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Commission pour la conservation de la faune et la flore marines de l'Antarctique

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  1. Modelling and decision making as part of the CCAMLR management regime

    of CCAMLR Article II. Eight attributes (purpose, description, variables, driving forces, time ... fishing. 5 years. 1 year unless there is a seasonal influence ·on the population. Data limited ... and prey biomass. Harvest of predators and prey. 5 years. 1 year unless there is a seasonal ... biomass. Prey biomasses and harvesting. 5 years. 1 year unless there is a seasonal influence on the ... year being adequate, or less than one year if seasonal influences need to be considered. The ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 295-322 : Auteur(s): Miller, D.G.M.

  2. Do krill and salps compete? Contrary evidence from the krill fisheries

    krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... particles greater than 20 pm (Wright et al., 1996). Therefore, in our case, salps may have been excluded ... be active feeding grounds for krill, which effectively filters particles larger than 20 pm (Meyer ... , February 1982. Meeresforsch., 30: 220-239. Kawaguchi, S., T. Ichii and M. Naganobu. 1997. Catch per ... the catches was evident when both salps and krill were taken together. In the Livingston Island area ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Auteur(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

  3. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

    deposition typically takes more than a year (Everson et al., 1996), with the final maturation process ... leading to an enlarged ovary of about 20% of the fish total mass. Spawning occurs in the period July to ... language of bioassay - see Finney, 1978, Chapter 20) to cater for the situation where a proportion (propn ... ve r sus 1997) a n d / o r two-mon th periods, or separate year combined w i th two- month ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Auteur(s): Everson, I. and A.W. Murray

  4. 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

  5. A review of the trophic role of mesopelagic fish of the family Myctophidae in the Southern Ocean ecosystem

    . La quantite importante de meso- et macroplancton consommee par les Myctophidae met en evidence le ... throughout the entire year, and by high plankton productivity to depths of 500 m or greater (Voronina, 1971 ... Vozrozhdenie in the Falkland/Patagonian area (46"00f to 46°30'S,58030' to 60°00'S) show that the highly ... V.B. Tseitlin. 1980. Secondary production in the pelagic layer of Antarctica. Okeanologiya, 20 (6 ...

    Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 71–77 : Auteur(s): Kozlov, A.N

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

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