Résultats de la recherche
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Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish (Dissostichus mawsoni) in Southern Area of Statistical Subarea 48.4
Abstract: A three-year tagging experiment was initiated by the UK in 2008/09 fishing season with ... decline in catch rates over the three year study, more so between 2010 and 2011. A total of 476 D. mawsoni ... mawsoni) in South of Statistical Subarea 48.4. This paper presents the results for D. mawsoni. Fishing ... vessel between 2008/09 and 2009/10, but the spatial coverage of fishing effort was reduced in 2010/11 due ...
Meeting Document : WG-FSA-11/31 Rev. 2 : Auteur(s): R.C. Wakeford, J. Roberts and R.E. Mitchell (United Kingdom)
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Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea
both SG and El. There was no apparent lag in changes in abundance at each site, and ranked between-year ... Abstract: Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... interestingly, the magnitudes of abundance and between-year gradients of change of abundance at each site were ...
Meeting Document : WS-AREA 48-98/11 : Auteur(s): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)
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ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
Abstract: 1. The bycatch TAC of 12 tonnes of macrourids was reached in 2008/09 triggering the ... in 2008/09, slightly under the target of 375 for the full 75 tonnes of catch; 3. There were 29 D ... . eleginoides tag returns in 2008/09, bringing the total from all seasons up to 54 tag recaptures; 4. A total of ... 12 D. mawsoni and 269 rajids were tagged in all seasons combined though none were recaptured; 5 ...
Meeting Document : WG-FSA-09/17 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)
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Intra-annual variability in the abundance of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ krill density estimates
winter were predominantly low (mean = 18.7 g m-2 SD 24.3) but rose substantially by summer in each year ... . within-year) could have led to the perceived between-year variation from previous summer surveys in the ... pattern in krill abundance was detected that recurred consistently over all 3 years. Krill densities in ... statistically different (P>0.05) from estimates derived from standard ship-based krill surveys in adjacent ...
Meeting Document : WG-EMM-06/25 : Auteur(s): R.A. Saunders, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein, D.G. Bone and A.S. Brierley (United Kingdom)
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Modelling catch and effort data using generalised linear models with random cruise and stratum-by-year effects: trawl fishery for Dissostichus eleginoides in CAMLR Area 58.5.2
CPUE in the second year of the fishery with a sharp decline in the following year followed by a ... -by-year effects: trawl fishery for Dissostichus eleginoides in CAMLR Area 58.5.2 Approval: Approved ... parameter values was presented in WG-FSA-SAM 03-12 using Dissostichus eleginoides in Subarea 48.3 of the ... CAMLR area as an example dataset. Further development of these procedures is presented in this report ...
Meeting Document : WG-FSA-03/34 : Auteur(s): S.G. Candy (Australia)
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Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year
aggregations in the South Georgia area during different seasons of the year Approval: Approved ... Abstract: In wintering period icefish do not form aggregations, is feeding inactively and ... disperse at the depths more than 250 m within rather narrow temperature range (1.6-1,7ºC). In this period ... the water temperature is a limiting factor restricting fish distribution. In spring-summer icefish are ...
Meeting Document : WG-FSA-05/76 : Auteur(s): Zh.A. Frolkina (Russia)
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Relationship between distribution of Antarctic krill (Euphausia superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year
superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year Approval: Approved ... subject since the British Discovery Reports. However, there was no remarkable achievement in particular ... Database. We here focus mean-field (climatologic analysis) in all season. First, we have examined fishing ... occurred in water shallower than 200 m. Furthermore, horizontal distribution of krill fishing points ...
Meeting Document : WG-EMM-08/32 : Auteur(s): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)
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Notification for multi-year research in Subarea 48.5
Abstract: Notification for multi-year research in Subarea 48.5. Author(s): Delegation of Russia ... Title: Notification for multi-year research in Subarea 48.5 Approval: Approved ...
Meeting Document : WG-SAM-13/07 : Auteur(s): Delegation of Russia
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Notification for multi-year research in Subarea 48.5
Abstract: Notification for multi-year research in Subarea 48.5. Author(s): Submitted on behalf ... of Russia Title: Notification for multi-year research in Subarea 48.5 Approval: Approved ...
Meeting Document : WG-SAM-12/11 : Auteur(s): Submitted on behalf of Russia
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Correction for Under-representation of 1 and 2 Year Old Champsocephalus gunnari in Bottom Trawl Surveys
-representation of 1 and 2 Year Old Champsocephalus gunnari in Bottom Trawl Surveys Approval: Approved ...
Meeting Document : WG-FSA-89/27 : Auteur(s): J. Beddington and M. Basson (United Kingdom)