Résultats de la recherche

1. Managing the Ross Sea toothfish fisheries – A response to the consultation responses (COMM CIRC 18/39)

   monitoring, and the calculation of closure dates, for the 2018/19 season in the Ross Sea: The Secretariat ... Abstract:  In 2017 the fishery in the Northern Area of the Ross Sea Area 88.1 was opened for one ... day, closed for 2 days, and then re-opened, a situation that was criticised by some Members. The ... Secretariat catch and effort monitoring procedure) and proposes a revised approach for catch and effort ...

   Meeting Document : WG-FSA-18/07 : Auteur(s): CCAMLR Secretariat

2. A drone-based Antarctic fur seal (Arctocephalus gazella) census of the St. Telmo Islands, South Shetland Archipelago

   to obtain in remote polar environments. The standard approach for income breeding pinnipeds, such as ... last decade unmanned aerial systems (UAS), or drones, have become indispensable tools for wildlife ... Telmo Islands during the 2018-19 field season. The APH-28 provided a minimally-invasive, robust, and ... 333, which represents a 79% reduction since the most recent survey in 2008, and a 90% reduction from ...

   Meeting Document : WG-EMM-2019/65 : Auteur(s): D.J. Krause and M.E. Goebel

3. Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland

   Abstract:  Over 6000 male snow crabs were tagged during a 6-year period in Conception Bay ... that 20 of these had molted once while the remainder molted twice. Two lines of evidence support this ... post- and pre-molt sizes using the combined data set for single and double molters. The method was also ... generalized to account for a quadratic relationship between post- and pre-molt size. For crabs in the size ...

   Meeting Document : WS-CRAB-93/12 : Auteur(s): D.M. Taylor and J.M. Hoenig (USA)

4. Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of the Antarctica

   Ross Dependency. Discrepancy in allelic frequency with previously published data was also found for ... differences between geographic locations or between samples collected in consequent years were observed. Our ...

   Meeting Document : WG-FSA-13/07 : Auteur(s): N.S. Mugue, A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev (Russia)

5. PREDICTING THE VULNERABILITY OF BRYOZOANS AND SPONGES TO DISTURBANCE USING LIFE-HISTORY CHARACTERISTICS

   characteristics and their relationships with physical and chemical variables were undertaken for habitat-forming ... age and a strong positive relationship between growth rate and temperature. A multiple regression ... disturbance. Demosponges showed a strong positive relationship between maximum size and age while there were ... too few data for glass sponges for robust analysis. Most sponges from the Antarctic showed no or very ...

   Meeting Document : WS-VME-09/12 : Auteur(s): Martin-Smith, K.

6. Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey

   ), as a function of the fraction of the biomass estimate which is set as the catch for a 20-year period ... et al. (1992) put forward an extension of the harvesting model of Beddington and Cooke (1983) to ... over the ranges of uncertainty for a number of model parameters. Results are provided for the ... a summer harvest. However, the imposition of an upper bound of 1.5 yr-1 on the effective annual ... biomass estimate which is set as the catch for a 20-year period. Three possible fishing seasons are ... drawn at random from pre-specified distributions for each simulation of a 20-year period of harvesting ... any year, an upper bound of 1.5 yr-l is placed on the effective annual fishing mortality for fully ... ) requested that statistics be provided for a 10- as well as a 20-year period of harvesting. Calculations ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Auteur(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew

7. CCAMLR Statistical Bulletin, Vol. 31

   Description / Abstract:  CCAMLR  Statistical Bulletin  Volume 31 is available as an interactive ... the CCAMLR fishery webpages. The data structure in these tables is the same as that used for the csv ... ‘Statistical Bulletin Menu’ tab on the welcome page (top, right). The  Bulletin  menu has tabs for the ... Bulletin The Statistical Bulletin is published annually and contains: · Catch and effort statistics for ... reported for each species of toothfish (D. eleginoides and D. mawsoni) by calendar year since 2000. The ... statistics are reported for each species of toothfish (D. eleginoides and D. mawsoni) by calendar year ... an update to Statistical Bulletin Volume 31 after review by the CCAMLR Data Services Advisory ...

   Document : Site Section: Data

8. The breeding biology and distribution of Adelie penguins: adaptations to environmental variability

   biomass of the Western Antarctic Peninsula region, and serve as focal animals for our Long Term Ecological ... Research (LTER) study of the effects of environmental variability on animal populations in the Antarctic ... Bellingshausen Seas, respectively. We propose that these pack ice areas are the wintering grounds for each ... breeding areas by Adelie penguins, following two to three years of failure at "poor" sites ...

   Meeting Document : WG-EMM-96/58 : Auteur(s): Fraser, W.R., Trivelpiece, W.Z.

9. Fishery Report: Dissostichus eleginoides Prince Edward Islands South African EEZ (Subareas 58.6 and 58.7)

   /08 21 55 69 145 0 145 2008/09 30 22 20 72 0 72 2009/101 47 22 15 84 0 84 1 Two vessels are ... a mode at approximately 60–90 cm. Figure 2: Catch-weighted length frequencies for ... , the estimated IUU catch of toothfish exceeded the reported catch for most years (SC-CAMLR-XXVI, Annex ... and 58.7. Up to seven operators have been licensed by South Africa to fish in any one year. However ...

   Document : Site Section: Publications

10. Preliminary analysis of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments on the sustainability of different harvest levels

    to size via a simple von-Bertalanffy equation in which variance in catch-at-length for a given age is ... proportional to the mean length at that age.  The model makes provision for IUU catches, insofar as this is ... .  The method includes recaptures for the year of release.  The tagging likelihood term is based on the ... Abstract:  Available catch, effort, catch-at-size and tagging data for Statistical Subarea 48.6 ...

    Meeting Document : WG-FSA-12/31 : Auteur(s): E. Thomson and M. Bergh (South Africa)

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