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1. Seasonal variation in acoustic estimates of krill density at South Georgia during 2001/2002

   Antarctic Survey regularly since 1996. Krill density in November was low (5 g m-2), higher in both the two ... surveys in January (46g m-2 and 72 g m-2) and had decreased to 12 g m-2 by May. Our repeated surveys at ...

   Meeting Document : WG-EMM-02/39 : Автор(ы): C. Goss, S.A. Grant, N. Cunningham, J.L. Watkins, P.N. Trathan, E. Murphy and K. Reid (United Kingdom)

2. 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 ... freq 2-16' algorithms correctly identified all the aggregations as krill. However, different krill ...

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

3. GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH

   of 30,050. Catch-weighted length frequencies indicated that icefish population was dominated by 2 ... the 1+ fish produced yield of 3445 tonnes in Year 1 (2008/09) and 2318 tonnes in Year 2 (2009/10). In ... Scenario 2, in which the 1+ fish were excluded and biomass adjusted accordingly, yields were 3372 and 2248 ... tonnes in Years 1 & 2 respectively. The Patagonian toothfish population was dominated by the same ...

   Meeting Document : WG-FSA-08/28 : Автор(ы): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)

4. Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons

   Abstract:  Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... fit to CPUE and cumulative catch data from the Phase 2 depletion experiments did not have significant ... local abundances of P. spinosissima. Approximately 6000 crabs were tagged and released during Phase 2 ... and density were made for the area around Phase 2's third depletion square. The assumptions of ...

   Meeting Document : WG-FSA-96/34 : Автор(ы): Watters, G.

5. East Antarctica Planning Domain MPA Planning Reference Document #1: Draft MPA Report Part 1 – the Planning Domain and Candidate MPAs

   planning domain and candidate MPAs (WG-EMM-14/48, Sections 1, 2, and 3), Part 2- Description of the ... provides the first part, with the following sections:  (1) Introduction, (2) Objectives for the planning ... ) Identification of candidate MPAs, (6) Analysis of outcomes, (7) Data holdings at the Secretariat. Parts 2 & 3 ...

   Meeting Document : SC-CAMLR-XXXIII/BG/38 : Автор(ы): Delegations of Australia and France

6. Density estimation of Antarctic krill (Euphausia superba) around South Shetland Island and Elephant Island (Subarea 48.1) using two frequencies with 38 and 120 kHz

   ) each transects krill AT. The weighted krill density was estimated to be 4.27 g/m 2 (CV=43.42%) applying ... (a) total krill AT and 4.17 g/m 2 (CV=44.23%) applying (b) each transects krill AT using swarm ... integration method and 3.70 g/m 2 (CV=43.83%) applying (a) total krill AT and 3.49 g/m 2 (CV=43.60%) applying ...

   Meeting Document : SG-ASAM-2019/03 Rev. 1 : Автор(ы): S. Choi, S. Chung, I. Han, W. Oh, D. An and K. Lee

7. Distribution and abundance of Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006

   -2. B0 was estimated to be 12.46 million tonnes with a CV of 15.15%. Krill were widely distributed at ... relatively low densities throughout the survey area; only 13% of the 2-km-alongtrack echo-integration ... intervals were devoid of krill, 50% of intervals registered densities of 1 g m-2 of krill or less, and 80 ... % of intervals registered densities of 10 g m-2 or less. Mean densities were highest in the waters to ...

   Meeting Document : WG-EMM-07/33 : Автор(ы): T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S. Nicol (Australia)

8. A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998

   Abstract:  A random stratified trawl survey of Mackerel icefish in 2 populations (Plateau and ... Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... population. Unlike the previous 3 years, the Age 2 cohort in 1998 is very weak and is expected to contribute ... little to the biomass in subsequent years. If recruitment to Age 2 in 1999 is also weak then the fishery ...

   Meeting Document : WG-FSA-98/54 : Автор(ы): A. Constable and D. Williams (Australia)

9. Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability

   very low (3.5 g m-2) but rose significantly (P = 0.048) by mid-season (to 34.7 g m-2). In a pattern ... was less than that in the eastern box (80.4 g m-2). Analysis of mid-season western survey box transect ... off the central north coast of South Georgia mid-season revealed a krill density of 47.2 g m-2 that ... density to the south-west of South Georgia was 32.1 g m-2 mid-season. By March, krill density in the ...

   Meeting Document : WG-EMM-01/15 : Автор(ы): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)

10. A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.

    selecting among Fishing Options 2, 3, and 4 are tradeoffs between the risks to predator populations and ... . Implementation of Fishing Option 2 (using the subdivisions reported here) will require that the fishery mostly ... move, to a lesser extent than Fishing Option 2. Up to harvest rates defining the current trigger level ... Fishing Option 3 than for Fishing Option 2 because the former option requires slightly more fishing in ...

    Meeting Document : WG-EMM-08/30 : Автор(ы): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)

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