Résultats de la recherche

1. Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1997 winter and 1997/98 pup-rearing season

   were from adult females, a much higher proportion than in previous years. The number of entanglements ... entanglements in packaging bands was higher than recent years in both summer and winter. Only one seal sustained ... . Only seven seals were observed entangled in the winter, a drop of 59% from 1996. Four of these records ... in the summer was the lowest recorded to date, being 52% lower than in 1996/97. The percentage of ...

   Meeting Document : SC-CAMLR-XVII/BG/11 : Auteur(s): Delegation of the United Kingdom

2. 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

   , dominated in recent years by the 1987 year class (1 year olds in 1988), was quite robust, despite the use of ... Falklands Protector in January 1992. Breakdown in the credibility of the VPA results in most recent years is ... . gunnari population in Subarea 48.3 at WG-FSA-91 using VPA, attempts were made to re-work the analysis ... various combinations of survey and cpue indices for tuning. According to the VPA the population in 1991/92 ...

   Meeting Document : WG-FSA-92/27 : Auteur(s): G. Parkes (United Kingdom)

3. DEVELOPMENT OF RECOVERY PLANS FOR DEPLETED TOOTHFISH STOCKS IN THE INDIAN OCEAN SECTOR OF THE SOUTHERN OCEAN

   years and then two years later. The surveys should have only low catches in order to not impede recovery ... . The surveys should involve a mark-recapture program, estimation of catch rates in the main grounds for ... and J.P. McKinlay (Australia) Title:  DEVELOPMENT OF RECOVERY PLANS FOR DEPLETED TOOTHFISH STOCKS IN ... trajectories indicate it is likely that it will be at least 5 years before it is sufficiently low risk to ...

   Meeting Document : WG-FSA-09/44 : Auteur(s): D.C. Welsford, A.J. Constable and J.P. McKinlay (Australia)

4. Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)

   of Sodruzhestvo. E.superba growth rate ranges from 0.126- 0.133 mm per day in the first year 0f life ... to 0.028-0.041 mm per day in the fifth year under condition that E.superba grows 180 days per year ... , duration of E.superba life cycle somewhat exceeds 5 years in the Sea of Cosmonauts and 6 years in the Sea ... Abstract:  The materials on Euphausia superba biological state and size composition in the Indian ...

   Meeting Document : WG-KRILL-93/45 : Auteur(s): E.A. Pakhomov (Ukraine)

5. An analysis of early change in the blubber thickness of minke whales as an indicator of krill availability

   . Comparison based on the difference between the thickness in December in successive years was proved valid, by ... Abstract:  Data on blubber thickness measured on 26,751 minke whales caught in the IWC Areas III ... significant relation were detected between blubber thickness and body length in both mature males and pregnant ... for these factors, considerable yearly variations were shown in the thickness in December, in which 12 ...

   Meeting Document : WG-CEMP-87/18 : Auteur(s): Y. Shimadzu (USA)

6. Research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan

   Abstract:  South Africa and Japan made the next season’s (2017/18) research plan in Subarea 48.6 ... on 10 th May, 2017. The estimated median stock size in research block 48.6_2, 48.6_3, and 48.6_4 was ... 5657.54, 5162.26, and 8211.25 tonnes, respectively, in Chapman method considering tags released in the ... . The estimated median stock size in block 48.6_2, 48.6_3, and 48.6_4 was 801.17, 124.71, and 981.91 ...

   Meeting Document : WG-SAM-17/03 : Auteur(s): Delegations of Japan and South Africa

7. Status of the krill stock around Elephant Island in 1991/92 and 1992/93

   Abstract:  Krill stock composition and distribution patterns in the vicinity of Elephant Island ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... . The length frequency distributions and maturity stage composition reflected relatively good year class ... success from the 1990/91 spawning season but poor success from 1991/92. Year class success from these and ...

   Meeting Document : WG-KRILL-93/08 : Auteur(s): V. Loeb (USA) and V. Siegel (Germany)

8. Has krill fishing the potential to adversely affect recruitment in Antarctic notothenioid fishes?

   Abstract:  A few years after krill (Euphausia superba) fishing had started in 1972/73, it became ... 25 years later WG-FSA is still not in the position to estimate the amount of fish by-catch reliably ... by-catch in fisheries targeting krill. The species composition of fish by-catch in krill fisheries is ... well-known from Polish investigations in the late 1970s and the 1980s and from Japanese, Ukrainian, and ...

   Meeting Document : WG-FSA-14/66 : Auteur(s): K.-H. Kock (Germany) and C.D. Jones (USA)

9. The Continuous Plankton Recorder in the Southern Ocean: a comparative analysis of zooplankton communities sampled by the CPR and vertical net hauls along 140°E

   each of 19 stations: 0–20, 20–50, 50–100 and 100–150 m. A Continuous Plankton Recorder (CPR) was ... . Zooplankton in the top 150 m of the water column demonstrated strong, small-scale, vertical distribution ... variation in abundance between NORPAC depth zones (average = 82 ± 47 individuals m–3), while abundance was ... substantially higher in the CPR samples (average = 144 ± 103 individuals m–3), despite it under-sampling fast ...

   Meeting Document : WS-BSO-07/P5 : Auteur(s): Hunt, B.P.V and G. Hosie

10. Towards a strategic framework for assessing uncertainty in ecosystem dynamics models: objectives are sensitive too

    candidate feedback management approaches for the Antarctic krill fishery in the southern Drake Passage and ... advice each required values for 2,311 distinct inputs. In the absence of guidance about management ... reference points, the modellers provided advice in terms of 41 illustrative reference points intended to ... . There is a global need to develop strategic frameworks for assessing uncertainty in ecosystem dynamics ...

    Meeting Document : WG-EMM-12/20 Rev. 1 : Auteur(s): S. Hill and J. Matthews (United Kingdom)

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