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1. Results from the 2019 annual acoustic krill monitoring off the South Orkney Islands

   for comparison with previous survey years and provide some context for the large scale survey estimate, we here ... surveys from 2011 to 2018. The distribution was similar to previous years with most krill along the shelf ... was the second lowest on record, indicating a less patchy krill distribution than a typical year.  Author ... with previous survey years and provide some context for the large scale survey estimate, we here present ...

   Meeting Document : WG-EMM-2019/69 : Author(s): G. Skaret, B.A. Krafft, G. Macaulay, T. Knutsen and O.A. Bergstad

2. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2010–11

   Abstract:  The exploratory fishery for Dissostichus spp. has now been operating for fifteen years ... in Subarea 88.1 and for ten years in Subarea 88.2. This report summarises the timing, depth, and location ... of fishing together with the catch of Dissostichus spp. and bycatch species by year for the period 1997–98 ... to 2010–11. During the 2010–11 fishing year most of the catch in Subarea 88.1 came from the slope SSRUs ...

   Meeting Document : WG-FSA-11/45 : Author(s): M.L. Stevenson, S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)

3. Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2018

   combined) were also two to three times greater than those of last year. Catches of skates were similar ... area were close to the highest estimates for the past 10 years. For the managed by-catch species ... for L. squamifrons has been low for the past 4 years. The 2018 biomass estimates for each of the three Bathyraja spp ... . (skates) were the highest in the last 10 years. Length measurements and sex were taken for nearly 22 000 ...

   Meeting Document : WG-FSA-18/55 : Author(s): G. Nowara, T. Lamb and P. Ziegler

4. Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast

   fisheries of the patagonian toothfish Dissostichus eleginoides related with the selectivity of the type and ... . The size frequency of the population collected with straight hooks No3 and 4 are not significatively ... different, being No 3 near 31 % more efficient than No 4. Different bait do not present significative ... as the number of the straight hook increases (for example from 4 to 3) or when they change from ...

   Meeting Document : WG-FSA-91/11 : Author(s): C.A. Moreno (Chile)

5. Inter-annual variability in krill density at South Georgia: 1997–2012

   of krill was examined using a 15 year time series of acoustic observations undertaken in the Western Core ... one year were driving the mean krill density estimates for the WCB in that year. WCB krill density ... (µ, mean density for the area) showed several years of moderate to high values (µ > 30 gm ... -2) interspersed with years (1999-2000, 2004, 2009-2010) of very low density (µ < 30 gm-2).   Author ...

   Meeting Document : WG-EMM-13/14 : Author(s): S. Fielding, J.L Watkins, P. Trathan, P. Enderlein, C. Waluda, C. Goss, G. Stowasser, G. Tarling and E. Murphy (United Kingdom)

6. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

   density dis- tribution. In total, only 0.2% of the non-breeding distribution of northern royal ... on non-breeding dis- tributions are lacking for the majority of species. A full understanding of non ... (Phillips et al., 2004b). In this analysis, the dis- tribution of black-browed albatross breeding at sites ... at the other breed- ing sites: sooty albatrosses are predominantly dis- tributed in sub-tropical waters ... , the subareas with the highest proportion of albatross and petrel breeding distribution were Subareas ... petrel breeding ranges extend across the majority of the Convention Area. Subareas with the lowest ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Author(s): BirdLife International (prepared by C. Small and F. Taylor)

7. Feasibility of trawl surveys to estimate abundance of juvenile toothfish in Subarea 88.1

   over the last three years, 63% of the seabed area from 0–600 m depth was not fishable in January ... –February because of ice. Ice cover varied greatly between years, with the untrawlable area ranging from 31 ... % in 2002 to 89% in 2002. Less than 10% of the potential trawl survey area was fishable in all three years ... the last three years, 63% of the seabed area from 0–600 m depth was not fishable in January–February ...

   Meeting Document : WG-FSA-SAM-04/07 : Author(s): Wood, B.A., ODriscoll, R.L., Hanchet, S.M.

8. CCAMLR-X

   - observer program Delegation of New Zealand CCAMLR-X/BG/05 Entanglement in man-made debris of Antarctic fur ...

   Meeting

9. Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons

   techniques, from 1991 back to 1977. The predicted age structure, dominated in recent years by the 1987 year ... -class (1 year olds in 1988), was quite robust, despite the use of various combinations of survey ... proportion of 5 year olds, which was not observed during the survey on Falklands Protector in January 1992 ... . Breakdown in the credibility of the VPA results in most recent years is attributed to the invalid assumption ... , R was generated independently for each year on each run as follows: where R = mean recruitment X = {di ... that the recruitment of 1 year olds in 1991 was lower than estimated using mean recruitment from the early part ... . The predicted age structure, dominated in recent years by the 1987 year-class (1 year olds in 1988), was quite ... to the VPA the population in 1991/92 was composed of a large proportion of 5 year olds, which ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 49–79 : Author(s): Parkes, G.

10. Net-based verification of acoustic techniques used to identify Antarctic krill

    ' using an SDWBA-derived range for Sv120-3, (iii) '2 freq 2-16'- with an Sv120-38 range ... of 2-16 dB and (iv) '2 freq 2-12'-with an Sv120-38 range of 2-12 dB The '3 freq model ... orientation distributions for the two cruises were estimated with the SDWBA model, with cruise specific ... orientation distributions applied the performance of the '3 freq model' was comparable with the two ...

    Meeting Document : SG-ASAM-09/04 : Author(s): J. Watkins and S. Fielding (United Kingdom)

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