Résultats de la recherche

1. Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari

   12 February 1995 with only two short breaks of less than one day each. The vessel made an average ... observed during the last 20 years (Woehler, in press) underlines the importance of quantifying the ... Division 58.5.1 during longline fishery for D. eleginoides in the vicinity of the 1994/95 season with two ... icefish (Champsocephalus gunnari); RESULTS and Longliners 0 two French trawlers (78 m and 87 m in ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Auteur(s): Williams, R. and D. Capdeville

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

   including krill, four baleen whale (blue, fin, humpback and minke) and two seal (Antarctic fur and crabeater ... divides the Antarctic into two regions: one is the Atlantic and Indian Ocean sectors, which corresponds ... of this species declined substantially over the first 20 years of the fishery, from 1970 to 1990 ... , a slight increasing trend is evident for the year classes from 1990. Direct observations of the age ... north as 30°S, as an index of relative density to extrapolate abundance estimates obtained from the ...

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

3. On reproduction of Electrona carlsbergi (Tåning)

   WG-FSA-90/20 ON REPRODUCTION OF ELECTRONA CARLSBERGI ... consists of two layers: an internal one - a membrane in itself - and an external one, formed by follicular ... Condition Stage (mg) Coefficient (%) I 12-30 0.1-0.2 Oogonia Juvenile IT 40-90 0.5-1.1 Oogonia ... the Antarctic Convergence, wherein it forms concentrations during the major part of the year (Hulley ...

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

4. An assessment of CCAMLR measures employed to mitigate seabird mortality in longlining operations for Dissostichus eleginoides around South Georgia

   -chinned petrels, two black-browed albatrosses and one unidentifiable bird caught on hooks. One giant ... . Mortalities consisted of nine white-chinned petrels, two black-browed albatrosses and one unidentifiable bird ... carried two weights of c. 6 to 7 kg at a c. 50 m interval, one half-way along and the other at the end ... number of hooks was laid each night, either on one or two shorter longlines. All deck lights were ... mother line was attended by one or two winchmen working a watch of c. 3 to 4 hours. As they came to the ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 217–230 : Auteur(s): Ashford, J.R. and J.P. Croxall

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

   Peninsula region. One of the most evident signs of climate change has been ice-shelf collapse; overall, 87 ... one of the recommendations made by the Antarctic Treaty Meeting of Experts in 2010. File:  Trathan et ... two seasons 1978/79 and 1979/80 targeting marbled rock cod (Notothenia rossii) and mackerel icefish ... to a reduction of almost 25% in the ice shelf in just two years. Similarly, the area of the Larsen ... Widespread near Antarctic Ice Sheet Grounding Lines. Science, 296: 2020–2023. Rignot, E., S. Jacobs, J ... highlights how: CCAMLR Science, Vol. 20 (2013): 139–151 139 PRECAUTIONARY SPATIAL PROTECTION TO ...

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

6. Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

   year, depending on how many of the previous three years' CPUE values fall below a target level of ... prevent the expected lowest biomass of krill over a 20-year harvesting period from falling below 60% of ... -year period considered. Simulation tests, including one particular test of robustness to the ... year period, with a reference CPUE level (CPUE ref) calculated as the average CPUE over that time ... objectives. Since the analysis is stochastic, the statistics change from one 20-year simulation to the next ... ) Average annual catch over 20 years: Cav (objective n.). (ii) Catch in twentieth year: C20• 197 ... the management procedure. TAC in year y. Average annual catch over the first 20 years of operation ... biomass of krill over a 20-year harvesting period from falling below 60% of its average unexploited level ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Auteur(s): Butterworth, D.S.

7. Results of fish stock assessment survey, South Georgia region, November - December 1986

   /85 year classes. Coefficients of variation ranged from 67.9% (Notothenia squamifrons) to 12.6% (C ... I ¥ i \ (, Y I Y I \ i i { I \ i I ( I' i I i I I I I I o 10 20 30 40 50 60 70 80 90 100 LENGTH ... ' L \ i j i I , I o 10 20 30 40 50 60 70 80 LENGTH, CM 90 100 110 120 130 Figure 13. Length ... trawl equipped with 80 mm mesh and a 20 mm liner. Distance between wing nets averaged 20.6 m, and ... differential distribution of the year class by size, and more likely, the use of unlined 80 mm mesh in that ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 143-183 : Auteur(s): Gabriel, W.L.

8. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region

   one summer season was roughly estimated as two times from which follows a maximum total effective ... resulted a rate of Z = 0.88 (1989/90) and Z = 0.96 (1987/88). Production was estimated and resulted a P/B ... ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... three year life span of krill. Their age group 1 (20 to 43 mm) included the two age groups 1+ and 2 ... within a one year cycle are also given for each age group in Table 4. Since age class 1+ was almost ... -age data with a two to three year life cycle will, however, strongly affect the results by increasing ... than in 1989/90, although two age groups (1 + and 3+) were almost missing in this 166 season ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Auteur(s): Siegel, V.

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

   Abstract / Description:  Selectivity studies were carried out for two types of steelon codends used in ... commercial fishery, with a nominal mesh size A = 80 mm and A = 100 mm, made of double twines with a thickness ... Chionodraco rastrospinosus exhibit a lower tendency to pass through meshes of the codend than Antarctic ... ~ FLOATS 90 PlS CP200 'S ~ ,... I)' 30 PlS ~ Q.'" ~ l-!£ADL1N£RIGG lH C Schematic drawing ... ..-_, __ ...,.--_,.--_...,.--__ 20 30 1.,0 50 [CM] I=\S+\ LENCHl Selection of bumphead notothenia on ... carried out for two types of steelon codends used in commercial fishery, with a nominal mesh size A = 80 ... those in the 80 mm codend (Table 3). During the study, due to a failure, one codend had to be replaced ...

   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.

10. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

    3S'W 30'W 2S'W 20'W 1S'W r-------------------------~------------~------t_SO'S ...... 00 '1 ... ) 30'W 2S'W 20'W Figure 1: FIBEX survey areas and CCAMLR statistical sub areas in the West Atlantic ... -- --, ",,' -j 20'[ 30'[ .to'[ 50'E Agu(hos, Norlon DuPresne, Kalyo Noru and Nel 10 Don HERCATOR ... ~--~--~--~--~--~----~--~--~--~~ 20 25 30 35 40 45 50 55 60 65 70 Length (mm) Figure 3: Relationship between krill target strength ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Auteur(s): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss

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