Résultats de la recherche

1. Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation

   and video footage from several Antarctic krill were carried out to determine the effect of animal ... Classification (CMVC) approach, using generic and animal-specific theoretical and empirical model spaces. The ... animal-specific empirical model space was best able to invert for angle of orientation. The CMVC ...

   Meeting Document : WG-EMM-99/41 : Auteur(s): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)

2. Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)

   observed in the length density represent different age cohorts separated by one year. File:  01ashford.pdf ... estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... + 14+ 20 4 25 2 30 12 1 35 102 7 40 6 33 45 1 65 3 50 5 3 55 7 1 60 2 9 3 65 2 5 1 70 2 1 1 70+ 1 1 ... year’s translucent zone). Total length (cm) 10 20 30 40 ... 50 60 70 80 90 Fr eq ue nc y 40 30 20 10 0 ... taken off South Georgia in January 2000. Age 0+ Age 1+ Age 2+ Age 3+ Age 4+ 40 30 20 10 0 40 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Auteur(s): Ashford, J., C. Jones, S. Bobko and I. Everson

3. Products for human consumption from krill (Euphausia superba)

   months at-30°C and one month at-20°C. Dried krill of good quality could be prepared by blanching krill in ... fish burger, it gave a bitter after taste at 10% level and bitter taste at 20% level or above. The ...

   Meeting Document : WG-EMM-98/41 : Auteur(s): J. Joseph, V. Muraleedharan, R. Thankamma and C.N. Ravishankar (India)

4. Fishery Report: Closed fishery for Dissostichus spp. in Divisions 58.4.4a and 58.4.4b

   year (or years) to recapture the tagged fish. 29. The Working Group considered that if sufficient ... the Scientific Committee and WG-FSA. 8.2 Management advice 20. In 2007/08, one Japanese-flagged ... survey Dissostichus spp. in 2009/10 as part of a 3–5 year tagging experiment. 24. Dr K. Taki (Japan ... used. A total of 117 research hauls are allocated on a 10-minute latitude  20-minute longitude grid ...

   Document : Site Section: Publications

5. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2016/17

   survey were required to reliably estimate relative year class strengths. Year class strengths were ... estimated from 2003 to 2011 and showed two strong year classes and two weak year classes. Overall, model ... . This yield is higher than that specified for 2018 in CM 91-05, which states that “the total catch limit ... from the Scientific Committee in 2017, 2018 and 2019” (CM 91-05 paragraph 28 (i)). As the precautionary ...

   Meeting Document : WG-FSA-17/37 Rev. 1 : Auteur(s): S. Mormede

6. Bacteria and detritus: Trophic modelling of the Ross Sea

   A M J a 0 5 10 15 20 25 30 35 40 La bi le D O C (g C m -2 ) J A S ... compartments between years. The vast majority of ice is assumed to melt each year so that the material in the ... sea-ice at that time of year is transferred into the water column. It is assumed that the living ... % to heterotrophic microplankton (20–200 µm) and 50% to heterotrophic flagellates (2–20 µm); sea ice ...

   Document : Site Section: Publications

7. Effects of orientation on acoustic scattering from Antarctic krill at 120 kHz

   collected per animal. Orientation data were recorded on video. The acoustic data were analyzed and target ... animal orientation. Use of these scattering patterns with orientation data from shipboard studies of E ... . superb a DWBA scattering model is proposed that is scalable by animal length. With good orientation ...

   Meeting Document : WG-EMM-99/42 : Auteur(s): D.E. McGehee (USA), R.L. O’Driscoll (New Zealand) and L.V. Martin Traykovski (USA)

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

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

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

9. Managing fisheries to conserve the Antarctic marine ecosystem: practical implementation of the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR)

   management measures can be adjusted in sufficient time to ensure the objectives are met. Attention is given ... decimated in the first two years of the fishery following catches of about 500,000t. Two other species have ...

   Meeting Document : SC-CAMLR-XVIII/BG/26

10. Evaluation of de la Mare’s composite standardised index for generating a simple time-series summary of many long-term datasets on Antarctic predators: consequences of missing values and criteria for inclusion of predator parameters

    datasets on Antarctic predators. The value of the index in a given year is dependent on the specific ... parameters present in that year. In this respect, the robustness of the index is dependent on that subset of ... parameters being representative of all the parameters for that year. Clearly, this will depend on how ... parameters and preferably with correlations greater than 0.3. If this criterion is met then these results ...

    Meeting Document : WG-EMM-98/45 : Auteur(s): A. Constable (Australia)

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