Résultats de la recherche

1. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

   : (i) species interaction effects alone can explain observed predator abundance trends, though not ... for investigation. Amongst the key inferences of the study are that: (i) species interaction effects ... –krill interaction model introduced in Mori and Butterworth (2004) in various ways, as detailed in the ... taken between 1973 and 2001 (Miller, 2002). The fishery has been stable for the past nine years with ... the catch in 2002 being 98 414 tonnes (SC-CAMLR, 2001). This level is not considered excessive ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth

2. Quantifying movement behaviour of vessels in the Antarctic krill fishery

   distinct pattern. Mean between-haul distances were generally longer when catch levels fell below 10 tonnes ... distances were generally longer when catch levels fell below 10 tonnes/haul, and the travel distance ... étaient généralement plus grandes lorsque le niveau de capture tombait en dessous de 10 tonnes/trait, et ... расстояние между выборками было в целом больше, когда уровни вылова падали ниже 10 т/выборку, а пройденное ... los datos en escala fina de lance por lance de 10 años recientes. El análisis de la distancia entre ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Auteur(s): Kawaguchi, S. and S.G. Candy

3. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   formulation of Constable’s (2001) multi-species model in Hill et al. (2006). It is modified to include ... Constable (2001), and harvesting and movement are represented with additive loss or gain terms. Hill ... 10K = standard deviation 4,1 0.27 10K = ´ 4 ,2 0.18 10K = ´ Stable biomass factor ... 1 000]T AUmax = [200 200]T State bounds Xmin = [1 300 1 300 10 10]T Xmax = [104 104 100 100 ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Auteur(s): Hill, S.L. and M. Cannon

4. The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model

   productivity, health, resilience and services. These objectives are also consistent with CCAMLR’s con ... , including one each for krill (productivity) and fishery performance (services) and two (health and ... Vectors 10 15 4 2 1200 Krill – general Vectors 2 18 1 36 Krill – seasonal Vectors 4 18 1 2 144 Catch ... abundance at beginning of fishing period. Krill Whole model Health (II.3(b) maintenance of the ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Auteur(s): Hill, S.L. and J. Matthews

5. Optimization of survey sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins

   the assumptions of balanced design and the variance component of ‘penguin-by-date’ interaction equal ... inter-annual variation for mean prey size is fixed at 10%; the test power is taken as 0.9 and Type I ... and the variance component of "penguin-by-date" interaction equal to the variance component of ... variation for mean prey size is fixed at 10%; the test power is taken as 0.9 and Type I errors fixed at ... variation interannuelle minimale de taille moyenne des proies est fixee a 10%; la puissance du test est ... 10%; QYBCTBHTeJIbHOCTb. npHHSlTa 3a 0,9 H ypoBeHb norpemHocTeti THna I - 0,1. CTOHMOCTb Heo6xo ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 551–559 : Auteur(s): Marschoff, E. and B. Gonzalez

6. Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea

   (Pygoscelis adeliae) was studied at Edmonson Point, Victoria Land, during the 1999, 2001 and 2003 breeding ... females were significantly longer than in 1999 and 2001, which in turn delayed the mean departure date of ... delayed compared to dates recorded in 1999 and 2001. The average weight of adults rearing chicks was lower ... Point, Victoria Land, during the 1999, 2001 and 2003 breeding seasons. Weather and sea-ice regimes ... than in 1999 and 2001, which in turn delayed the mean departure date of males on the second incubation ... recorded in 1999 and 2001. The average weight of adults rearing chicks was lower in 2003. It is suggested ... pointe Edmonson, en Terre Victoria, pendant les saisons de reproduction de 1999, 2001 et 2003. Les ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Auteur(s): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi

7. Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies

   , Krefftichthys (Protomyctophum) anderssoni and Gymnoscopelus nicholsi. A complete list of publications is ... greatly and mainly are within a range of 5.5 to 10 cm (modal length 8.5 to 9.6 cm). Size compositions of ... cm, L95=9-10 cm (Lisovenko and Efremenko, 1982). Females were more frequent in samples (sex ratio ... at the beginning of spring (August/September). From November to May gonads of E. carlsbergi were ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Auteur(s): Sabourenkov, E.N.

8. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

   breeding sites, the principal threat to many species is from interaction with fisheries (Robertson and ... , albatrosses and petrels are not only the object of at-sea observation data (e.g. White et al., 2001; Woehler ... areas still represent areas where there is potential interaction with fisheries. Data holders ... indicated on maps), and where sample sizes are small. Ideally, analysis would be based on at least 10–15 ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)

9. CCAMLR ecosystem monitoring and management: future work

   ), Mangel and Switzer (1998) and Constable (2001) – although such modelling was also undertaken for the ... on the major species (see Yodzis, 2001 for review). Scales of Monitoring and Management for a ... , 2001). In addition, varia- tion in the fi shery might arise through varying dependence on particular ... scale during the early stages of the fi shery and to 0 1 2 3 0 1 2 3 D en si ty 0 10 20 30 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Auteur(s): Constable, A.J

10. The use of predator-derived krill length-frequency distributions to calculate krill target strength

    weeks produced a 10% difference in TS, whereas simultaneous samples from predators and nets produced ... CCAMLR Science, Vol. 8 (2001): 155-163 SHORT NOTE THE ... - frequency distribution of krill over a period of a few weeks produced a 10% difference in TS, whereas ... de quelques semaines provoquent une diffkrence de 10% de rPponse acoustique, alors que les ... varias semanas produjo una diferencia de 10% en la potencia del blanco (TS), mientras que la diferencia ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Auteur(s): Reid, K. and A.S. Brierley

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