Résultats de la recherche

1. Beyond MSY: a consideration of definitions of management objectives

   fishing on the natural rate of increase can be derived from the earlier equations in the form C = R ... exploited. In the simplest form of this situation, in which the stock-recruit relation is known, it is ... stock-recruit relation is not easy, some estimate of its general form and hence of the form of the ... largest stock in the data series, the MNR for plaice being indeterminate but certainly less than 30 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Auteur(s): Gulland, J.A.

2. Estimating optimal observer coverage in the Antarctic krill fishery

   on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... placés sur environ 50% des navires pêchant en une saison et étaient présents à bord pendant environ 30 ... (% ) T ot al h au ls w it h kr ill sa m pl in g (% ) A ca m ar 20 02 30 7 ... 05 46 3 22 4 13 7 61 56 30 41 12 Fe ol en t 20 05 43 1 43 6 32 6 ... been present on board for about 30% of that season. They have achieved a rate of krill sampling ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Auteur(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

3. Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991

   the hyperiid T. gaudichaudii, krill and mysids form their staple food. A comparison with earlier ... Bundesrepublik Deutschland. Arch. Fisch. Wiss. 30 (Beih.l): 40-61. 19 1:5 41° w 39° 37" 35° .:.::I· ~t ... ubiquitous, albeit much smaller T. gaudichaudii which has a much lower caloric value than krill. In these ... T. gaudichaudii (62.5%), E. superba (22.1 %) and mysids (predominantly A. maxima) (21.3%). Although ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Auteur(s): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski

4. A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica

   derived for both sexes combined are: L ∞ 22.1 cm SL; K 0.167 y –1; t 0 –0.4 years. Parameter estimates ... consecutive modes at 8–9, 30–40 and 50–70 mm in December, and assumed they rep- resented the 0+, 1+ and 2 ... 5. 0 0. 15 8 0. 13 2– 0. 18 4 –0 .4 –0 .6 to – 0. 1 A ll 30 4 1– 14 22 ... P en in su la 1 A ll 12 51 0– 12 30 .3 - 0. 06 4 - –1 .5 - C om bi ne ... d1 A ll 17 86 0– 14 30 .8 - 0. 07 3 - –1 .2 - C os ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Auteur(s): Sutton, C.P. and P.L. Horn

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

   platforms of land ice that form where glaciers or ice sheets flow towards a coastline and onwards over ... that form fol- lowing ice-shelf collapse will be susceptible to colonisation by species from areas ... to better inform CCAMLR management decisions (CCAMLR, 2009b; www.ccamlr.org/ resolution-30/xxviii ... ); and Subarea 88.3 has 30 individual areas, with a total area under ice shelves of 88 538 km2 (equiva ...

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

   ) provides output in the form of measurable state variables such as biomass and, trivially, catch. An ... ) where ( ). denotes the expectation operator and 2 Q x denotes the quadratic form Tx Qx. The vec ... represent the dynamics of real ecosystems. The operating model can be written in the gen- eral form ... 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

7. Distribution characteristics of krill aggregations in the fishing ground off Coronation Island in the 1989/90 season

   \~. P . • . • . • 20 30 • • t • , "' ... I' 50 t I· ... ··"· ", • . 0 . 01 . . I ... -east (500 1O'S to 59° 30'S and 43°30'W to 44°W) and south-west (Figure 1). In the daytime, krill was ... dawn (2:30 to 3:00 a.m.) and after five a.m. these swarms migrated downwards (Figure 2b). Mean catch ... recorded as "tracks" with clearly defined daily vertical migration. At night-time (from 0 to 2:30) krill ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 49–73 : Auteur(s): Kasatkina, S.M. and V.I. Latogursky

8. Species identification and age estimation for the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea

   in the Ross Sea (CCAMLR Subarea 88.1). The zones are assumed to form annually as this ageing ... Ross Sea (CCAMLR Subarea 88.1). The zones are assumed to form annually as this ageing methodology has ... . holotrachys Species identifi cation and age estimation for M. whitsoni 44 Marriott et al. 0 10 20 30 ... 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 Age (years) To ta l l en gt h ... linear regressions. Males y = 0.3287x + 0.511 R2 = 0.865 n = 552 0 10 20 30 40 0 20 40 60 80 100 ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 37–51 : Auteur(s): Marriott, P., P.L. Horn and P. McMillan

9. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   usual GLM form which must be a function only of μ (i.e. including the simplest case of V(μ) = μ0 = 1 ... are obtained using an estimate of the variance of the sum of linear predictor terms used to form the ... - sible model of catch distribution, conditional on fi xed and random effects, to be used in the form of ... 20 30 40 50 -0 .6 -0 .4 -0 .2 0. 0 0. 2 0. 4 0. 6 Ship index R an do n ef fe ct e st ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Auteur(s): Candy, S.G

10. Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys

    Sampled Processed 7 7 54 37 6 5 43 32 7 6 30 27 7 7 3 6 31 Minimum and maximum sample sizes ... frozen at -30°C and later examined at the Instituto Antiirtico Argentino. For the aim of this study ... between 25 and 30 cm was also evident. At SR, the range of predominant sizes was narrower. It should be ... empty stomachs predominated in the north-western region of the SG shelf (around 54"05'S, 38"30'W in ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Auteur(s): Barrera-Oro, E., R. Casaux and E. Marschoff

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