Résultats de la recherche
-
A feedback management strategy for the krill fishery in Subarea 48.1
Abstract: We present a Stage-2 strategy for in-season feedback management (FBM) of the krill ... to the WG-EMM in 2015 and is based on a broad foundation of work undertaken to address a suite of ... action items specified by the WG-EMM. A decision rule to adjust catches in groups of SSMUs (gSSMUs) is ... central to the strategy proposed here. In “plain English” that decision rule has four components. 1) If ...
Meeting Document : WG-EMM-16/48 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss
-
Estimation and correction of migration-related bias in the tag-based stock assessment of Patagonian toothfish in Division 58.5.2
Abstract: Migration has the potential to violate the assumptions of tag recapture models used in ... the assessment of toothfish stocks. Evaluating the potential bias introduced into stock assessments ... and tag-based biomass estimates when the distributions of tagged fish, fishing effort and the ... underlying stock distribution are spatially heterogeneous is currently one of the highest priorities of the ...
Meeting Document : WG-SAM-17/11 : Auteur(s): P. Burch, P. Ziegler, D. Welsford and C. Péron
-
Report on a random stratified trawl survey to estimate distribution and abundance of Dissostichus eleginoides and Champsocephalus gunnari conducted in the Heard Island region (Division 58.5.2), May–June 2007
Abstract: Since the commencement of commercial fishing in Australian waters on the Heard Island ... plateau in 1997 an annual random stratified trawl survey (RSTS) has been conducted to assess the stocks of ... Patagonian toothfish (Dissostichus eleginoides) and mackerel icefish (Champsocephalus gunnari). The 2007 ... survey had two main aims: • to assess the abundance of juvenile and adult Dissostichus eleginoides on the ...
Meeting Document : WG-FSA-07/46 : Auteur(s): G.B. Nowara and T. Lamb (Australia)
-
Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
(Division 58.5.2) was undertaken using the standard CCAMLR methods, based on the result of a randomly ... stratified trawl survey completed between 16 April and 10 May 2003. The 2003 estimate of abundance was ... approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... 1997 cohort through the population and relatively weak recruitment in 1999 and 2000. The 1+ fish ...
Meeting Document : WG-FSA-03/32 : Auteur(s): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
-
A statistical method for analysing the extent of IUU fishing in CCAMLR waters: application to Subarea 48.3
extension to other regions of the Antarctic. 2. Of the sources of information on IUU fishing, Fishery ... Protection Vessel (FPV) cruises are the most consistent and reliable. The track of the FPVs on their cruises ... to South Georgia covers all possible areas of fishing for toothfish in Subarea 48.3. The method uses ... data from FPV cruises in Subarea 48.3, and the encounters between FPVs and IUU fishing activity, to ...
Meeting Document : WG-FSA-02/4 : Auteur(s): D.J. Agnew and G.P. Kirkwood (United Kingdom)
-
AN ASSESSMENT OF ARTIFICIAL BAIT (NORBAIT™) AS A MEANS OF REDUCING THE INCIDENTAL CATCH OF MACROURUS AND OTHER BYCATCH SPECIES IN HIGH LATITUDE TOOTHFISH FISHERIES
Abstract: The New Zealand fishing company Sanford Limited has initiated a research project to ... assess the effectiveness of artificial bait as a means of reducing the incidental catch of Macrouridae ... (rattails) and other bycatch species in the toothfish autoline longline fishery. A company vessel carried ... out some initial experimental work in the western Ross Sea (CCAMLR Statistical Subarea 88.1) in 2007 ...
Meeting Document : WG-FSA-08/52 : Auteur(s): J.M. Fenaughty (New Zealand)
-
Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)
Abstract: The paper, based on the results of italian expeditions to the Ross Sea (December 1989 ... biomass and what is its value. The hydroacoustic observations were done in the time when investigated area ... December- January). The process of ice melting began in mid November, near Ross Ice Shelf (so called ... polynia area) and moved towards North. All the time daytime was prevaled. Krill in aggregations both below ...
Meeting Document : WG-EMM-97/53 : Auteur(s): Kalinowski, J., Azzali, M.
-
Report on scientific observations onboard the Chilean longliner, ‘Puerto Ballena’, in Statistical Subarea 48.3 from March to May 1996
Abstract: Scientific observation under the auspices of the CCAMLR Scheme of International ... Scientific Observatio was conducted onboard the Chilean longliner 'Puerto Ballena' fishing for ... Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 from March to May 1996. Details of the cruise ... D. eleginoides, the estimation of the finfish by-catch, the estimation of a conversion factor of ...
Meeting Document : WG-FSA-96/22 : Auteur(s): Selling, J., Kock, K.-H.
-
Variation of ice edge position in western part of Atlantic sector of the Antarctic
Abstract: Satellite imagery of the pack ice edge position in western part of the Atlantic sector ... of the Antarctic derived on each tenday period basis has been used to analyse its spatial and ... temporal variation in the area between 65° and 20°W. Amplitude of the seasonal variation of the ice edge ... position was found to increase from the west to the east. Described is two-year cyclicity of consecutive ...
Meeting Document : SC-CAMLR-VIII/BG/49 : Auteur(s): Delegation of USSR
-
Has Notothenia rossii around Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago?
Abstract: The marbled notothenia (Notothenia rossii) was the first species targeted by commercial ... fishing in the Southern Ocean. The species has been heavily fished around South Georgia and Iles Kerguelen ... in the first half of the 1970’s and at Elephant Island in 1979/80. The closure of the fishery for ... this species was one of the first conservation measures the ‘Commission for the Conservation of ...
Meeting Document : WG-FSA-12/19 : Auteur(s): K.-H. Kock (Germany) and C.D. Jones (USA)