Search results
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Preliminary assessment of Patagonian toothfish in Subarea 48.3
and to catch at age observations and achieves this by assuming a different selection pattern ... the catch at age data. MCMC diagnostics and trace plot indicate poorer results than for previous assessments ... at age observations and achieves this by assuming a different selection pattern for the intermediate ... the catch at age data. MCMC diagnostics and trace plot indicate poorer results than for previous ...
Meeting Document : WG-FSA-13/30 : Author(s): R. Scott (United Kingdom)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... –B), using revised catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference ... We provide an update of the Bayesian sex and age structured population stock assessment model ... catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference model resulted ...
Meeting Document : WG-FSA-07/37 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Shedding new light on the life cycle of mackerel icefish in the Southern Ocean
in the north mature one year earlier than in the south. They have a much shorter life span and die after ... one year earlier than in the south. They have a much shorter life span and die after they have spawned ...
Meeting Document : WG-EMM-03/4 : Author(s): K.-H. Kock (Germany) and I. Everson (United Kingdom)
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On the status of mesopelagic fish (myctophidae) in the Southern Ocean ecosystem
is presented, based on general patterns of energy transformation from one trophic level to the next. Author ... is presented, based on general patterns of energy transformation from one trophic level to the next. ... birds and mammals). The large deepwater squid Mesonychoteuthis hamiltoni each year consumes ... birds and mammals). The large deepwater squid Mesonychoteuthis hamiltoni each year consumes ...
Meeting Document : WG-FSA-93/17 : Author(s): A.N. Kozlov (Russia)
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
patterns, which are compatible with existing information on the distributions from surveys. "Two-level ... are then located at random within the survey area. These "two-level" models provide an encouraging ... , which are compatible with existing information on the distributions from surveys. "Two-level" models ... at random within the survey area. These "two-level" models provide an encouraging improvement in fits ...
Meeting Document : WG-KRILL-91/21 : Author(s): D.S. Butterworth, D.L. Borchers and D.G.M. Miller (South Africa)
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Krill caught by predators and nets revisited: interpreting prey selection in proper temporal–spatial scales
and predator diet sampling. Comparisons of these two methods show broadly coherent results but also frequently ... for the two data sets are approximated as close as possible we found no difference in krill length frequency ... and predator diet sampling. Comparisons of these two methods show broadly coherent results but also frequently ... for the two data sets are approximated as close as possible we found no difference in krill length frequency ...
Meeting Document : WG-EMM-04/49 : Author(s): M.E. Goebel, V. Loeb, D.P. Costa, S.N. Sexton, A.R. Banks, J.D. Lipsky and A.C. Allen (USA)
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Representative length and age distributions from random stratified demersal fish surveys
as an example. Author(s): G. Parkes (United Kingdom) Title: Representative length and age distributions from ... Representative length and age distributions from random stratified demersal fish surveys ... Abstract: Two similar methods for preparing aggregate length frequency distributions from survey ... Two similar methods for preparing aggregate length frequency distributions from survey data ...
Meeting Document : WG-FSA-91/19 : Author(s): G. Parkes (United Kingdom)
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Champsocephalus gunnari Lönnberg distribution on South Georgia shelf from inventory survey data collected by AtlantNIRO
shelf. Ch.gunnari distribution pattern markedly varied by year which can be attributed to differing ... and north-eastern parts of the island shelf. Near Shag Rocks they could be seen in separate years. Year ... -to-year fluctuations of catch per unit effort, predominance of certain groups of specimens and mean weight ... . Ch.gunnari distribution pattern markedly varied by year which can be attributed to differing survey dates ...
Meeting Document : WG-FSA-92/04 : Author(s): I.A. Trunov (Russia)
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A Petersen tag-recapture preliminary population assessment of Antarctic toothfish in CCAMLR Subarea 48.4 based on data for the 2009–2014 fishing seasons
tagging returns to be 1,027 tonnes during the 2013/14 season. In previous years the harvest rate used ... returns to be 1,027 tonnes during the 2013/14 season. In previous years the harvest rate used ...
Meeting Document : WG-FSA-14/30 Rev. 1 : Author(s): V. Laptikhovsky, R. Scott, M. Söffker, T. Earl and C. Darby (United Kingdom)
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Acoustic estimates of krill biomass in the Elephant Island area: 1981-1993
Abstract: Acoustic estimates of krill biomass in the vicinity of Elephant Island for the years ... from 2.5 g/m2 to 134.5 g/m2 Average biomass and average areal density over the 13-year period was 1,692 ... Acoustic estimates of krill biomass in the vicinity of Elephant Island for the years 1981-1993 ... Average biomass and average areal density over the 13-year period was 1,692 xl03 t and 52.8 g/m2. ...
Meeting Document : WG-KRILL-93/49 : Author(s): D.A. Demer and R.P. Hewitt (USA)