Résultats de la recherche
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An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
primarily based on the 2005 assessment implemented in the Generalised Yield Model (GYM) using survey data of ... the abundances of juvenile fish but adding fishery catch-at-length data, including a standardised ... catch-per-unit-effort (CPUE) series. The base-case scenario was then extended to include estimates of ... IUU catch and mark-recapture data. Key sensitivity trials were also used to explore the tension ...
Meeting Document : WG-FSA-SAM-06/14 : Auteur(s): A. Constable, S. Candy and I. Ball (Australia)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man made debris at Bird Island, South Georgia, during the 2006 winter and 2006/07 breeding season
Abstract: Results of the survey of entanglements of Antarctic fur seals at Bird Island, South ... Georgia for the 17th consecutive winter (2006) and 19th consecutive summer (2006/07) are reported here. A ... total of 41 winter entanglements were observed in the reporting period compared to 2 observed in the ... previous winter. This is the second highest winter total since records began in 1990 (the highest was in ...
Meeting Document : SC-CAMLR-XXVI/BG/17 : Auteur(s): Delegation of the United Kingdom
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Fisheries in the Southern Ocean – an ecosystem approach. Trans. Roy. Soc. Lond. (in press)
Abstract: The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... extended to the application of a precautionary approach in the late 1980’s. In our review we deal primarily ... with the science–related aspects of CCAMLR and its development towards an ecosystem approach to the ... management of the living resources of the Southern Ocean. To assist the Commission in meeting objectives, as ...
Meeting Document : SC-CAMLR-XXIV/P01 : Auteur(s): Kock, K.-H., K. Reid, J. Croxall and S. Nicol
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
Abstract: A new method for estimating illegal fishing effort is put forward. The results from ... this new method are similar to the Agnew and Kirkwood method and this suggests that the current method ... observations reflects zero illegal fishing. The new method performs better in the case of zero detections and ... can potentially better handle the evasion of detection by illegal activity. Both the new and the ...
Meeting Document : WG-FSA-04/63 : Auteur(s): I. Ball (Australia)
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Preliminary standardised CPUE analysis of the New Zealand toothfish fishery in Subarea 88.1 from 1997/98 to 2001/02
Abstract: This report provides the first analysis of standardised catch per unit of effort (CPUE ... ) from the exploratory fishery for Antarctic toothfish Dissostichus mawsoni, which has operated in ... Subarea 88.1 for five seasons, from 1997 to 2002. Two analyses are presented. The first (all-ground ... ) analysis reviewed catch from 1998 to 2002 (excluding the 1997 season as insufficient data were available ...
Meeting Document : WG-FSA-02/41 : Auteur(s): R.G. Blackwell and S.M. Hanchet (New Zealand)
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Modelling the impact of fishery by-catches on albatross populations
Abstract: 1. Several albatross species, including the wandering albatross Diomedea exulans, have ... -catch in longline fisheries and this mortality has been implicated in the population declines. 2. We ... developed a deterministic, density-dependent, age-structured model for assessing the effects of longlining ... the Crozet Islands, data on albatross abundance from 1960 to 1995, and reported effort data from the ...
Meeting Document : WG-FSA-01/18 : Auteur(s): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)
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What do we know about fish stocks in the Southern Scotia region? A review and prospects for future research
Abstract: Work on finfish in the southern Scotia Arc was restricted to taxonomy until the end of ... the 1960’s. Commercial exploitation, primarily on mackerel ice fish, Champsocephalus gunnari, and ... marbled notothenia, Notothenia rossii, started around the South Orkney Islands (60 – 62° / 43 – 47° W) in ... 1977/78 and close to Elephant Island and the lower South Shetland Islands (60 – 62° S / 54 – 62° W) in ...
Meeting Document : WG-FSA-00/14 : Auteur(s): K.-H. Kock (Germany) and C. Jones (USA)
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Analysis of trawl data from the South Georgia krill fishery
Abstract: Data from individual trawls carried out by vessels operating in the krill fishery at ... South Georgia are examined and a range of descriptive measurements reflecting the operation of the ... fishery are produced. The measurements indicate that the krill fishery at South Georgia is geographically ... focussed, operating in a limited area along the shelf edge on the northern coast of the island. Each day a ...
Meeting Document : WG-EMM-97/41 : Auteur(s): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.
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MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA
Abstract: The South Georgia region supports a high biomass of krill that is the subject to high ... inter-annual variability. The lack of a self-sustaining krill population at South Georgia means that ... understanding the mechanism underlying these observed population characteristics is essential to a successful ... ecosystem-based management of any krill fishery in the region. Krill acoustic density data from surveys ...
Meeting Document : WG-EMM-08/48 : Auteur(s): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)
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Preliminary study on the breedings of chinstrap and gentoo penguins at Barton Peninsula, King George Island
Abstract: A preliminary survey on 2 species of penguins, chinstrap and gentoo was made in the ... penguin rookery on Barton peninsula near King Sejong Station during 1992/93 breeding season based on the ... document breeding chronology and give a measure of breeding success. The nests to be monitored were ... selected from several locations scattered in the colony. The nests were visited by 2-3 day interval and the ...
Meeting Document : WG-CEMP-93/23 : Auteur(s): H.-C. Shin and S. Kim (Republic of Korea)