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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
51 4 3 50 5 T ot al 29 4 03 30 4 25 30 4 67 30 4 61 % in cr ea se o ... declared catches on sets hav- ing those interaction types: 3 , , ,1 y l y y n y ll C T C e= = +å ... where T is the corrected total catch in year y for observed sets, Cy,n is the declared catch in year y ... then be calculated as T divided by the sum of the individual Cs. Noting that some high CPUE areas ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Автор(ы): Moir Clark, J. and D.J. Agnew
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Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric characteristic?
,12 = v = J,1 + aa a2 = ba (3) using the same methodology as described in the foregoing section ... is taken as an estimate of (J, and ~ is known. n;;:: 2( a /0)2 {t(X[v] + t2(1_P)[v]}2: see Sokal ... ba = k(1l + aa) substituting equation (3) bA = l+kaA substituting equation (4) (5) We can ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 259–272 : Автор(ы): Agnew, D.J.
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A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
VB parameter estimates obtained from the length-at-age data and the Fabens (1965) form of the VB ... DATA AND COMPARED TO OBSERVED GROWTH FROM MARK–RECAPTURE STUDIES S.G. Candy , A.J. Constable, T ... and the Fabens (1965) form of the VB growth model. Formulae for adjusting predictions for bias ... length-at-age data used to fi t the growth model. The fi rst subsample for length measurement is ... (1965) form of the VB growth model. Formulae for adjusting predictions for bias imparted by the use of ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Автор(ы): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
eXeroRHor0 BbIJIoBa, K O T O P ~ I ~ ~ OTBeYaeT T ~ ~ ~ O B ~ H M R M IlOnflepXaHMX YPOBHX Constable ... AonroBpeMeHHoe cocTomue sanaca B ~ ~ B H C M M O C T H OT ero npefi3~cnnya-~aqno~~oii ~ W O M ~ C C ~ I . A ... ~ H H ~ R MOAeJIb naeT BO3MOXHOCTb OqeHciTb BIlIlRHRe POCTa pa3HOrO Tkina, ~ C T ~ C T B ~ H H O ... HCnOJIb3yeT ~ A ~ I I T I * B H ~ I I % aJIrOpI?TM Tllna ' P y ~ r e - K y ~ ~ a ' A J I R BbIqI?CneHMR ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Автор(ы): Constable, A. and W.K. de la Mare
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Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish
. Collecting and analysing data to better CCAMLR Science, Vol. 19 (2012): 17–30 17 ESTIMATING UNACCOUNTED ... CCAMLR C2 (longline gear catch and effort database) report- ing form was modified for the 2008 fishing ... vessel on the C2 form). Webber and Parker 20 Results Data grooming The initial data grooming ... sections of longline gear, as required on the C2 form, is recommended, in particular, to report zero ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Автор(ы): Webber, D.N. and S.J. Parker
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
concentrations of myctophids as long bands or spots (isolated schools) with a height of up to 30 m (Figures 1 ... concentrations of myctophids in the form of elongated strips were found in the waters of the Frontal Zone ... 47° and 56°S and between 8° and 44°W in the period 30 January to 10 April. The bulk of the biomass ... surveyed in two stages. Firstly, the area from 51 °30' to 56°00'S and between 20°30' and 26°30'W was ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Автор(ы): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva
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A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)
penguins form the foci of other strands of Subgroup on Status and Trend Assessment of Predator ... digested that numbers and mass could not be determined. Nototheniidae (notably T. eulepidotus and P. ant ... 1994. Birds travelled for c. 30 days to areas of perennially consistent pack- ice in the eastern Ross ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Автор(ы): Ratcliffe, N. and P. Trathan
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Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption
(~Ba BH~a). 3TO HCCJle~OBaHHe HanpaBJleHO Ha aHaJlH3 COCTaBa nHIQH 3THX BH~OB B ~eJlSlx H3YlleHHSI HX ... a given time, t - time, A - constant. (1) From equation (1) it follows that the amount of food ... in a particular stomach varies according to the equation: S(t) = S (0) exp (-At) (2) where S (0 ... ) - amount of food at time t = O. 323 Equation (2) clearly shows that 90% of food is evacuated over a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Автор(ы): Pakhomov, Y.A. and V.B. Tseitlin
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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
data to be input as the total yearly frequency in the form of class proportions com- bined with the ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Автор(ы): Candy, S.G
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Beyond MSY: a consideration of definitions of management objectives
is greater that S t' the op spawning stock corresponding to this maximum, the objective of GNAI will ... be met by taking an amount R-S t' so that the escapement (i.e. recruitment op less catch) will ... maintained at S t' then catches op will vary. It can be argued that they are not being sustained, and that ... fishing on the natural rate of increase can be derived from the earlier equations in the form C = R ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Автор(ы): Gulland, J.A.
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