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

    and this was used to calculate monthly mean values. Monthly CPUE indices were then calculated as a weighted ... . Monthly mean atmospheric pressure gradients were estimated for the area around South Georgia. The values ... meteorological charts were averaged for each month. These monthly mean values are referred to as the air ... which the zonal and meridional air transport indices were calculated. 1 - mean position of the Weddell ... study, time series of krill abundance (CPUE) indices were derived from Soviet fishing operations in the ... were only expressed strongly in years of extreme conditions. The correlation with water temperature was ... Paper Title:  Environment–krill relations in the South Georgia marine ecosystem Abstract ... / Description:  Interannual variability in the Southern Ocean ecosystem has long been noted and physical factors ...

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

  2. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

    in length from 44 to 59 m (mean = 53 m), with a GRT of between 532 and 951 tonnes (mean = 695 tonnes ... whales (Purves, 2001). This is likely to be a conservative estimate as some fi sh are probably ripped ... most abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being ... no cetaceans were present. Catch rates were slightly higher in the presence of sperm whales and it is ... of unrecorded fish removals on stock assessment models, modifications in the behaviour of marine ... with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic Abstract ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Author(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

  3. The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3

    . However, there was a positive relationship between mean number of fish caught per haul and the number ... for the Russian, Bulgarian and Chilean fisheries was similar, with means of 1 334 m, 1 378 m and 1 473 ... distribution (Figure 7). The mean weight of fish from the Russian fishery in the northwest area (west of 41 ... in Figure 7, where there is an increasing proportion of larger fish in the northwest area. Mean weights ... 0.2 in the Bulgarian. These differences were probably a result of the different hook types used by the ... Paper Title:  The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3 Abstract ... / Description:  The 1991/92 longline fishery for Dissostichus eleginoides in Subarea 48.3 was open from 4 ... Chilean vessels. The maximum catch taken in a five-day period was 375 tonnes. Catch rate was not ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 31–48 : Author(s): Agnew, D.J. and C.A. Moreno

  4. Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data - Autumn 1989/90

    of biomass by layer. Table 1 gives mean weighted (mglm3) and absolute (thousands of tonnes) biomass. 116 ... for mean weighted biomass (not including areas of high biomass density) did not exceed 30 mg/m3 in the ACC ... in the anticyclonic meander to the west of the South Sandwich Islands. Mean value of weighted biomass in the South ... ). The Japanese estimates of specific biomass (mean value 193 mg/m3, maximum value 1 233 mg/m3; sampling gear ... Islands was assessed at 3.8 million tonnes, most of which was concentrated in the waters of the Weddell ... Sea. In contrast to this site, the one off the South Orkney Islands is well-established in terms of ... tonnes. Most of this stock was concentrated in the south-western part of the Coronation Island shelf ... Paper Title:  Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data- Autumn ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 115–121 : Author(s): Fedotov, A.C.

  5. Trawl bag selectivity in the Champsocephalus gunnari fishery

    , 5IBJI5IIO~HMHC5I lIaCTblO OCHOBHOti npOf'paMMbI 6HOJIOf'HlIeCKHx H OKeaHHlIeCKHX HCCJIe,l{OBaHHti, 6bIJIH ... BbInOJIHeHbI 3KcnepH- * AtIantNIRO, 5 Dimitry Donskoy Street, Kaliningrad 236000, USSR ** VNIRO, 17a ... Selectivity hauls were made from 17 to 20 June 1990 in an area having the mean coordinates of 54°25'S, 38 ... and had a sand-silt bottom. Mean swell was approximately five on the Beaufort scale, atmospheric ... were carried out in June 1990 in the South Georgia area concurrently with trawl surveys as part of the ... Paper Title:  Trawl bag selectivity in the Champsocephalus gunnari fishery Abstract / Description ... and the selectivity factor was 3.10 for a mesh size of 80 mm. Comparison of these results with results ... cm) as well as earlier sexual maturation of fish were noted. It was suggested that the use of Polish ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 295–312 : Author(s): Bidenko, V.G. and I.G. Istomin

