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1. Environment–krill relations in the South Georgia marine ecosystem

   variability and it is only recently that physical datasets have been generated for the Southern Ocean. In this ... northeastern Scotia Sea around South Georgia for the period from 1974 to 1992. These indices were examined in ... be a useful index for some regions. Associations with ice-edge position and atmospheric components ... were only expressed strongly in years of extreme conditions. The correlation with water temperature was ... longitudes 20°, 30°, 40' and 50°W. For the period 1973 to 1989, a further sea-ice dataset was available ... 0 73 74 75 76 7 7 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 Year Figure 3: Variation in ... : (a), (b), (c) - in the same year; (d) - ice-edge position at 30°W averaged for December-January and ... varied greatly between years. The very high values obtained for the mean number of fishing days during ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Автор(ы): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky

2. The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations

   is determined as the product of the average density for the region under examination and the area of ... this region. For a hydroacoustic survey, the anisotropy parameters correlation radius along transects ... (sections) serve as survey parameters. The relationships described here can be used in practice for both a ... posteriori estimation of the error made when calculating the biomass, and for survey planning on the basis of ... mentioned, in practice there usually takes place an inverse relation between deterministic and random ... estimating biomass. 4. Conclusion Results mentioned here can be used in practice both for a posteriori ... product of the average density for the region under examination and the area of this region. For a ... parameters. The relationships described here can be used in practice for both a posteriori estimation of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 213-228 : Автор(ы): Kizner, Z.I.

3. Modelling krill recruitment

   Paper Title:  Modelling krill recruitment Abstract / Description:  A method is developed for using ... for generating families of recruitment functions which are consistent with the statistical uncertainty ... to Justin Cooke and an anonymous reviewer for (30) helpful comments on the draft text of the paper ... parameter we need to fix for the krill model is the rate of natural mortality (M) . In an unexploited ... to age n, and infinite thereafter, then in an equilibrium population the R(t) rate is: S can be ... model is exercised for n years without exploitation prior to calculating the mean unexploited ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 49–54 : Автор(ы): W.K. de la Mare

4. Biology and harvesting of Dissostichus eleginoides around the Kerguelen Islands (Division 58.5.1)

   (Division 58.5.1) Abstract / Description:  Dissostichus eleginoides is becoming an increasingly important ... biological information on population dynamics, as well as demographic structures and trends observed in an ... abundance index, is provided. Prospects for exploitation are discussed with respect to the development of ... from year to year and highly dependent on the harvestable resources of Champsocephalus gunnari. Vital ... well as demographic structures and trends observed in an abundance index, is provided. Prospects for ... sont indiques entre parentheses. 1979/80 it 1983/84 1984/85 it 1988/89 1989/90 it 1990/91 (5 ans ... ................................. " .................. . 20 40 60 80 Lt (2crIl interval) 250 - 350 m -+- 350 - 450 m n=235 n=1069 100 120 -*- 450m ... S0 90 188 110 128 130 30 40 50 S8 78 S8 90 la8 118128 138 Longueur totals

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 85–106 : Автор(ы): Duhamel, G.

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

   and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as ... length of C. gunnari did not reveal any selectivity pattern for any of the prey items. The availability ... years of krill scarcity), intermediate in 1995 (below years of historically high abundance), and high in ... 1996 and 1997 (in line with years of high krill abundance). This information is well in accord with ... (nearly 80% of mature fish) is in the range known for years of high food availability (75-85%), in ... frozen at -30°C and later examined at the Instituto Antiirtico Argentino. For the aim of this study ... elaborated with material from the 1994 and 1995 surveys, correspond to age groups 1 to 3 years (Barrera-Oro ... : the dietary coefficient (Q%) showed a greater importance of T. gaudichaudii (75-80%) than krill (20 ...

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

6. Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia

   for toothfish (Dissostichus spp.). Three regimes were examined, with weights of 4.25, 8.5 and 12.75 kg ... which has participated in the longline fishery around South Georgia for the past several years, and ... PRO 32 34 47 18 45 50 45 30 47 21 42 29 42 70 39 48 42 3 8 40 10 9 4 45 7 47 17 14 3 ... longlines fishing for toothfish (Dissostichus spp.). Three regimes were examined, with weights of 4.25,8.5 ... , weighting regime, toothfish, seabirds, by-catch reduction, CCAMLR INTRODUCTION Longline fishing for ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Автор(ы): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes

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

   aimed at providing two indirect methods of assessment of depredated biomass over an 11-year period (2003 ... depredation occurs on fish in the marine environment. This is the case for killer whales (Orcinus orca) and ... to 2013), accounting for spatial variations of depredation levels. In the first method, fishing data ... comparable results and thus strong support for the CPUE method. From these two methods, depredation rates ... biomass over an 11-year period (2003 to 2013), accounting for spatial variations of depredation levels ... the past 50 years. This is the case for many demersal longline fisheries at high latitudes on both ... grenadier proportion. The ideal case would be an exact 50% proportion for both spe- cies to best detect ... , represented less than 20% of all cells (Cd + Cu). Out of 145 cells in total, 83 were used for killer whales ...

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

8. Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel

   readily available for conventional coverage of harvested stocks and their ecosystems. This paper describes ... fishing and research vessel could make a large amount of important data available for both management ... , through CCAMLR, and the broader scientific community and thus improve the basis for resource evaluation ... years, most new research vessels, and also some fishing vessels, are being equipped with an instrument ... low-temperature freezers (~ –80°C), will also need to be considered. Adequate working space for data ... scientific use when the vessel is new. In general, space for a 20 ft container laboratory van would be ... important factors for an efficient trawling strategy. Further, such perfor- mance is also crucial for ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Автор(ы): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins

9. Acoustic estimates of krill density at South Georgia, 1981 to 1998

   % confidence limits <15 g m-2). For five of the summers between 1990 and 1998 it was possible to calculate ... separate density estimates for northeastern and northwestern South Georgia, and in four of these seasons ... from year to year over that time, ranging from ≈ 2 to  ≈ 150 g m-2 (fresh mass). The 1982, 1991 and ... for an area equivalent to the western box. In three other of the years considered here data were ... years ,90' ,982 ,9i5 ,pB ,9+ ,9s6 $6' 40% ,989 ,99' ,992 ,9@ ,9qb ,9qb ,9q6 ,992 49% Year Figure 2 ... given year is less than p - o for all years, then the year in Acoustic estimates of krill density ... the year in which krill density at the island was the lowest of all years for which data are ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Автор(ы): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson

10. From the Editor

    approach pro- vides a biomass estimate of 37 million tonnes for the area of the southwest Atlantic ... peer-review process (and those of the editorial staff), published work may contain errors ... Science recognises that this must be done at a scientific level and provides an opportunity for both ... legal disputations, or as an instrument for personal revenge. We do not support such misuse and ...

    Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 199

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