Résultats de la recherche
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Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia
24 years. This is very close to the maximum age of 22.8 years calculated from Taylor's formulae ... AND METHODS Age 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2 1 22 23 ... soaked for one week in a solution of 20% alcohol (96"), 5% glycerin, a few drops of domestic detergent ... not be validated because the samples had not been continuously collected over the year and also ... represents one year of life. Counting such annuli is a valid technique for determining the age of Antarctic ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Auteur(s): Cassia, M.C
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A hybrid approach to acoustic classification and length estimation of krill
animal measurement. For small school- ing organisms, such as euphausiids, this criterion is seldom met ... estimated confi dently in the interval (amin – amax) where 100|δ| < 20%, for a given dΔ. The mean length ... highly ‘tuned’ (error < 20%) to measur- ing sizes within the class from a = 1.6 to 6.0 mm. If N ... ) = binomial coeffi cient). These estimates can be com- bined and estimation of the mean animal size that ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Auteur(s): Azzali, M., I. Leonori and G. Lanciani
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Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program
simulation for two forms of alternative hypothesis with data series of up to 20 and 30 years. In both forms ... increase from 10- to 20-year time series resulted in little change in the median performance but in a ... replicates. Smoothing occurred in less than 50% of replicates in some of the 20-year time series for which ... year, even though different sets of parameters may contribute to the indices in different years ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 101–117 : Auteur(s): de la Mare, W.K. and A.J. Constable
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Acoustic data analysis and models of krill spatial distribution
wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales smaller than 1 km the ... spectrum resembles a white noise at scales of 2-20 km, although at scales smaller than 1 .km the spectrum ... spectre a ondes ressemble a un son blanc aux echelles de 2 a 20 km, mais aux echelles inferieures a 1 km ... KPHJI$l. B .l{Hana30He 2-20 KM cneKTp BOJIHOBbIX q,flceJI HanOMHHaeT OeJIbIM llIYM, XOT$l B .l ... . A escalas de 2-20 km, el espectro del numero de ondas se parece a un ruido blanco, aunque a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Auteur(s): Morin, A., A. Okubo and K. Kawasaki
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A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
70°S from December to May for all years and all vessels. Month G S I ( % ) 0 5 10 15 20 25 ... occurred repeatedly (although not necessarily every year) throughout their life cycle. Eastman and De ... small 20' latitude by 20' longitude cell was calculated. These median lengths were then grouped into ... Dec Jan Feb Mar Apr May (a) Males (North) Month G S I ( % ) 0 5 10 15 20 25 Dec Jan Feb ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Auteur(s): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
), as a function of the fraction of the biomass estimate which is set as the catch for a 20-year period ... biomass estimate which is set as the catch for a 20-year period. Three possible fishing seasons are ... pre-exploitation level ( P ) 1992). over a 20-year harvesting period. The resul t s which they ... drawn at random from pre-specified distributions for each simulation of a 20-year period of harvesting ... ) requested that statistics be provided for a 10- as well as a 20-year period of harvesting. Calculations ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Auteur(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill
CVs of 10%, 20% and 30% were added to the recruitment vectors, the proportion of recruitment vectors ... ), so a high-abundance year with 20% recruitment would produce twice the recruits as a low-abundance ... on P ro po rti on P ro po rti on P ro po rti on P ro po rti on 20 30 ... 40 50 60 20 30 40 50 60 20 30 ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Auteur(s): Kinzey, D., G. Watters and C.S. Reiss
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Additional data on anti-Brucella antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
Medicina Preventiva Animal Facultad de Ciencias Veterinarias y Pecuarias Universidad de Chile Casilla ... the southernmost breeding populations of A. gazelln, with a current population size of 20 139 ... antibodies in A.rcfoceplzalus gazella. * - dead animal; RB - Rose Bengal test; COMPELISAB - Competitive ... ranging from 30% I to 100% I were considered positives; and Competitive Enzymoimmunoassay 'COMPE ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 147–154 : Auteur(s): Blank, O., P. Retamal, P. Abalos and D. Torres
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Species identification and age estimation for the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
, living to at least 50 years. Females grow at a faster rate, and reach a larger size, than males, but both ... be from 12 to 14 years. File: 03marriott-etal.pdf ... 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 Age (years) To ta l l en gt h ... . holotrachys Species identifi cation and age estimation for M. whitsoni 44 Marriott et al. 0 10 20 30 ... linear regressions. Males y = 0.3287x + 0.511 R2 = 0.865 n = 552 0 10 20 30 40 0 20 40 60 80 100 ... ) Females y = 0.3917x - 1.9855 R2 = 0.923 n = 900 0 10 20 30 40 0 20 40 60 80 100 Total length (cm ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 37–51 : Auteur(s): Marriott, P., P.L. Horn and P. McMillan
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Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
South Orkneys Abstract / Description: A set of concentric zones of 20 km width was defined around ... in all years 1988 to 1991. In 1987, 1988 and 1991, 75% of the catch in Subarea 48.2 between December ... , foraging ranges and population sizes from the literature are used to show that for some years catches ... / '-".I i \,\\1 V £20..J ,Jl) /' 500 tr ( '10 ~O ·w '30 llw" , I ~ t;J , G3 -L/ ( If 1 ... for Subareas 48.1 and 48.2. 100 90 80 .c. 70 J:! tfJ 0 () 50 -0 40 a-e 30 20 10 ... - - - 1989 () 50 '0 • ,- 40 I / ~ I _J -. - - 1990 30 . . I tI --20 tI /' 1991 tI /' /' la ... was similar for each of the years examined whereas that for Subarea 48.2 changed each year (Figures 3 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Auteur(s): Agnew, D.J.