Résultats de la recherche

1. Status of the FIBEX acoustic data from the West Atlantic

   - one for each cruise (Figure 1); frequency distributions of Mean Volume Backscattering Strength (MVBS ... ) - one for each cruise (Figure 2); and krill density distributions (gm-2) - one for each cruise (Figure ... Odissey covered two adjoining areas within the Scotia Sea as well as the area to the north of South ... within one of the Scotia Sea survey areas. Following conversion to MVBS, no further problems have ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Auteur(s): Trathan, P.N. and I. Everson

2. The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys

   abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... CO.llPY:>KeCTBa (65°30' - 68°00' lO.ill., 60-80° B . .ll') B 1988-1990 rr. (C6op npo6 TpaJIOM AH:3eKCa ... census surveys have been carried out over the whole area (south of 600 S between 60 and 80° E) and, in ... particular, in the southern coastal waters of the area (south of 65°30'S). Until 1988 krill biomass was ... 1990 Macro (fJ067°S 590000 125 30 47 28±9 - (January) flJ°to750£ 5 1990 Meso 65°30' to 67°08'S 53800 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Auteur(s): Bibik, V.A. and V.N. Yakovlev

3. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

   (b) Frontal zone 25 80 ,-... x 20 60 >. u 15 c: 40 cD :::J 10 c- cD ..... 20 u.. 5 ~ 0 0 ... c: cD 10 :::J ~ c- · . cD 20 · . .... 5 · n'l u.. '.' '.' 0 .. 0 i I I I I I 30 60 ... and 30 mm correspond approximately to ages 3+ and 1 + years respectively. The 49 mm length mode is ... absentes des zones neritique et cotiere. Ceci met en evidence l'importance potentielle des ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

4. Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48

   for implementation. However, two of the alternatives (i.e., protective zones and critical periods) are ... unsatisfactory only because they would alter current fishing patterns. These two alternatives could be ... single year. Then, for the following two years, that subarea would be closed to fishing. For example, if ... Shetland Islands. Document WG-CEMP-90/30 Rev. 1. CCAMLR, Hobart, Australia: 24 pp. CROXALL, J. 1990 ... fishing during the two following years while Subareas 48.2 and 48.3 were subsequently opened and closed ... available for implementation. However, two of the alternatives (Le., protective zones and critical periods ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Auteur(s): Watters, G. and R.P. Hewitt

5. Can toothfish catches be used to predict the presence of vulnerable benthic invertebrate taxa?

   °W 80° S 75° S 70° S 65° S 60° S 150 °E 160° E 170°E 180° 170°W 160°W 150°W 80° S 75° S ... spatial analysis. 60° S 65° S 70° S 75° S 80° S 160° E 150 °E 170°E 180° 170°W 160°W 150°W ... one VME taxon), many individual taxa were rarely observed (Table 2). Correlations of presence are ... Parker and Smith 90 Table 1: Explanatory variables offered to the forward stepwise fitting of a ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 87–96 : Auteur(s): Parker, S.J. and M.H. Smith

6. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   example 80%) File:  08ball.pdf ... is patrolling the region. Vessel Starting date Ending date One 30 44 Two 60 74 Three 90 104 ... 20 Vessels. Evasion 0.2 E st im at ed d ay s fis he d 300 400 500 600 700 800 900 Actual ... days fished 200 400 600 800 1000 E st im at ed d ay s fis he d 20 Vessels. Evasion 0.5 ... Actual days fi shed 5 illegal cruises 10 illegal cruises 20 illegal cruises E st im at ed d ay s ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Auteur(s): Ball, I

7. The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design

   krill which are used in models to estimate sustainable yield in Area 48. The survey design includes two ... large-scale oceanic strata: one in the southwest Atlantic located in the Scotia Sea, and the other to ... will take several years and will result in a significant increase in the knowledge of krill length ... estimate sustainable yield in Area 48. The survey design includes two large-scale oceanic strata: one in ... required to sample two stations, one station would be sampled around local midnight, the other around ... Limit of Grid of Grid Northern Southern Western Eastern Scotia Sea 62'5, 40°W 0" 49"s 62"s 56"W 20°W ... Parallel 2 Meridian Projection Shift Scotia Sea WGS84 Metres 54"30'S 59"30fS 40°W 62"W 0, 0 Antarctic ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Auteur(s): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly

8. Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution

   model in predicting class/bin by year frequencies is used to obtain a single, across-years, over ... random variation across years in one of the selectivity function parameters and similarly for the ... year is important for such assessments, and this issue is studied using simulation. Between-haul ... heterogeneity within fishing year was simulated using samples from the Dirichlet-multinomial (D-M) distribution ... externally via the above method and aver- aged across years to give an updated estimate of n’. This two-step ... centred year value obtained from the integer values of year, y, so that for a 20-year simulation period ... year of the 20-year simulation period to 8.12 for the last year with a value at year 10.5 of 7. For ... to 0.1544 by year 20 with a value of 0.13 at year 10.5 and recruitment was also varied lin- early ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Auteur(s): Candy, S.G

9. Estimates of fish stock biomass around South Georgia in January/February 1985

   reduction in stock size to 10 – 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... recruitment of one or two abundant year - 9 - classes. The dependance of the fishery on the a bund ance ... & BUREAU, 1984, table 50). 3.4 Champsocephalus gunnari Except for one haul yield i ng 1. 4 t/30 min ... were seen domi na ted by 3 years old. fish (age class II) which is presumably the recruit i ng year ... catche s (fig. 13). fa 1975/76 and 1977/78 catches consisted mostly of individuals of 50-80 cm. Stock ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Auteur(s): Kock, K.-H.

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

    Article II of the CCAMLR Convention. The criteria will depend on whether the main concern is with ... yield that can be sustained is one corresponding to full exploitation of the weaker year-classes ... be met by taking an amount R-S t' so that the escapement (i.e. recruitment op less catch) will ... natural mortality coefficients, and as function of the two main characteristics of the fishery - the age ... nominal effort each year, based on the values of F and fishing effort in the most recent years. Since ...

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

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