Résultats de la recherche

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

   - ment derive from control theory (Cunningham and CCAMLR Science, Vol. 20 (2013): 119–137 119 A ... feedback loop have a nominal time‐step of one year. The controlled system (here the operating model ... process can be controlled through weight- ing. The area‐specific catches for the first year in the ... simulations. Parameter Value MPC prediction horizon N = 20 Input bounds Umin = [400 400]T Umax = [1 000 ...

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

2. Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands

   deployed at a level of 30 m from the surface because at this level krill concentrations are most frequently ... levels (0, 10, 20, 30, 40, 50, 75, 100, 125, 150 and 200 m). Chl-a concentration was determined by ... circulation was studied with satellite-tracked buoys equipped with curtain drogues deployed at a level of 30 ... bouees suivies par satellite et equipees d'ancres de cape, deployees a 30 m de profondeur, niveau ... Ha ypOBHe 30 MeTpoB OT nOBepxHocTH, nOCKOJIbKY lIaIl\e Bcero KOHl.\eHTpal.\HH KPHJI5.I ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

3. Possible effects of different levels of krill fishing on predators – some initial modelling attempts

   fluctuations together with preliminary information on adult survival and breeding success patterns for certain ... variability, the figure actually used was the average of the medians over the last 50 years of the 200-year ... (first year) 'survival rate' incorporates the effects of (changing) pregnancy rate as well as the ... above (i.e., the '1 + biomass ' ) a t t he 'start' of t h e year (i.e., 1 November, see ... reproduction at the start of year y; K, is the number of such female predators at deterministic ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Auteur(s): Butterworth, D.S. and R.B. Thomson

4. Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds

   I I / B / / /: I I I I I ./e r-=- 20 30 Figure 5: Selectivity ogive for ... ..-_, __ ...,.--_,.--_...,.--__ 20 30 1.,0 50 [CM] I=\S+\ LENCHl Selection of bumphead notothenia on ... -.-_ .... 1 20 1 1 1 I 1 1 1 30 ':'0 50 Figure 7: Selectivity ogive for Antarctic icefish by ... 40 I J i 30 I 20 Figure 8: Selectivity ogives for Antarctic icefish on Antarctic fishing grounds ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Auteur(s): Zaucha, J.

5. Champsocephalus gunnari stock status in the South Georgia area

   intensity was F 0.1. In the first two cases TAC=25-30 thousand tonnes and stock size does not change. For ... recruitment was taken at the lowest possible level for all these years (400 million specimens). Catch-per-unit ... was FO.1• In the first two cases TAC=2S-30 thousand tonnes and stock size does not change. For the ... les deux premiers cas, la T AC=25-30 mille tonnes et la taille du stock ne change pas. Dans le ... ,llByX CJIY'-Ia51X OllY=25-30 TbIC. T., H BeJIH'-IHHa 3anaca He H3MeH51eTC51. B TpeTbeM CJIy'-Iae OllY ... intensidad de pesca fue FO.1. En los dos primeros casos, la T AG=2S-30 mil toneladas y el tamano de la ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Auteur(s): Borodin, R. and P. Kochkin

6. Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)

   20-year fi shing history, the precautionary catch limit had never been approached. Furthermore, the ... this amounted to only 20% of the total catch. The analyses reported here are restricted to the ... was 30%. In April 1988 the fi shery took 19.7% of the available krill within the fi shing area. This ... 48.2 did not exceed 19.8 ± 4.8% at the same assumption of 30% bias of the fl eet operation area ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Auteur(s): Kasatkina, S.M. and V.F. Ivanova

7. The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach

   . The addition of a 20 g lead sinker to a conventional 20 g tuna hook reduced the sink time of bait ... the effect of added weight (sinkers) on the sink rates of bait. Lead sinkers weighing 10 g, 20 g, 30 ... . Fish with inflated swim bladders floated, however, even when thawed. The addition of a 20 g lead ... sinker to a conventional 20 g tuna hook reduced the sink time of bait bearing a hook alone by 50% to 2 ... decongeles, dont les vessies natatoires etaient gonflees flottaient. En fixant un poids de 20 g 3 un hamecon ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Auteur(s): Brothers, N., A. Foster and G. Robertson

8. On reproduction of Electrona carlsbergi (Tåning)

   WG-FSA-90/20 ON REPRODUCTION OF ELECTRONA CARLSBERGI ... the Antarctic Convergence, wherein it forms concentrations during the major part of the year (Hulley ... diameter from 10 to 30 J.Ill1. The membrane has no structure. The cytoplasm is heterogeneous; the ... towards the animal pole of the egg. The phase of maturation is associated with yolk hydration and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Auteur(s): Mazhirina, G.P.

9. Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors

   chinstrap penguins. 0.4 0.6 0.8 1.0 Fr ac tio n of m ax im um c ou nt 0 5 10 15 20 25 30 Days ... since maximum count 0 5 10 15 20 25 30 Days since maximum count 0 5 10 15 20 25 30 Days since maximum ... Days since maximum count 0 5 10 15 20 25 30 0 5 10 ... 15 20 25 30 0 5 10 15 20 25 30 gentooAdélie ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece

10. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

    at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at night. In ... ;, () 20 30 40 50 60 ~~~~~ ~ ~~~~£1 " " " " Body length ( mm ) Maturity stages Figure 5: Body length and ... , tending to be at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at ... 50 a 100 m de jour alors qu'il frequente une couche moins profonde, de 20 a 50 m de nuit. Au large ... Ha r JIy6HHe 50-100 M, a HOqblO 6JIH)I{e K nOBepxHocTH B ,l(Hana30He 20-50 M. B HarYJIbHbIX apeaJIax ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 273–285 : Auteur(s): Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu

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