Résultats de la recherche
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA) Title: Among-year variation in growth of ... Southern Ocean over a span of 19 yr to document among-year variation in krill growth during the austral ... estimates of among-year variation in krill growth. We estimate very high among-year variation in growth ... (annual estimates for a 30 mm krill in the Elephant Island region ranged from 0.00 to0.17 mm d −1; mean ...
Meeting Document : WG-EMM-13/P01 : Auteur(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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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 ... : Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish ... indicated that mean estimates of vulnerable biomass for D. mawsoni were similar across recapture years 2010 ...
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
interestingly, the magnitudes of abundance and between-year gradients of change of abundance at each site were ... both SG and El. There was no apparent lag in changes in abundance at each site, and ranked between-year ... South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia ... mirrored by those at the other location; for example, 1991 and 1994 were years of very low krill density at ...
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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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 ... survey estimates with the observed pattern of within-year variability showed that some of the alleged ... ‘year-to-year’ variation could be attributed just to sampling at different dates of year. However, there ...
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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An 8-year cycle in krill biomass density inferred from acoustic surveys conducted in the vicinity of the South Shetland Islands during the austral summers of 1991/1992 through 2001/2002
fit to the biomass density time series is dominated by an 8-year cycle and predicts an increase in ... ): R.P. Hewitt, D.A. Demer and J.H. Emery (USA) Title: An 8-year cycle in krill biomass density inferred ... years and indications that ice cover in the winter of 2002 is seasonally early and extensive. Author(s ...
Meeting Document : WG-EMM-03/6 : Auteur(s): R.P. Hewitt, D.A. Demer and J.H. Emery (USA)
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ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
DATA FROM A FOUR-YEAR TAGGING EXPERIMENT Approval: Approved ... some years; 6. Analysis of tagging and biometric data suggests that D. eleginoides at 48.4 have similar ... yield calculated according to CCAMLR decision rules is 47 tonnes. Author(s): J. Roberts and D.J. Agnew ...
Meeting Document : WG-FSA-09/17 : Auteur(s): J. Roberts and D.J. Agnew (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
strata by incorporating ‘Stratum’ as a fixed effect term and the Stratum-by-Year interaction (S x Y) as a ... CPUE in the second year of the fishery with a sharp decline in the following year followed by a ... estimates for Stratum-by-Year is small. For the trawl catch and effort data it was found that considering ... -by-year effects: trawl fishery for Dissostichus eleginoides in CAMLR Area 58.5.2 Approval: Approved ...
Meeting Document : WG-FSA-03/34 : Auteur(s): S.G. Candy (Australia)
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Preparing for the Year of the Skate: proposed information collection and tagging protocol for skates
-SAM paragraph 8.10) a review of data requirements and a “Year of the Skate” for 2008–09 whereby data ... collection effort on bycatch will be concentrated on skate species in that year in order to inform a full ... the “Year of the Skate”. Note that we do not consider other information requirements such as ... . O’Driscoll and N. Smith (New Zealand) Title: Preparing for the Year of the Skate: proposed information ...
Meeting Document : WG-FSA-07/39 : Auteur(s): S. Mormede, A. Dunn, J. Fenaughty, M. Francis, S. Hanchet, R. O’Driscoll and N. Smith (New Zealand)
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YEAR OF THE SKATE SAMPLING PROTOCOL: LEARNING FROM THE 2007–08 SEASON SAMPLING PROTOCOL ON NZ VESSELS
): S. Mormede (New Zealand) Title: YEAR OF THE SKATE SAMPLING PROTOCOL: LEARNING FROM THE 2007–08 ... paragraph 8.10) a review of data requirements and a “Year of the Skate” for 2008–09 whereby data collection ... effort on bycatch will be concentrated on skate species in that year in order to inform a full skate ... modifications to data collection systems that are required in 2008–09, for the “Year of the Skate”. Note that we ...
Meeting Document : WG-FSA-08/49 : Auteur(s): S. Mormede (New Zealand)
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USSR Catches, Split-Year 1969/70
Author(s): Secretariat Title: USSR Catches, Split-Year 1969/70 Approval: Approved ...
Meeting Document : WG-FSA-85/10 : Auteur(s): Secretariat