Résultats de la recherche
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
the need for recovery of some species, although models have been proposed fos monitoring local ... discussed the need to estimate the relationships between predator survival and krill abundance. It is ... questions address a core issue for fisheries in deterlninii~g what aspects of an ecosystem need to be ... CCAMLR recognises that the predator criterion of 0.75 may need to be altered as more information on the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Auteur(s): Constable, A.J
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
occurred widely throughout large datasets. Hence, there is a need for the development and consistent ... abundance estimation or swarm structure analysis, then the effect of such inter- ference noise needs to be ... needs to be determined and applied to differentiate interference noise from ‘target’ echoes. As a ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Auteur(s): Wang, X., J. Zhang and X. Zhao
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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
population trends without the need for recourse to environmental change hypotheses. A model is developed ... interactions alone can broadly explain observed population trends without the need for recourse to ... (taken to cor- respond to a co-existence equilibrium level for the species considered), needs to be ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth
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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
to the need to build up a suffi ciently long time series on known-age birds from which to determine ... the CEMP context. Sensitivity analyses need to be carried out to determine the numbers of adults and ... 63 18 80 72 0 0. 38 19 99 / 00 37 31 18 36 99 0 0. 54 20 00 / 01 35 ... ye ar s 34 .3 4 7 ye ar s 31 .7 3 8 ye ar s 25 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Auteur(s): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
Paper Title: Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea Abstract / Description: Target strength (TS) of preserved (frozen and defrosted) Antarctic silverfish (Pleuragramma antarcticum) of total length (TL) from 110 to 202.5 mm were measured ex situ
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Auteur(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
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Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database
CCAMLR open and closed fishing periods that apply to Subarea 48.3 (open 1 May–31 August, closed 1 ... observed. However, there is a real need to inves- tigate the feasibility of combining remote-tracking and ... -tracking Westland petrels Procellaria westlandica. Mar. Ornithol., 25: 31–36. Freeman, A.N.D., K.-J ... South Atlantic. Ant. Sci., 4 (1): 31–36. Prince, P.A., J.P. Croxall, P.N. Trathan and A.G. Wood. 1998 ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
a ~ a n b 1 3 a ANOVA p~HAOMM'31.IPOBaHHblX ~ ~ O K O B , I I C n O ~ b 3 0 B ~ B I L l l I e C 5 ... , precision needs to be measured prior to any quantitiative validation test. This study provides estimates ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Auteur(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (CCAMLR Division 58.4.3b) based on fine-scale catch and effort data
grounds rep- resent 31% of the total fishable area (i.e. depth < 2 000 m) in the division. Anomalous or ... ) - 32 5 15 6 11 - - - 1 77 6 17 7 12 T O A (k g) - 7 07 2 31 0 86 7 ... or t D ay s fi sh ed - 18 56 - 36 31 14 1 T O A (n ) - - 2 89 9 ... all effort and 84% of all catches coming out of areas accounting for just 31% of fishable sea floor ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Auteur(s): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
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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
0. 36 0. 31 20 04 11 40 1 53 3 32 6 55 1 73 0 2. 7 17 .6 0. 29 0 ... . 38 20 05 23 59 1 29 2 32 2 52 2 81 1 4. 8 20 .3 0. 31 0. 48 20 06 ... months (Moore et al., 1999). Further work needs to be done to find out more about the movements of ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Auteur(s): Moir Clark, J. and D.J. Agnew
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Fish distribution and biomass in the Heard Island zone (Division 58.5.2)
respectively, but increased almost tenfold to 31 701 tonnes during spring 1993. Most of this increase was the ... such a fishery. REFERENCES Estimate 4584 3112 31701 2019 2766 2220 17716 3181 11 881 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Auteur(s): Williams, R. and W.K. de la Mare