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  • 20世纪80年代初 首次提出“政企分开”的概念。民航北京管理处顺应时代要求,实行重大体制改革,组建了中国民航北京管理局、中国国际航空公司和北京首都机场
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  • 20世纪80年代初 首次提出“政企分开”的概念。民航北京管理处顺应时代要求,实行重大体制改革,组建了中国民航北京管理局、中国国际航空公司和北京首都机场
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  1. Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)

    Survey 9 (20 January to 9 February 1988, RV Evrika, Figure 4B) As in October 1984, this survey covered ... of krill's concentration off South Georgia Island. Rybnoe Khoziaistvo, 9: 20-21. (In Russian). HEYWOOD ... in the maintenance of Euphausia superba Dana population in the Weddell Sea. Oceanology, 20: 295-300. (In Russian ... Gizhiga eT 1986 7 2 May to5 Jun Kovtun eT 1988 8 11-23 Dct 1984 Evrica IK 9 20 Jan-9 Feb Evrica IK ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Author(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin

  2. Marine debris and fishing gear associated with seabirds at sub-Antarctic Marion island, 1996/97 and 1997/98: in relation to longline fishing activity

    unregulated and sanctioned longline fishing for Patagonian toothfish within the 20 n mile Economic Exclusive ... in association with seabird nests at Marion lsland during this study (Table l), of which most (80%) were from ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 85–96 : Author(s): Nel, D.C. and J.L. Nel

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

    ., 2004; Hill et al., 2007a; Plagányi and Butterworth, 2012). CCAMLR Science, Vol. 20 (2013): 97–118 ... which ensure its stable recruitment) Probability that krill abundance falls below 20% of median ... multiple stochastic simulations of 40 years nominally beginning in 2007 and par- titioned into 20 years ... of fishing, using a can- didate catch allocation option and a specified allowable catch, followed by 20 ...

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

  4. Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change

    highlights how: CCAMLR Science, Vol. 20 (2013): 139–151 139 PRECAUTIONARY SPATIAL PROTECTION ... (Subarea 48.1) between 1978/79 and 1989/90. Most fishing occurred in the two seasons 1978/79 and 1979/80 ... , to the extent known, were conducted within 20 n miles of glaciers on the islands and the tip of the Antarctic ...

    Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Author(s): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock

  5. The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species

    , lighter lines are where prey make up at least 20% but less than 50% of the diet. Interactions where prey ... make up less than 20% of the diet are not shown. This approach recognises the hierarchy ... annual yield (Constable et al., 2000). The amount was selected to deplete the stock ill 20-30 years, wl ... between trials. The fishery depletes Prey 1 to zero after 20 years. Prey 2 is more abundant (-3x) than ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Author(s): Constable, A.J

  6. Krill fishing in the Scotia Sea in relation to bathymetry, including the detailed distribution around South Georgia

    operated in water depths of about 200 and 500 m over a restricted area of about 30 x 20 km. There were ... .). Antavctic Oceans and Resources Variability. Springer- Verlag, Berlin Heidelberg: 57-80. Trathan, P.N ...

    Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 1–17 : Author(s): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt

  7. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

    -conical pots of approximately 80 cm height were constructed of a steel frame and covered with mesh ... ( k g ) 366 6 625 Number 435 20 193 Table 6: T h e number and ercentage o f female Pnvalonlis foriiiosn ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Author(s): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves

  8. Management and assessment options for the crab fishery around South Georgia

    part of the stock. The target for the Alaskan king crab is between 20 and 60% depending on whether ... (Henderson) off southwest Africa, 1979/80. Fish. Bull. S. Afr., 16: 45-55. Miquel, J.C., P.M. Arnaud ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Author(s): Basson, M. and D.D. Hoggarth

  9. The gentoo penguin as a candidate species for the CCAMLR Ecosystem Monitoring Program

    breeding populations in the South Georgia and Antarctic Peninsula Study Regions (a minimum of 80 000 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 483–488 : Author(s): Croxall, J.P. and T.D. Williams

  10. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines

    only be estimated using equation (4) because 100% of lines were depredated, represented less than 20 ... (< 25 individu- als) being responsible for over 80% of all depre- dation events (Tixier et al., 2010 ...

    Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Author(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet

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