Résultats de la recherche
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Estimating toothfish biomass in Subarea 48.3 using local depletions
out some possibility of potential as an alternative assessment method for toothfish. Author(s ... CPUE over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived at an ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ...
Meeting Document : WG-FSA-SAM-04/18 : Auteur(s): Pearce, J., Agnew, D.
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Monitoring and managing the effects of environmental change on toothfish assessments
Abstract: This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... productivity and environmental conditions are not required for this understanding to be useful. We propose that ... assessment would reduce uncertainty in management advice. The parameters that could be evaluated to for the ... variability (σ R), mean length at age, mean weight at length, natural mortality (m), and maturation ogives ...
Meeting Document : WG-SAM-18/22 : Auteur(s): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3
35 years with 50% probability, with less than 1% probability declining below 20% of B0 and would ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ... the current status of the stock is at 52% of B0. Spawning biomass has been increasing in recent years ...
Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)
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The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design
boundaries is described. The methods used for selecting the location of each survey transect are explained ... and the planned cruise tracks for each of the four vessels participating in the survey are shown ... . Details are also described for adaptively modifying the survey during its execution. This includes ... will take several years and will result in a significant increase in the knowledge of krill length ... adopted. Such an approach has been widely used in the past (for instance FIBEX - BIOMASS, 1980) and was ... gave the necessary condition for the validity of the design- based variance estimators. An ... sampling probability in that area. To overcome this, an n priori selection of sampling units for ... - ments: a review and an acoustic application. ICES J. Mar. Sci., 50: 285-298. SC-CAMLR. 1991. Report ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Auteur(s): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly
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Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme: a report on recent joint activities and links between ICED and CCAMLR
Abstract: ICED is an international multidisciplinary programme undertaking integrated circumpolar ... analyses to improve understanding of Southern Ocean change, the implications for ecosystems and for ... interest to CCAMLR. The 2018 ICED Projections Workshop, undertaken in collaboration with CCAMLR, provided ... an initial, mainly qualitative, assessment of the potential impacts of climate change on krill, their ...
Meeting Document : WG-EMM-2019/02 : Auteur(s): R.D. Cavanagh, N.M. Johnston and E.J. Murphy
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NOTIFICATION OF VULNERABLE MARINE ECOSYSTEMS IN STATISTICAL AREA 58.4.1
a simple pro-forma. Two VMEs identified during the Australian CEAMARC-CASO cruise are notified using ... Approved Document Release Consent: Yes Delegation responsibility for releasing documents: CCAMLR ...
Meeting Document : SC-CAMLR-XXVII/13 : Auteur(s): Delegation of Australia
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Bycatch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)
). In numbers, an average of about 20 fish were caught per ton of krill, and an average of about 23 fish ... krill, and an average of about 2 kg of fish were caught per hour of towing. Confidence intervals for ... noted that the results for reporting fish bycatch were not presented in CCAMLR's standard format ... were caught per hour of towing. In weight, an average of about 1.5 kg of fish were caught per ton of ...
Meeting Document : WG-FSA-95/40 Rev. 1 : Auteur(s): Watters, G.
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CCAMLR Statistical Bulletin, Vol. 29 data files
activity, calendar year and month. These data are derived from monthly STATLANT data (form 08B) validated ... Coordinating Working Party on Fisheries Statistics (http://www.fao.org/fishery/cwp/en) for use in global ... year, month and small-scale management unit (SSMU; refer gis.ccamlr.org). The catches are derived from ... STATLANT data), the catches for that month was allocated to the SSMU groups. Trade statistics ... statistics are reported for each species of toothfish (D. eleginoides and D. mawsoni) by calendar year ... Bulletin The Statistical Bulletin is published annually and contains: Catch and effort statistics ... for all fisheries in CCAMLR’s Convention Area Catch histories for selected fishery target species ... weight in metric tonnes. CCAMLR's reporting standards for catch and effort statistics support the ...
Document : Site Section: Data
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CCAMLR Statistical Bulletin, Vol. 31 data files
activity, calendar year and month. These data are derived from monthly STATLANT data (form 08B) validated ... Coordinating Working Party on Fisheries Statistics (http://www.fao.org/fishery/cwp/en) for use in global ... year, month and small-scale management unit (SSMU; refer gis.ccamlr.org). The catches are derived from ... STATLANT data), the catches for that month was allocated to the SSMU groups. Trade statistics ... is published annually and contains: • Catch and effort statistics for all fisheries in CCAMLR’s ... reported for each species of toothfish (D. eleginoides and D. mawsoni) by calendar year since 2000. The ... Convention Area • Catch histories for selected fishery target species • Trade statistics (landings and ... . CCAMLR's reporting standards for catch and effort statistics support the international standards set by ...
Document : Site Section: Data
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
subarea, derived from the subarea catch limit, appears to exceed this level in up to 20% of years due to ... (or “trigger level”), established in 1991, is 0.62 million tonnes year-1, equivalent to ~1% of the ... evidence for a decline in the abundance of krill in the 1980s, but no evidence of further decline over more ... % level considered precautionary for Antarctic krill. However, the permitted exploitation rate in each ...
Meeting Document : WG-EMM-16/21 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins