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1. Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system

   %. There was little indication that agreement between experienced investigators was higher than between ... found to be unsuitable and staining with alizarin did not enhance the internal structures. Poor ... among readers of most species is likely to be associated with the scarcity of validation studies in ... may reduce that problem. Comparative age determinations on a workshop basis which should be combined ... indication that agreement between experienced investigators was higher than between experienced and less ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Autor(es): Kock, K.-H.

2. Status of krill target strength

   aggregations of live euphausiids and should not be affected by a frequent cause of bias in single-animal ... high signal-to-noise-ratio conditions, are consistent with the general pattern. Several specific ... , general prediction curves for the target strength are presented that are applicable to a wide range of ... accordance with the size range of the animals of interest so that the scattering would be in or near the ... kHz). A chirp 112 signal was used so that each animal could be insonified simultaneously with ... pressure field is to be evaluated, (0 is the angular frequency, and t is time. The scattered pressure ... advantage of presenting RTS versus ka is that data spanning a wide range of lengths and frequencies can be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Autor(es): Foote, K.G., D. Chu and T.K. Stanton

3. A functional division of Electrona carlsbergi (Tåning, 1932) area of habitat in relation to the latitudinal zonation of the Southern Ocean

   Southern Atlantic along two meridional transects at 17° and 20°W in the latitudes from 37°30' to 55°30 ... 'S. The survey was mainly focussed on studies of distribution of adult and pre-spawning Electrona ... Zone and Subtropical Frontal Zone. The centre of the species' area of habitat is in the Sub ... by the theory that the reproductive part of the E. carlsbergi distribution area coincides with the ... characteristics of the species, it should be noted that during our survey the change in maturation of male and ... . carlsbergi underwent biological analysis. Figure 7 shows that fish with gonads only at the second stage of ... only a small number of females at the Stage III of maturity. It must also be noted that, unlike ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 369–395 : Autor(es): Zemsky, A.V. and S.A. Zozulya

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

   information how net haul stations should be selected and how transects should be modified if the planned ... survey tracks cannot be completed. The survey took place in  January-February 2000 and involved ships ... uncertainty regarding the relative abundance of krill in the open ocean compared with that over the ... al., 1998; Sushin and Shulgovsky, 1998), it is important that the B, estimate be based on a survey ... that samples all areas considered to be important for the biomass assessment. The FIBEX survey was ... be available. Effort was therefore allocated so that each ship occupied every third large-scale ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Autor(es): 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

5. Estimating optimal observer coverage in the Antarctic krill fishery

   ratio is sufficiently close to 50% that sampling needs to be efficient at both vessel and haul level. It ... is proposed that an efficient sampling proportion, at least for South Georgia, should be >50% of ... . The South Georgia data suggest that such strategies should be pursued for at least four years before ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... here would suggest that this number should be four years or more. It was not possible to test, with ... variance. However, the ratio is sufficiently close to 50% that sampling needs to be efficient at both ... levels in that fishery. The South Georgia data suggest that such strategies should be pursued for at ... devel- opment, the CCAMLR Scientific Committee has expressed concern that such an increase should be ...

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

6. Results of a longline survey on seamounts in the southeast Atlantic and in Subarea 48.6 and Division 58.4.4

   toothfish (Dissostichus eleginoides), with 2 822 individuals caught (83% of total catch). Grenadiers of the ... structure of D. eleginoides caught. Lengths of individual D. eleginoides generally increased with depth ... although this trend may be confounded by the presence of local seabed features, and juvenile fish in nearby ... with the highest catch (weight) per unit effort was 600 to 800 m, although absolute values varied ... caught. Lengths of individual D. eleginoides generally increased with depth although this trend may be ... , seamounts were irregular with extensive slope areas and no plateaus (note that the Bouvet Island shelf was ... obtained it can be concluded that there was an inverse relationship between the abundance of D ... of catches of D. eleginoides that could not be explained by interspecific competition for bait ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 99–116 : Autor(es): López Abellán, L.J. and J.F. González Jiménez

7. A balanced model of the food web of the Ross Sea, Antarctica

   which means that the model has greater taxonomic resolution towards the top of the food web than the ... fractions and other transfers of biomass between groups were adjusted simultaneously. It was found that ... levels are in close agreement with those derived from isotope and other ecosystems. In the balanced model ... hypothesis that depletion of Antarctic toothfish by fishing would change the diet of predators of toothfish ... (unfished) biomass, so that changes from the unfished state may be relatively small as yet. The modelling ... literature tend not to be self consistent so that expert opinion and/or numerical techniques are used to ... assumption that all parts of the ecosystem will be in balance in an average year. These balance equa- tions ... parameters in the model to be revised. Nevertheless, the authors feel that the parameters obtained here ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Autor(es): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet

8. New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands

   the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... outer shelf. The three-year cycle observed previously seems to be related to the maturation stage of ... data from the study period to be compared with those collected previously. Length frequency ... studied (1992/93). It must be noted that the situation in winter 1989/90 must certainly be close to that ... the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... outer shelf. The three-year cycle observed previously seems to be related to the maturation stage of ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Autor(es): Duhamel, G

9. Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl

   the krill distribution field with high biomass of aggregations was observed in the western part of the ... krill transportation into the South Georgia region is considered. It is shown that the absence of krill ... conditions (lack of water flow from southern areas). It is also demonstrated that the absence of krill in the ... eastern part of the Scotia Sea may cause it to be absent from the South Georgia region regardless of ... October-l4 December 1984 The results are presented in Table 2. It should be noted that mean estimates ... , along with other factors, are of great importance. In this regard, it would be interesting to ... reproduction which started in January (Priddle et al., 1988). Initial calculations showed that with a mean ... Peninsula (e.g. Maslennikov and Solyankin, 1988), it may be suggested that the multiannual trend observed ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Autor(es): Sushin, V.A. and K.E. Shulgovsky

10. The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns

    –1988. It is likely that environmental conditions and operational constraints influenced the ... variability of the meridional atmospheric processes. Retrospective data analyses show that the fishing effort ... this period. It should be noted that the VDF data presented in this paper were collected by ... ct or fr om Ja nu ar y 19 77 to D ec em be r 19 91 . Y ea rs * T ot al K ri ll ... to D ec em be r 19 91 . T yp e of V es se l 19 77 19 78 19 79 19 80 19 ... 1982, the impor- tance of Subarea 48.1 increased, with fi shing effort reaching a maximum for that ...

    Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Autor(es): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky

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