Résultats de la recherche

1. Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem

   year class strength, timing of immigration, fluctuations in growth rates and dynamic predator selective ... important aspect of the variation is fluctuation in the abundance of krill, the major prey item of many of ... the higher predators. Direct impacts of variability in the large-scale physical environment, such as ... changes in ocean circulation, have been suggested as the main factor generating the observed fluctuations ...

   Meeting Document : WG-EMM-01/53 : Auteur(s): E. Murphy and K. Reid (United Kingdom)

2. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.3a

   in the last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each ... block in such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... sizes turned out to be larger in many blocks and smaller in a few blocks over the data poor-fisheries ... block, in order to promote successful stock assessment. The separation rule was one of the major ...

   Meeting Document : WG-FSA-13/40 : Auteur(s): Delegation of Japan

3. Analysis of variability of krill size and fish by-catch in Japanese krill fishery based on scientific observer data

   cluster units (i.e., year, sub-area, vessel, cruise, and haul) based on a state-space model, separating ... biological process error in the population dynamics from fishery process as observation error. In both krill ... -areas, and vessels. The potent interaction effect between year and sub-area suggests large spatio ... -temporal variability in size structure of krill population, which is presumably derived from large ...

   Meeting Document : WG-EMM-12/68 : Auteur(s): T. Okuda and M. Kiyota (Japan)

4. Preliminary analyses of an ectoparasite Eubrachiella antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea

   antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea. New Zealand Ministry ... fins and in the buccal cavity of 621 large D. mawsoni (mostly 120-150 cm). Up to five D. mawsoni per ... set were examined for parasites in Small Scale Research Units (SSRUs) 88.1C, 88.2E and 88.2F; and two ... fish per set in SSRUs 88.1H- 88.1J. Up to 15 E. antarctica, one from each of the first fifteen sets in ...

   Meeting Document : WG-FSA-06/28 : Auteur(s): P.J. Smith, A. McKenzie and L. Tubbs (New Zealand)

5. Monitoring marine debris and its impact on marine living resources in Antarctic waters

   -related debris. During recent years surveys of beached marine debris have been conducted in accordance ... of Antarctic Marine Living Resources (CCAMLR) in response to a request from CEP-IV for information on ... actions taken by CCAMLR on marine debris from fishing vessels, especially in relation to compliance with ... level of marine debris and its impact on marine living resources in Antarctic waters. Long-term programs ...

   Meeting Document : SC-CAMLR-XX/BG/16 : Auteur(s): Secretariat

6. Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)

   the fact that in the 1986/1987 season the recruitment in the first age group was not less than long ... -term mean (5947 million specimens), the abundance of N. guntheri in 1987/77 was 152 thousand tons. Then ... the following TAC values were obtained: a) Fishing intensity (F) in the predicted period is equal to ... ) Fishing intensity in the predicted period is at the level of 1987/88; c) Fishing intensity in the ...

   Meeting Document : WG-FSA-88/33 : Auteur(s): R. Borodin and K. Shust (USSR)

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

   management advice 8.1 Conservation measures 20. The exploratory fishery for Dissostichus spp. in ... (legal and IUU) and assumed the biomass in 2010 to be 20% of B0. An estimate of B0 was then calculated ... assumed the status at the end of the bulk of IUU fishing (in 2002) was 20% of B0. B0 was then back ... results reported in WG-FSA-10/48. Ages of 214 otoliths (of 3 013 fish sampled) ranged from 5 to 50 years ...

   Document : Site Section: Publications

8. Preliminary assessment models of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season

   model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... in a similar, though slightly higher, estimate of initial and current biomass as the 2005 base case ... ‘all vessels’ tagging data resulted in a much more optimistic assessment, but was due to the increased ... numbers scanned, but smaller increase in the reported numbers recaptured. It is likely that this ...

   Meeting Document : WG-FSA-SAM-06/11 : Auteur(s): Dunn, A. & Hanchet, S.M.

9. Spatio–temporal dynamics in maturation and spawning of Patagonian toothfish Dissostichus eleginoides on the subantarctic Kerguelen Plateau

   eleginoides in the Heard Island and McDonald Islands (HIMI) fishery on the Kerguelen Plateau in the Indian ... mature females did not spawn every year. Age-at-maturity estimates, obtained based on the assumption that ... both sexes. However, the magnitude of this temporal variation in age-at-maturity varied between gear ... , D. Welsford, J. McIvor, B. Farmer and E.Woodcock Title:  Spatio–temporal dynamics in maturation and ...

   Meeting Document : WG-FSA-17/P04 : Auteur(s): P. Yates, P. Ziegler, D. Welsford, J. McIvor, B. Farmer and E.Woodcock

10. Winter distribution of chinstrap penguins from two breeding sites in the South Shetland Islands of Antarctica

    Islands until its signal was lost at 580 30’ S, 360 10’ W in late July, over 1300 km from its breeding ... eight chinstrap penguins known to breed at one of two colonies in the South Shetland Islands, Antarctic ... Peninsula region during the 2000 and 2004 austral winters. Six birds from a breeding site in Admiralty Bay ... that 4 of the birds instrumented in the 2000 winter, two from each colony, foraged largely on the shelf ...

    Meeting Document : WG-EMM-06/17 : Auteur(s): W.Z. Trivelpiece, S. Buckelew, C. Reiss and S.G. Trivelpiece (USA)

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