate the local biomass trend for starry skates (Amblyraja georgiana)
for skates in the Ross Sea region, we summarise skate catch and mark-recapture data through the 2016 ... biomass. Much of the A. georgiana catch occurs in SSRUs 88.1H and 88.1I in an area remaining open to ... fishing with respect to the Ross Sea region Marine Protected Area. For consistency in comparisons, we use ... in the 2009 and 2010 fishing seasons to estimate local Chapman biomass using CCAMLR procedures for ...
Meeting Document : WG-FSA-18/38 Rev. 1 : Auteur(s): S. Parker and M. Francis
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Modelling egg and larval transport of Antarctic toothfish (Dissostichus mawsoni) in the East Antarctic region: preliminary result using satellite data
larval transport of the Antarctic Toothfish in the East Antarctic region. This paper presents the ... observed in the experiment A-1, the majority of particles were advected eastward in the experiment A-2. A ... significant difference is that some particles reached southern shelf-slope zone (nursery ground) in the ... experiment A-2 because of effects of temporal eddy activities. In the northern continental slope region, most ...
Meeting Document : WG-FSA-2019/63 : Auteur(s): M. Mori, K. Mizobata, T. Okuda and T. Ichii
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Standardised CPUE analysis of the Antarctic toothfish fishery in CCAMLR Subarea 88.1 from 1988/89 to 2003/04
to 2004, in Subareas 88.1 and 88.2. A preliminary standardised analysis of toothfish CPUE (catch (kg ... ) per baited hook per set) carried out in 2003 compared two alternative toothfish CPUE analyses for the ... vessels that have been in the fishery over the entire time period. However, the fishing grounds were ... similar and all explained a reasonable amount (35-46%) of the variation. The variables included in the ...
Meeting Document : WG-FSA-04/25 : Auteur(s): N.L. Phillips, R.G. Blackwell and S.M. Hanchet (New Zealand)
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Principles for evaluating data collection plans in data-poor exploratory fisheries
in accordance with the principles set forth in Article II of the Convention. However, several times ... over the last five years the Scientific Committee has noted with concern the lack of progress in ... developing robust assessments of status of Dissostichus spp. in exploratory fisheries. Each additional year ... of fishing increases the risk of over-exploitation of fish stocks. In this paper we articulate a set ...
Meeting Document : WG-SAM-11/08 : Auteur(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)
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Comparison of 1981 FIBEX survey and 2000 CCAMLR survey on oceanographic variability in the Scotia Sea, Antarctica
) in order to investigate differences of oceanographic structures in the same area and summer season ... between the 1981 FIBEX survey and 2000 CCAMLR survey in the Scotia Sea, Antarctica. As a result, the ... distribution range of the cold Antarctic Surface Water less than 0°C in the 1981 FIBEX survey is clearly larger ... than the 2000 CCAMLR survey. In other words, the differences of the both surveys suggested that the ...
Meeting Document : WG-EMM-04/45 : Auteur(s): M. Naganobu and Y. Yoda (Japan)