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1. Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993

   for the years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based ... density over the 13-year period were 1 703 x  103 tonnes and 53.2 g/ 2. File:  01hewitt-demer.pdf ... Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the years ... ) and biomass densities range from 2.5 g/m2 to 134.5 g/m2. Average biomass and average density over the 13-year ... out of seven cases the change in density from one year to the next matches the sign of recruitment ... men6es de janvier 2 mars a proximite de l'ile Elephant. L'abondance des classes d'ages est egalement ... in the vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ... g/m2. Average biomass and average density over the 13-year period were 1 703 X 103 tonnes and 53.2 ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Author(s): Hewitt, R.P. and D.A. Demer

2. Review of length-weight relationships for Antarctic krill

   length-weight relationships based on data collected during a minimum period of one month (Table ... ) F 0.00352 3.144 all stages (one example out of several stations) M 0.00423 3.170 31-55 92 3B gravid ... nOJIOB03peJIOCTH YJIY4maeT T04HOCTb BbI4HCJIeHHH OTHomeHHH ",lIJIHHa/Bec". 06cY}l{,lIaeTC5I BJIH5IHHe ce30 ... HHbIX H3MeHeHHH B napaMeTpax ",lIJIHHa/Bec". ,llaeTC5I p5I,lI peKoMeH,lIal.\HH no HCnOJIb30BaHHIO npHBe,lleHHbIX ... -weight relationship calculations is improved when information on sex and dominant maturity stages is ... taken into account. The influence of seasonal changes on length-weight relationship parameters is ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Author(s): Siegel, V.

3. Choosing distance between acoustic survey tacks

   of analysis of data from actual hydroacoustic surveys. The model consists of two parts, one imitating ... of the relative biomass assessment error ° (in fractions of one) to the density values variation coefficient ... k. If one can detect the direction of elongation of concentrations, then the typical ratio ... S, v, k and a are not accurate, the actual biomass assessment error may differ from the given one, and is estimated ... on the basis of typical size of the surveyed region, allowable relative error in the biomass estimate ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 153-164 : Author(s): Kalikhman, I.L., Z.I. Kizner, B.R. Zaripov and W.D. Tesler

4. Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3

   the season. These approaches, aimed at reducing seal entanglements, are similar to the two systems ... seal entanglements, are similar to the two systems implemented by Japanese vessels during the 2003 ... to cover the mouth of the net, one situated above the headrope and one below the groundrope respectively ... and groundrope connected to the warps. Two mesh planes, 44 m in width and 20 m in length, extended back ... into the body of the net by approximately 20 m and functioned similar to a giant ‘bag’ (Figure 3). Only two ... , 1 m in diameter codend 31 m 140 mm outside mesh 90 mm outside mesh 1.6 m mesh opening 80 m from wings ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 195–205 : Author(s): Hooper, J., J.M. Clark, C. Charman and D. Agnew

5. Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia

   of changing mean length at depth with month was detected, suggesting movement of animals both up and down ... slope at particular times of year. Months with a high mean length at depth are May and August ... position. Pre-spawning animals appear to be distributed all around the South Georgia and Shag Rocks shelf ... slopes. Spent animals of both sexes appear to move up slope to shallower water, and are concentrated ... but not for females. Depth is an important factor for animals of maturity stage 1; as one would expect ... there has been no suggestion of a massive concentration of effort in one small area. However, the fishery ... vessel, one observing the first cruise and the other observing the second (and third) cruises ... of the population in one of various maturity stages (Table 3). Month appears to be an important factor for males ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Author(s): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce

6. Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia

   on the mackerel icefish (Champsocephalus gunnari) have been simulated for a period of 30 years. These were ... ) have been simulated for a period of 30 years. These were: different levels of constant fishing ... with F increasing three or five years after a good recruitment; pulse fishing at an interval of three years ... to the strength of the incoming year class. An increase of F, however, should not occur earlier than four years ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Author(s): Köster, F.W. and K.-H. Kock

7. 1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 (South Georgia)

   Paper Title:  1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 ... (South Georgia) Abstract / Description:  The 1989/90 stock status and TAC assessment for Champsocephalus ... ) using standardized fishing effort. For the beginning of the 1989/90 fishing season, the stock ... 1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 (South Georgia) ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 15–27 : Author(s): Frolkina, Zh.A. and P. Gasyukov

8. Exploratory fishing for Dissostichus spp. in the Antarctic region (Subareas 48.1, 48.2 and 88.3)

   (Latitude 68°49&#039;S), and from the Bellingshausen Sea (70°38&#039;S) to Clarence and Elephant Islands (61 ... °14&#039;S), while Patagonian toothfish (Dissostichus eleginoides) were caught in waters from King ... George Island in the South Pacific Ocean (61°24&#039;S) to the Scotia Sea in the South Atlantic (58°03 ... &#039;S). Yields of Dissostichus spp. were very low in the three subareas, with values of only 5.7 ... longlines were set between 290 and 350 m (station no. 20), and in Bransfield Strait, where one end ... . However, the results obtained make it possible to identify two fish groups in the study area. One group ... the number of stomachs containing one or more individuals of each prey category is expressed ... it was possible to calculate the sex ratio. The ratio was 1.77 females per one male (xZ = 7.32, p < 0.05, Df ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 1–17 : Author(s): Arana, P.M. and R. Vega

9. Sources of variance in studies of krill population genetics

   indicated that there is significant genetic differentiation between samples taken within one region ... indicated that there is significant genetic differentiation between samples taken within one region ... in the Southern Ocean. From one site in the Mertz Glacier Polynya, krill had been captured in two net tows ... that there is signifi cant genetic differentiation between samples taken within one region. This has important ... Collection Samples of E. crystallorophias were collected from four locations during 1999 (Figure 1). One ... ’S 145º54’E; 66º29’S 146º1’E) during September 1999 (winter). One sample (n = 65) was collected from near ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Author(s): Jarman, S.N. and S. Nicol

10. Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass

    biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental ... of which one of the most fundamental is accurate echosounder calibration. The Simrad EK500 scientific ... kHz between calibrations conducted at the two locations. At 120 kHz, the required S v transducer gains ... at the two locations. At 120 kHz, the required Sv transducer gains at South Georgia (sea temperature at depth ... one of the most fundamental is accurate echosounder calibration. The Simrad EK500 scientific ... R o s s has been calibrated on six separate occasions at Stromness, South Georgia, and o n one occasion ... conducted at the two locations. At 120 kHz, the required S, transducer gains at South Georgia (sea ... H B eBpone%cKog YaCTH YMepeHHbIX BOA. B 3 T H X 6onee TenJIbIX YCnOBkiRX ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe

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