Résultats de la recherche

1. Hydrography and acoustic biomass estimates of Antarctic krill (Euphausia superba) near the South Shetland Islands, Antarctica, during January 2000: preliminary results

   Profiler (ADCP) were deployed to understand the physical structure of the water column at 11 stations. The ... presence of ‘Winter Water’ in mid layer and Circumpolar Deep Water at greater depths. Offshore water and ... Abstract:  To estimate the abundance and distribution of Antarctic krill (Euphausia superba) in ... the vicinity of South Shetland Islands (SSI), a hydroacoustic/oceanographic survey was conducted by ...

   Meeting Document : WG-EMM-00/52 : Auteur(s): D. Kang, Y. Lee, H.-C. Shin, W. Lee and S. Kim (Republic of Korea)

2. Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)

   (east of longitude 180°), estimated during late spring and at the beginning of the austral summer in ... observations were done at the end of December and in January in ice-free water. During the first part of echo ... survey (in the end of December and at beginning of January) in an area of 13000 nm2 a total biomass of ... density around 39 t/nm2). The highest value of biomass density (1041 t/nm2) was found in January at ...

   Meeting Document : WG-EMM-97/53 : Auteur(s): Kalinowski, J., Azzali, M.

3. The foraging range of Adelie penguins – implications for CEMP and interactions with the krill fishery

   Abstract:  This paper presents a summary of the foraging locations of the Ad6lie penguin at 7 ... not occur at these sites in normal ice years. It is suggested that an understanding of the potential ... widely spaced locations along the coast of Eastern Antarctica between 55°E near Enderby Land and 175°E in ... and return with krill. The pattern of foraging is similar between sites. The potential for overlap ...

   Meeting Document : WG-EMM-96/69 : Auteur(s): Rodary, D., Thomson, R., Tremont, R., Lawless, R., Gardner, H., Wienecke, B., Clarke, J.R., Kerry, K.R., Corsolini, S., Eberhard, S.

4. TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA

   prey) will vary between different life history stages at different times of the year in different areas ... at all. Diver observations suggest that seals may feed selectively on only parts of toothfish so that ... inconclusive. We recommend further research using stable isotope analysis of blood samples from seals not at ... the breeding colonies, and samples of muscle or other slower-turnover tissue of seals at the breeding ...

   Meeting Document : WG-EMM-08/43 : Auteur(s): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)

5. Is our attempt to estimate biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited

   . The species has been heavily fished at the beginning of the 1970’s. The closure of the fishery for ... are more or less evenly distributed over the area at the time of the survey. This assumption is ... Abstract:  Notothenia rossii was the first target species of the fishery in the Southern Ocean ... this species was one of the first conservation measures CCAMLR adopted in 1985. Fish biomass within a ...

   Meeting Document : WG-FSA-03/12 : Auteur(s): K.-H. Kock (Germany), M. Belchier (United Kingdom) and C.D. Jones (USA)

6. Preliminary assessment of Patagonian toothfish in Subarea 48.3

   terminal assessment year continues to be estimated at around 54% of virgin biomass, consistent with the ... Abstract:  A preliminary assessment of toothfish (Dissostichus eleginoides.) in Subarea 48.3 is ... presented. The assessment results from this year’s analyses are very similar to those of 2011. SSB in the ... and to catch at age observations and achieves this by assuming a different selection pattern for the ...

   Meeting Document : WG-FSA-13/30 : Auteur(s): R. Scott (United Kingdom)

7. Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering

   Abstract:  The performance of echo sounder system is critical for using acoustic data collected ... and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to ... calibration. The largest inter-annual difference of the mean value of the maximum seabed backscattering (S v ... , dB) for single ping were less than 1.0 dB with 0.35 dB and 0.78 dB at 120 kHz and 38 kHz ...

   Meeting Document : SG-ASAM-18/06 : Auteur(s): X. Wang, X. Yu and X. Zhao

8. 2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has ... Abstract:  The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and ... 48.3 are incorporated and lead to less optimistic results. The resource is estimated to be at about 40 ... % of its average pre-exploitation level in terms of spawning biomass. It is suggested that it would be ...

   Meeting Document : WG-FSA-06/58 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)

9. Stock assessment of D. eleginoides in Subarea 48.3 using dynamic production models

   estimates by years of fishing. Both models showed that the D. eleginoides stock status at the initial period ... of intensive fishery was at the level of 22-24 thousand tons. In 1989-1990 stock size increased (to ... in subarea 48.3. This type of the models differ from the models currently used by CCAMLR Working ... mortality, age selectivity, recruitment estimates, mean weight at age) In the calculations with DPM (with ...

   Meeting Document : WG-FSA-02/78 : Auteur(s): P.S. Gasiukov and R.S. Dorovskich (Russia)

10. Identification of Amblyraja species in the longline fishery in Subarea 48.3 – CCAMLR

    A.georgiana. Male A. sp.anon attain 50% maturity at a total length of 97cm, 13 cm greater than the length at ... captures of A.sp.anon were found at depths >1000m, where 85% of A.georgiana were caught in depths ... 50% maturity for A.georgiana. Comparisons of colour and patternation were found to be consistent ... proportionally longer claspers to total length (2.77% difference between averages) than male A.sp.anon. 94% of ...

    Meeting Document : WG-FSA-02/54 : Auteur(s): M. Endicott (United Kingdom), L.J.V. Compagno (South Africa) and D.J. Agnew (United Kingdom)

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