Résultats de la recherche

1. Modelling catch and effort data using generalised linear models with random cruise effects: trawl fishery for mackerel icefish (Champsocephalus gunnari) in CAMLR Area 58.5.2

   models (GLMMs) including data analytic methods for examining the appropriateness of model structure and ... parameter values was presented in WG-FSA-SAM 03-12 using Dissostichus eleginoides in Subarea 48.3 of the ... CAMLR area as an example dataset. The application of these procedures to trawl catches of ... Champsocephalus gunnari in Subarea 58.5.2 is described. For the trawl catch and effort data it was found the ...

   Meeting Document : WG-FSA-03/35 : Auteur(s): S.G. Candy (Australia)

2. Age-at-length of Patagonian toothfish from South Georgia

   Abstract:  To provide an age-length key for use in modelling the age structure of the Patagonian ... toothfish stock around South Georgia, we used otoliths to estimate the age of a sample of 264 Patagonian ... toothfish (Dissostichus eleginoides) captured in the longline fishery. We used a thin section grinding ... machine to reveal a transverse plane through the otolith nucleus and between crenellations. A single ...

   Meeting Document : WG-FSA-02/75 : Auteur(s): J. Ashford, M. Belchier, C. Jones and S. Bobko

3. SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION

   Abstract:  The diet of mackerel icefish was investigated from stomachs of 828 fish caught on the ... South Georgia and Shag Rocks shelves in January 2009. The results show that the diet of this normally ... krill-dependent species was dominated by the hyperiid amphipod Themisto gaudichaudii (92 % IRI) and was ... low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006. The ...

   Meeting Document : WG-EMM-09/27 : Auteur(s): M.A. Collins and C.E. Main (United Kingdom)

4. Preliminary results from CEMP monitoring of Antarctic fur seals, chinstrap penguins and macaroni penguins at Bouvetøya 1996/97

   was established at the CEMP site, Nyrøysa, on the western coast of the island. Species included in the ... Ocean, during an expedition to the island from 9 December 1996 to 22 February 1997. A research station ... monitoring program are the Chinstrap Penguin, Macaroni Penguin and Antarctic Fur Seal. Preliminary results ... from the first season of CEMP monitoring (parameters A3, A4, A5, A6, A8, A9, C1 and C2) are reported ...

   Meeting Document : WG-EMM-97/20 : Auteur(s): Hofmeyr, G.J.G., Dyer, B.M., Næstvold, A., Mehlum, F., Gjertz, I., Bakken, V., Isaksen, K., Huyser, O.

5. Age-length key for Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994

   Abstract:  An age-length key was prepared for Champsocephalus gunnari from the Subarea 48.3, based ... on the readings of otoliths randomly collected during the R/V Holmberg survey in Feb/Mar 1994. Small ... and medium sized fish (total length 12-33 cm) constituted the bulk of the samples (93%), while larger ... Rocks, a large concentration of fish belonging to age groups 2 (90%) and 3 (10%) was found. The length ...

   Meeting Document : WG-FSA-94/11 : Auteur(s): E. Barrera-Oro, E. Marschoff and R. Casaux (Argentina)

6. Review of CCAMLR’s partnership in FIRMS

   provide high-quality global information on the monitoring and management of marine fishery resources ... . CCAMLR joined this partnership in 2006 and has contributed fishery fact sheets on the exploratory ... are planned. In 2009, the Commission requested that a review of future collaboration with FIRMS be ... contributed to the objectives of Article IX and XXIII of the Convention through the further development of ...

   Meeting Document : CCAMLR-XXIX/18 : Auteur(s): Secretariat

7. Using tag-recapture data to estimate catchability of a series of random stratified trawl surveys

   Abstract:  For the 2014 assessment of Patagonian toothfish (Dissostichus eleginoides) around the ... Heard Island and McDonald Islands (HIMI) in Division 58.5.2, a prior for catchability q of the random ... stratified trawl survey (RSTS) was estimated by comparing abundance estimates of the survey with abundance ... estimates calculated from the tag-recaptures data on the main trawl ground. Here, we use simulations to ...

   Meeting Document : WG-SAM-15/34 : Auteur(s): W. de la Mare, P. Ziegler and D. Welsford (Australia)

8. Interdiction de prélèvement des ailerons de requins capturés dans la zone de la convention de la CCAMLR

   Abstract:  Conservation Measure 32-18 on the conservation of sharks prohibits “directed fishing on ... shark species in the Convention Area…” and calls for the live release of incidentally-caught sharks ... where possible.  The measure is, however, silent on the practice of shark finning should incidental ... catches of sharks occur. The delegations of Argentina, Australia, Brazil, Chile, European Union, Namibia ...

   Meeting Document : CCAMLR-XXXV/23 : Auteur(s): Delegations of Argentina, Australia, Brazil, Chile, the European Union, Namibia, South Africa, Uruguay and the USA

9. A study on calibration for commercial echosounder using bottom backscattering strength in Antarctic

   fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... calibration was to analyze the difference between the bottom backscattering strength of the commercial ... echosounder (i.e. ES70) and the scientific echosounder (i.e. EK60) at some transects designated by CCAMLR ... . 38kHz and 120kHz were used for the calibration, and krill swarm signals, obtained from multi frequencies ...

   Meeting Document : SG-ASAM-17/P01 : Auteur(s): S.-G. Choi, H. Lee, K. Lee and J. Lee

10. Population and survival trends of wandering albatrosses (Diomedea exulans) breeding on Macquarie Island

    declines and the Macquarie Island breeding populations is particularly vulnerable as it comprises fewer ... than 20 breeding pairs. Most breeding birds in this small population are banded and monitoring over the ... last 40 years has increasingly focused on their conservation status. Demographic trends of the ... extinction levels in the mid 1980’s. Underlying this decline was a significant decrease in juvenile survival ...

    Meeting Document : WG-FSA-04/50 : Auteur(s): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia)

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