Search results
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An assessment of toothfish in Subarea 48.3 using CASAL
, lasted from 1 May to 31 August. The remainder of the year (1 September to 30 November) constituted ... have presumably yielded inconsistencies, if there were any issues with the mixing of the tagged ... . The issue of how to introduce stochasticity into such models is also touched on, with respect to natural ... . This raised the issue of a potential cryptic biomass never seen in the catches, and of selecting immature ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Author(s): Hillary, R.M., G.P. Kirkwood and D.J. Agnew
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CCAMLR ecosystem monitoring and management: future work
that may arise if all of the catch was taken from only a small area (SC-CAMLR, 2000). This issue ... et al., 2000), Mangel and Switzer (1998) and Constable (2001) – although such modelling was also ... on the major species (see Yodzis, 2001 for review). Scales of Monitoring and Management for a Krill Fishery ... The issue of scales of interactions of different species with each other, with the environment and with fi ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Author(s): Constable, A.J
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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
to August 2009 for Grounds B and C were 8 284 and 3 416 respectively, with trawl responsible for 2 158 ... the estimate of σC reached its upper bound of 2.0. The estimated value of F for 2001 and 2008 reached its ... that most of the catch is predicted to be taken in 2001, indicate that predic- tions from the BODE model ... high degree of certainty. The issue of tag-mortality rate is difficult to resolve, since ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Author(s): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
. The periods used were March/April, May/June and July/August. The only exception to this was that, due ... to the closure of the fishery, there were no data for August 1996; this category therefore only contains data ... Male MaylJune 1997 Male JulylAugust 60 70 80 90 100 110 120 130 Length (cm) Figure ... number of data points which fall in the middle of the curve. (This point was highlighted as a warning ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Author(s): Everson, I. and A.W. Murray
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
has been published (Appleyard et al., 2001; Smith et al., 2001; Smith and McVeagh, 2000) which ... on a more local scale are less well defi ned; Appleyard et al. (2001) found very few genetic differences ... , k = 0.029 year-1, t0 = -2.56; data from SC-CAMLR, 2001). The tagged fi sh then grow each day according ... and M = 0.16 (SC-CAMLR, 2001). As tagged fi sh are released in a group, they may not immediately mix ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Author(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
vessels fi shing within Subarea 48.3 between June and August 2001. Specimens were frozen ... ., 2001), and discarded by- catch fi sh are known to be taken by black-browed and grey-headed albatrosses ... , M. Lewis and R.W. Williams. 2001. Trophic interactions between the Patagonian toothfi sh, its fi shery ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Author(s): Morley, S. and M. Belchier
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
period. CPD showed an increase from November to February, and stayed constant until August ... from August onwards. In Subarea 48.3, predicted values were constant from April to September ... in Figure 7 from September to October in Subarea 48.1 and August to October in Subarea 48.2, since ... (≈150–180 kg/min) until the 2000/01 season, and decreased slightly during the 2001/02 and 2002/03 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Author(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
l'issue d'une période de 18 à 24 mois, l'emplacement des larves de légine correspond moyennement à la ... ., 2003), diet (Fenaughty et al., 2003) and, to a lesser extent, reproduction (e.g. Patchell, 2001, 2002 ... fish are resting or maturing while the fishery takes place (Patchell, 2001, 2002). Since 2002/03 ... a winter–spring spawn- ing time with a peak in July/August would sug- gest an egg development time ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Author(s): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams
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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
abundance. Punt et al. (2001) investigated mean length and the upper 5th percentiles of length (and weight ... (variable rec) Individual trial specifications Reference year 2000 First year of projection 2001 ... al., 2001; Somerton and Kobayashi, 1991; Cope and Punt, 2009). The simulation results presented ... , although issues with regards to ageing errors of otoliths and the representativeness of samples re- main ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
fishing activities in waters around the island of South Georgia on 24 August 2013 (Figure 3). Typical ... obtained by applying the ‘school detection’ module (Higginbottom et al., 2008; Diner, 2001) to the 120 ... . ICES J. Mar. Sci., 60 (3): 625–635. Diner, N. 2001. Correction on school geometry and density ... around South Georgia on 24 August 2013. ‐38.5 ‐38.0 ‐37.5 ‐37.0 ‐36.5 ‐36.0 ‐35.5‐55.0 ‐54.5 ‐54.0 ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao