Résultats de la recherche

1. 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 ... recovery strategy for Patagonian toothfish on Ob and Lena Banks. Author(s):  D.C. Welsford, A.J. Constable ... and commercial fishing and it is likely that they are depleted below the threshold for CCAMLR ... fisheries. An updated assessment of that status the stock at BANZARE Bank using data from the recent seasons ...

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

2. Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground

   programmed in R, based on alternative ordinary differential equations (ODE) for within-year population ... were obtained using proportions-at-length and fishery and year specific age length keys (ALKs) for ... of the properties of these two models for estimation of M used simulation. In application to the data ... the model was or was not conditioned on the total numbers caught in each year. Author(s):  S. Candy, D ...

   Meeting Document : WG-FSA-10/41 : Auteur(s): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (Australia)

3. Direct ageing of Antarctic krill (Euphausia superba) – potential utility of eyestalk sections for age determination

   ) and fall on the line for two and three year old krill. If validated, the technique should allow the ... Abstract:  We outline a method for the direct determination of age in Antarctic krill (Euphausia ... Antarctic Division and examined using the methods outlined in (Kilada et al. 2012). Two analyses are ... seasons.  Marks consistent with annuli observed in laboratory raised krill were observed. Length at age ...

   Meeting Document : WG-EMM-15/45 : Auteur(s): C. Reiss (USA), R. Kilada (Canada) and S. Kawaguchi (Australia)

4. Ecosystem modelling for the Antarctic krill fishery

   the Antarctic ecosystem. This species serves as prey for many organisms in the ecosystem and has also ... been the target of an small industrial fishery since the mid 1970s. New quotas have recently been set ... well as competitors for a common resource. In this context we aim to investigate whether the krill ... fishery and the top predators are competing for krill biomass. This is a cooperative pilot project led by ...

   Meeting Document : WG-EMM-01/65 : Auteur(s): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)

5. Are penguins and seals in competition for Antarctic krill at South Georgia?

   1989 and 2000. Foraging ranges of the two species showed considerable overlap in both years but the ... greater competition for the prey of macaroni penguins leading to the decline in their population. We use a ... ) satellite-tracking data to investigate the spatial separation of these two species whilst at sea during the ... prevalence of krill in the diet of the two predators differed with less krill in the diet of macaroni ...

   Meeting Document : WG-EMM-01/22 : Auteur(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, I.J. Staniland, K. Reid and A.S. Brierley (United Kingdom)

6. Development of methods relevant to feedback management (FBM) for the krill fishery

   Abstract:  The primary objective for this project is to develop knowledge on the marine ... environment essential for the implementation of a Feed-Back Management (FBM) system. In terms of FBM, Marine ... . Thus, data supporting FBM as an integral part of the broader management strategies of the krill ... fisheries within Domain 1 are critical if the fishery is to be managed by an empirical understanding of ...

   Meeting Document : WG-EMM-18/08 : Auteur(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad

7. Draft MPA Report for the South Orkney Islands, Subarea 48.2; Part of CCAMLR MPA Planning Domain 1, Western Peninsula – South Scotia Arc

   plans and research and monitoring plans for CCAMLR MPAs. We develop a worked example of the management ... plan, research and monitoring plan and threats analysis for the South Orkney Islands southern shelf MPA ... which falls within CCAMLR MPA Planning Domain 1. We suggest that this CCAMLR MPA Report for the South ... Orkney Islands could form the basis for the MPA Report for CCAMLR MPA Planning Domain 1. We propose that ...

   Meeting Document : WG-EMM-13/10 : Auteur(s): P. Trathan and S. Grant (United Kingdom)

8. CONDITIONING SMOM USING THE AGREED CALENDAR OF OBSERVED CHANGES IN PREDATOR AND KRILL ABUNDANCE: A FURTHER STEP IN THE DEVELOPMENT OF A MANAGEMENT PROCEDURE FOR KRILL FISHERIES IN AREA 48

   reference observations for Area 48 (the SAM calendar). Results are presented for two implementations of SMOM ... agreeing the relative plausibilities (weights) for the different operating models. An outline of suggested ... , one with the time series of krill abundance fixed on input, and the other incorporating an explicit ... -predator-fishery dynamics described in an accompanying paper is conditioned using the WG-SAM set of ...

   Meeting Document : WG-EMM-08/44 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)

9. Are penguins and seals in competition for Antarctic krill at South Georgia?

   population during their breeding season. For explaining the opposing population trends of the two species ... 1989 and 2000. Foraging ranges of the two species showed considerable overlap in both years but the ... population at South Georgia may have resulted in greater competition for the prey of macaroni penguins ... spatial separation of the Bird Island populations of these two species whilst at sea during the breeding ...

   Meeting Document : WG-EMM-02/22 : Auteur(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, K. Reid, U.J. Staniland and A.S. Brierley (United Kingdom)

10. Integrated weight longlines: potential for reduction of skate by catch in demersal longline fisheries

    weight longlines (IW) in a demersal longline fishery for effects on skate bycatch. Trials took place on ... two vessels targeting Pacific cod (Gadus macrocephalus) over a five-month period in the Bering Sea ... ) Title:  Integrated weight longlines: potential for reduction of skate by catch in demersal longline ... Abstract:  We analyzed data collected during 2005 seabird mitigation experiments on integrated ...

    Meeting Document : WG-FSA-07/51 : Auteur(s): K. Dietrich and E. Melvin (USA)

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