Résultats de la recherche
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Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and Shag Rocks (Southern Ocean) CCAMLR Subarea 48.3.
east of Shag Rocks and the west of South Georgia. Reliable biomass estimates were not possible due to ... recognisable cohort progression and a trend of increasing size over time indicating a potential recovery of the ... knowledge of L. squamifrons in this region will be valuable in future research on habitat and foodweb ... ) Title: Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and ...
Meeting Document : WG-FSA-12/34 : Auteur(s): S. Gregory, J. Brown and M. Belchier (United Kingdom)
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Vast assembly of vocal marine mammals from diverse species on fish spawning ground
information on prey distribution and abundance as well as distribution and activity of their top predators ... echoes used in the assessment of prey abundance and distribution. Periodically, only the receiver array ... methodology offer coverage of 10s of km and may thus inform about variability issues now causing troubles in ... the assessment of krill using conventional acoustic methods. Author(s): D. Wang, H. Garcia, W ...
Meeting Document : WG-EMM-16/P01 : Auteur(s): D. Wang, H. Garcia, W. Huang, D.D. Tran, A.D. Jain, D.H. Yi, Z. Gong, J.M. Jech, O.R. Godø, N.C. Makris and P. Ratilal
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Estimation of tag-loss rates for tagged fish in the Patagonian toothfish (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands in Division 58.5.2
fish. With an initial tag-loss proportion of 2.8% and ongoing tag-loss rate of 0.056 in the longline ... fishery, 99.3% of all double-tagged fish retain at least one tag after one year, and 80.2% after ten years ... . The parameter of annual tag-loss rate in CASAL’s single-tag model was approximated, for a maximum time ... at liberty of 6 years, as l = 0.014 for longline and l = 0.007 for trawl. However, this single tag ...
Meeting Document : WG-FSA-17/21 : Auteur(s): P. Ziegler
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Implementation of the modified Petersen mark–recapture method in S-Plus
Abstract: The mark-recapture method of estimating toothfish population size described last year ... , which uses a modification of the Petersen estimator to take account of mortality and selectivity, is ... : Implementation of the modified Petersen mark–recapture method in S-Plus Approval: Approved ...
Meeting Document : WG-FSA-SAM-05/7 : Auteur(s): A. Payne, D.J. Agnew and R. Hillary (United Kingdom)
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Review of the CEMP standard methods and their delivery to the CEMP database
-EMM to continue review of the CEMP Standard Methods and their delivery to the CEMP database. The ... discussions were diverse in covering a wide range of parameters, methods and issues, but in the limited time ... available it was not possible to discuss all aspects of CEMP. The issues considered are presented under ... broad themes with some historical background to the development of those themes provided as context ...
Meeting Document : WG-EMM-04/70 : Auteur(s): C. Southwell, J. Clarke (Australia), K. Reid (United Kingdom), G. Watters (USA) and D. Ramm (CCAMLR Secretariat)
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Information on the spawning season and gonadosomatic indices of Dissostichus mawsoni from Subarea 88.1 in the 2001/02 season
Abstract: Data on maturity, gonadosomatic index (GSI) and length/weight of Antarctic toothfish ... longline vessels Janas and San Aotea II operating in the Exploratory Fishery. The onset of the spawning ... season was identified as late autumn (May). A significant difference in the condition of fish between ... summer and autumn was noted, and this may be a result of migration f or spawning. The maximum GSI ...
Meeting Document : WG-FSA-02/31 : Auteur(s): G.J. Patchell (New Zealand)
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Status of the FIBEX acoustic data from the west Atlantic
to check the consistency of krill abundance estimates derived from different survey vessels. There is ... a good level of consistency between the results from four of the vessels, Itzumi, Dr Eduardo L ... Holmberg, Odysee and Walther Herwig. While there is an error factor due to the combination of data ... : Status of the FIBEX acoustic data from the west Atlantic Approval: Approved ...
Meeting Document : WG-KRILL-93/31 : Auteur(s): P.N. Trathan and I. Everson (United Kingdom)
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An updated information of the Japanese krill fishery in the Antarctic
Abstract: Annual summary of Japanese krill fishery in the Antarctic was updated with delineation ... of two different type of operation. Operated areas in 1983/84 and 1984/85 seasons were illustrated ... updated information of the Japanese krill fishery in the Antarctic Approval: Approved ...
Meeting Document : WS-KCPUE-85/05 : Auteur(s): Y. Shimadzu (Japan)
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Does the current South Georgia groundfish survey accurately estimate the standing stock of mackerel icefish?
bottom trawl survey, but evidence from predators and acoustics indicates that a considerable portion of ... short acoustic survey on FPRV Dorada showed that mackerel icefish, of all age classes, spend time in ... acoustic survey has the potential to give a better estimate of icefish biomass, however acoustic methods ... of icefish. Author(s): Agnew, D., Goss, C., Xavier, J., Belchier, M., Collins, M., Reid, K. Title ...
Meeting Document : WG-FSA-SAM-04/20 : Auteur(s): Agnew, D., Goss, C., Xavier, J., Belchier, M., Collins, M., Reid, K.
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Bycatch of skates (Rajiformes) and grenadiers (Macrouridae) in longline fisheries in Subarea 48.3
Abstract: This paper investigates factors affecting the bycatch of skates (Rajiformes) and ... to the sea bed and type of bait used. The areas of greatest catch rates differed by area and depth ... range. During the period 1996–1999 skate bycatch was higher in February-March, while that of grenadiers ... . Ellis and R. Scott (United Kingdom) Title: Bycatch of skates (Rajiformes) and grenadiers (Macrouridae ...
Meeting Document : WG-FSA-14/47 Rev. 1 : Auteur(s): V. Laptikhovsky, M. Soeffker, M. Belchier, J. Roberts, C. Darby, J. Ellis and R. Scott (United Kingdom)