  6. Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a

    in a given year, and the second is a tagging penalty whereby a mean weight is assumed to define total stock ... recoveries, the median predicted number of recov- eries (and, albeit less so, the mean; not shown here ... the stock to be completely taken in any given year. The uncertainty in r and K means that a pop- ulation ... distribution between 0.65 and 0.85 was assumed (so that the mean is the assumed value for Dissostichus spp ... tagging levels that will produce an expected abundance estimate in the following year of a given precision ... Paper Title:  Assessment and tag program adaption methods for exploratory fisheries in the CAMLR ... exploratory stocks in the CAMLR Convention Area. The assessment methodology is designed to be able to ... whilst ensuring the sustainable exploitation of the stock as per the CCAMLR management procedure. The ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M

  7. Phytoplankton distribution in the mixed layer: implication to krill abundance

    f..,=ITU-1 provided the Lagrangian velocity scale is identical to the Eulerian velocity scale. A mean ... . mean current or turbulence, namely Z(n) = ZB(n) + Zp(n). ( 1 7) We apply a simple random walk ... size ZP(n) follows a normal distribution with mean zero and standard deviation (2KoAn)1/2. We used Ko ... , 1987: 1-24. HAN, Y.-J., and S.-W. LEE. 1981. A new analysis of monthly mean wind stress over ... distribution of phytoplankton in the Antarctic Ocean. Since little is known about mixed layer dynamics in the ... . However, the effect on the dynamics is vital, affecting the distribution of particles in the upper ocean ... Paper Title:  Phytoplankton distribution in the mixed layer: implication to krill abundance ... Abstract / Description:  A one dimensional Lagrangian model of random walk is presented to study the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Author(s): Yamazaki, H. and T.R. Osborn

  8. Fish distribution and biomass in the Heard Island zone (Division 58.5.2)

    surveillance sonar, the mean width of the northwards slightly from Gunnari Ridge net (wingtip to wingtip ... 350 m, and up to 1 200 mm in deeper water (Duhamel, 1991b). This may mean that the larger fish ... was only encountered during autumn 1990. On Shell Bank, mean density was 718 kg km-' during autumn 1990 ... and 333 000 tonnes with a mean of 73 400 tonnes, whereas at Kerguelen the Lower C1 2606 945 4113 ... . In order to assess the potential of this area for commercial fishing, and to obtain some preliminary ... Paper Title:  Fish distribution and biomass in the Heard Island zone (Division 58.5.2) Abstract ... / Description:  Division 58.5.2 encompasses the southern part of the Kerguelen plateau, and contains Heard ... distribution, abundance and biology of the most important species, covering a number of years and seasons. Five ...

    Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Author(s): Williams, R. and W.K. de la Mare

  9. A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region

    coastal countercurrent Antarctic Circumpolar Current (ACC) Figure 1: Schematic of the annual mean HiGEM ... during late summer/autumn. Simulating egg and larval drift Using interpolated, monthly mean, HiGEM ... to spawn. Fenaughty (2006) also showed a significant difference in mean weight-at-length in the northern ... of the smallest toothfish taken in the toothfish fishery. The hypothesis presented is that D. mawsoni ... in CCAMLR Subareas 88.1 and 88.2 spawn mainly on the ridges and banks of the Pacific-Antarctic ridge ... along the continental slope and shelf to the east of the Ross Sea in Subarea 88.2. As the juveniles grow ... Paper Title:  A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross ...

    Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Author(s): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams

  10. Potential nursery areas for fish in the Prydz Bay region

    fish in krill fishing operations, the Scientific Committee for the Conservation of Antarctic Marine ... Paper Title:  Potential nursery areas for fish in the Prydz Bay region Abstract / Description:  A ... survey with a fine-meshed midwater trawl in Prydz Bay in January/February 1991 indicated the potential ... for the shelf area of the Bay to be a nursery ground for nototheniid and channichthyid fish. Nearly ... all juvenile fish were caught in the top 50 m over the shelf, and more than 95% were Pleuragramma ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 369–380 : Author(s): Williams, R.

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