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An iterative model to construct an age/length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
Paper Title: An iterative model to construct an age/length key to assess the age composition of a ... could be biased. By using an iteration algorithm it is possible to overcome this limitation. The age ... composition of catch for Dissostichus eleginoides was obtained with the application of a single age/length key ... new fishery for Dissostichus eleginoides in Chilean waters Abstract / Description: Traditional ... could be biased. By using an iteration algorithm it is possible to overcome this limitation. The age ... composition of catch for Dissostichus eZeginoides was obtained with the application of a single age/length ... key method for estimating age composition from length composition. Bull. Japan Sea Natl. Fish. Res ... , D. and S. CHIKUNI. 1987. Mixtures of empirical distributions: an iterative application ofthe age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 11–20 : Автор(ы): Robotham, V. H. and Z. Young U.
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Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study
animal count data to a common reference point of breeding chronology for species with a complex temporal ... final adjusted estimates. Adjustment for availability bias is achieved by applying an adjustment factor ... Paper Title: Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a ... IntegratIng Count effort by SeaSonally CorreCtIng anImal PoPulatIon eStImateS (ICeSCaPe): a method for ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... through to the final adjusted estimates. Adjustment for availability bias is achieved by applying an ... for estimating abundance and its uncertainty from count data Introduction Counts of animal ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Автор(ы): McKinlay, J., C. Southwell and R. Trebilco
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Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
passing through the mesh of the codend Abstract / Description: This paper contains advice on determining ... mesh selectivity factors for trawl codends using a special liner. The design and technical ... specifications of the liner are described. It also describes an experiment to determine the accidental mortality ... of fish passing through the trawl codend. It contains proposals on standardising data collection and ... H3MepeHHR, MM 30-80 90-1 BHYTpeHHHH pa3Mep R~eH onpe~enRIDT nocne Ka~oro 3a~eT Horo TpaneHHR, He n03~Hee ... also describes an experiment to determine the accidental mortality of fish passing through the trawl ... 3 13 23 4 14 24 5 15 25 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 - 114 - ___ .n ... ON NET SELECTIVITY AND ACCIDENTAL MORTALITY OF FISH PASSING THROUGH THE MESH OF THE COD END VNIRO ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 99-121 : Автор(ы): VNIRO (USSR)
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Problems of population age structure determination of Euphausia superba Dana using an example from the Antarctic Peninsula area and adjacent waters
Paper Title: Problems of population age structure determination of Euphausia superba Dana using ... an example from the Antarctic Peninsula area and adjacent waters Abstract / Description: This paper ... examines the size structure of populations of E. superba in relation to their habitat, on the basis of an ... correspond to age groups. It is shown that the size groups of krill are not a seasonal phenomenon, but ... abiotic factors. Possibilities are outlined for the elucidation of the problem of the age and size ... - 227 - SC-CAMLR-V/BG/39 PROBLEMS OF POPULATION AGE ... STRUCTURE DETERMINATION OF EUPHAUSIA SUPERBA DANA USING AN EXAMPLE FROM THE ANTARCTIC PENINSULA AREA AND ... populations of E. superba in relation to their habitat, on the basis of an analysis of data collected by the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 227-270 : Автор(ы): Spiridonov, V.A.
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1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 (South Georgia)
Paper Title: 1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 ... (South Georgia) Abstract / Description: The 1989/90 stock status and TAC assessment for Champsocephalus ... ) using standardized fishing effort. For the beginning of the 1989/90 fishing season, the stock was ... gunnari in South Georgia Subarea (48.3) has been made using the biostatistic material for 1982/83 to 1987 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 15–27 : Автор(ы): Frolkina, Zh.A. and P. Gasyukov
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Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
rockhopper penguins, Marion Island, 1979/80–1995/96 Abstract / Description: At sub-Antarctic Marion Island ... , annual breeding success of macaroni (Eudyptes chrysolophus) between 1979/80 and 1995/96 and rockhopper ... penguins (E. chrysocome) between 1985/86 and 1995/96 was measured. For macaroni penguins, averages of 0.48 ... eggs and 0.35 chicks were hatched and fledged respectively for each clutch laid. Corresponding averages ... the 1979/80 summer season for macaroni penguins and the 1983/84 season for rockhopper penguins ... /90. The lowest survival of chicks was 29% at Macaroni Bay in 1989/90. The overall mean value for ... success of macaroni (Et~dyptes cl~rysoloplztis) between 1979/80 and 1995/96 and rockhopper penguins (E ... . chrysocome) between 1985/86 and 1995/96 was measured. For macaroni penguins, averages of 0.48 eggs and 0.35 ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Автор(ы): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford
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Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR Science, 11: 59–80 (2004)
Science, 11: 59–80 (2004) File: 12candy-erratum.pdf ... models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR ... effects. CCAMLR Science, 11: 59–80. R Development Core Team. 2006. R: A language and Environment for ... EffEcts And rAndoM strAtuM-by-yEAr EffEcts CCAMLR Science, 11: 59–80 (2004) S.G. Candy Department ... Erratum For the GLMM the ‘effective degrees of ... ) used to fit the GLMM imple- ments the correct formula for r. Addendum The extended quasi-deviance ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 221–222 : Автор(ы): Candy, S.G
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Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea
Paper Title: Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana ... georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... , after which growth almost ceases (Francis and Ó Maolagáin, 2005). An alternative interpretation of age ... been generated that suggest much slower growth, greater ages-at-maturity (about 20 years compared with ... underestimated Estimated age (years) 0 10 20 30 40 P el vi c le ng th (c m ) 0 20 40 60 80 100 ... cessa- tion of growth. They estimated the age-at-sexual- maturity to be 6–7 years for males and 8–11 ... years for females, and their maximum observed age was 14 years. However, no ageing validation study ... an assessment of between-reader variability. The revised age and growth estimates for this species ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Автор(ы): Francis, M.P. and M.J. Gallagher
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.
obtained by integrating an ordinary differential equation (ODE) for within-year population dynamics. The ... process error in predicted catch-at-age numbers. Simulations assumed 1 000 releases per year over 12 years ... new mortality equation. Abstract / Description: An estimation strategy for natural mortality, M ... , using multiple cohorts and multiple years of catch-at-age and aged mark-recapture data was tested using ... time. The initial age structure at the first year of fishing and for subsequent years is obtained by ... ) model) uses an ODE with constant within-year catch per unit time for each age class, and as a result ... of the population size for each age class and year of fishing. Allowing an adequate time for mixing ... = t0, then the starting numbers-at-age for the pop- ulation { }0 0 0,1 ,,...,=t t t AN N N must be ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Автор(ы): Candy, S.G.
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
obtained using proportions-at-length and fishery- and year-specific age–length keys (ALKs) for years 1998 ... trawl ground at HIMI were used to estimate M. Catch and releases by age class for this fishery were ... directly from the estimates of population numbers-at-age. The properties of these two models for estimation ... in R, based on alternative ordinary differential equations (ODE) for within-year population dynamics ... fishery- and year-specific age–length keys (ALKs) for years 1998 to 2008. A large proportion of the ... age frequencies within each fishing year. For an M of 0.155, the expected number of recaptures fitted ... proportions-at-age for the main trawl ground for season 2 (1 May–30 September) and season 3 (1 October–30 ... -age proportions observed and fitted by CASAL for Ground B in (a) season 2 (1 May–30 September) and ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Автор(ы): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins
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