Résultats de la recherche
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Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in June 2005
58.5.2 in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. It also ... considers the sensitivity of the assessment to (i) further consideration of the survey series and the ...
Meeting Document : WG-FSA-05/30 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)
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Notification of research-in-progress in an Australian tuna fishery of relevance to the conservation of Convention Area seabirds
Abstract: This purpose of this document is to inform CCAMLR of work-in-progress in the Australian ... eastern tuna and billfish fishery (ETBF) of potential relevance to the conservation of Convention area ... seabirds. The research plan includes (a) a line weighting experiment on a chartered tuna vessel to ... determine the effect of line weighting regimes and bait type on the sink rate of longlines. This experiment ...
Meeting Document : WG-FSA-05/13 : Auteur(s): G. Robertson, B. Wienecke, K. Lawton and B. Baker (Australia)
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Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia
Abstract: 1. Bottom trawl surveys on the South Georgia shelf indicate episodic declines in the ... abundance of the mackerel icefish Champsocephalus gunnari that, since 1990, are not directly attributable to ... commercial fishing. 2. The greatest effect has been observed in years when krill are known to have been ... scarce on the South Georgia shelf. 3. It is thought that C. gunnari survivorship is closely related to ...
Meeting Document : WG-FSA-99/63 : Auteur(s): I. Everson, G. Parkes (United Kingdom), K.-H. Kock (Germany) and I. Boyd (United Kingdom)
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ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING
Abstract: Acoustic and trawl samples obtained in the near-bottom layers covered by bottom trawl ... surveys in the South Georgia area are analyzed. The high heterogeneity of horizontal and vertical fish ... distribution in the near-bottom layers within the surveyed area is shown. Influence of this fish distribution ... heterogeneity on trawl surveys efficiency and reliability is analyzed by simulating the impact on fish biomass ...
Meeting Document : WG-SAM-09/20 : Auteur(s): S.M. Kasatkina (Russia)
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Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological investigations
Abstract: Poland began krill fishing operations in the 1976/1977 season. It has been engaged in ... krill commercial fishery since the 1986/1987 season. Maximum catches, equalling 15.9 thous tonnes. were ... , attained in the 1992/1993 season. The report presents an analysis of Polish krill catches in the 1991/1992 ... and 1992/1993 seasons. CPUEs by month in individual subareas of the Atlantic sector of the Antarctic ...
Meeting Document : WG-Krill-94/09 : Auteur(s): J. Sosinski and Z. Cielniaszek (Poland)
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A brief exploitation of the stone crab Lithodes murrayi (Henderson) off south west Africa, 1979/80
Abstract: The stone crab Lithodes murrayi was exploited briefly off South West Africa between ... November 1979 and April 1980, the fishery being terminated when the catch per unit effort fell to an ... uneconomic level. The extent of the L. murrayi grounds is examined on the basis of catch-per-unit-effort data ... . The species is largely confined to a bathymetric corridor of 500–700 m off South West Africa. Prior to ...
Meeting Document : WS-CRAB-93/21 : Auteur(s): R. Melville-Smith (South Africa)
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Can acoustic methods be used to monitor grenadier (Macrouridae) abundance in the Ross Sea region?
Abstract: Grenadiers Macrourus spp. are the main bycatch species in the exploratory longline ... fishery for toothfish Dissostichus spp. in the Ross Sea, Antarctica. Ongoing monitoring tools are needed ... to assess stock status of grenadiers in the Ross Sea and to ensure ecological relationships are ... survey in February–March 2008 provide evidence that single targets close to the bottom over the Ross Sea ...
Meeting Document : WG-FSA-12/P11 : Auteur(s): R.L. O’Driscoll, S.M. Hanchet and B.S. Miller
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Revised research plan for the exploratory fisheries for Dissostichus spp. in Division 58.4.2 in 2014/15
Abstract: The stock size for a research block (5842_1) was estimated by the CPUE x seabed analogy ... method using updated CCAMLR C2 data and reference area sizes. As we proposed at the last WG-SAM meeting ... to estimate appropriate catch limit, we propose to continue the current research operation for at ... least 3 years with the same sample size as decided at the last CCAMLR meeting in the current research ...
Meeting Document : WG-FSA-14/19 : Auteur(s): Delegation of Japan
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Protocols for trawl sampling, recording of biological data, and hydrography for the 2019 International synoptic krill survey in Area 48
the CCAMLR 2000 Survey has demonstrated that standardization of equipment and methods is one of the ... most crucial steps for any successful work during the field sampling period and later analytical work ... . The following net sampling and laboratory protocols are based on the protocols developed for the ... CCAMLR 2000 Survey. The aim is to facilitate a joint understanding of the field and laboratory work in ...
Meeting Document : WG-EMM-18/23 : Auteur(s): T. Knutsen, B. Krafft, A. Renner, G. Skaret, G.J. Macaulay and O.A. Bergstad
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Integrated analyses of circumpolar climate interactions and ecosystem dynamics in the Southern Ocean (ICED)
the increasing need to develop integrated circumpolar analyses of Southern Ocean ecosystems. The long ... in the Southern Ocean, the implications for ecosystem dynamics, the impacts on biogeochemical cycles ... , and the development of management procedures. CCAMLR community scientists have been instrumental in ... procedures that include relevant aspects of the wider operation of ocean ecosystems. This document describes ...
Meeting Document : WG-EMM-06/26 : Auteur(s): E.J. Murphy (United Kingdom), E. Hofmann (USA) and R. Cavanagh (United Kindom)