Résultats de la recherche

1. Towards an assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea: data from predators

   exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ... seal and is probably taken in significant quantities by several other Southern Ocean vertebrate ... predators. Estimated annual consumption by known predators in the Scotia Sea is 326098- 330642 tonnes, 94 ... 308016 tonnes per year. The proportion of total annual production of Martialia taken by predators cannot ...

   Meeting Document : SC-CAMLR-IX/BG/13 : Auteur(s): Delegation of United Kingdom

2. Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)

   Abstract:  Grenadiers (Macrourus spp.) are the main bycatch species in the exploratory longline ... fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ... targets was similar to that predicted based on the expected size range of grenadiers. Variability in ... vessels in SSRU 88.1I. The next step will be to apply to these methods to a wider set of data across the ...

   Meeting Document : WG-FSA-14/62 : Auteur(s): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)

3. Spatial and temporal variability in foraging patterns of krill predators at Signy Island and South Georgia

   . In a system where the distribution and abundance of prey is highly variable, foraging behaviour must ... be highly adaptable. In this paper we consider the behaviour of seal and seabird krill-dependent ... described as an example of how they could be used in other locations where the fishery operates. Author(s ... Kingdom) Title:  Spatial and temporal variability in foraging patterns of krill predators at Signy Island ...

   Meeting Document : WG-EMM-02/33 Text : Auteur(s): P.N. Trathan, J.L. Tanton, A.S. Lynnes, M.J. Jessopp, H. Peat, K. Reid and J.P. Croxall (United Kingdom)

4. The spawning dynamics of Patagonian toothfish in the Australian EEZ at Heard Island and the McDonald Islands and their importance to spawning activity across the Kerguelen Plateau

   Abstract:  In 2011, AAD, the Fisheries Research and Development Corporation and Australian fishing ... collected in 2011. This data confirms that toothfish spawn between July and August across a large ... animals, and that even large mature fish may not spawn every year. As a result, the conventional method of ... Patagonian toothfish in the Australian EEZ at Heard Island and the McDonald Islands and their importance to ...

   Meeting Document : WG-FSA-12/P08 : Auteur(s): D.C. Welsford, J. McIvor, S.G. Candy and G.B. Nowara

5. 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)

6. 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

7. 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)

8. 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)

9. 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

10. 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)

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