Résultats de la recherche

1. REVIEW OF CCAMLR ACTIVITIES ON MONITORING MARINE DEBRIS IN THE CONVENTION AREA

   Abstract:  CCAMLR Members monitor beached debris, entanglement of marine mammals, marine debris ... associated with seabird colonies and animals contaminated with hydrocarbons at a number of sites, primarily ... in Area 48. Overall non-fishing debris items (mostly packaging items) have made up the majority of ... debris reported from monitoring sites. Relatively large amounts of fishing items have been reported at ...

   Meeting Document : WG-FSA-08/09 : Auteur(s): Secretariat

2. By-catch of juvenile Antarctic fish from krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992

   krill fishing by the BAT GrigOly Kovtun in the region of the South Georgia Islands during the period May ... larseni. The frequency of occurrence of juvenile fish was 18.2% when considering all krill tows and 45.5 ... % when only tows made in shelf waters were considered. Juvenile fish abundance, normalised to 1 t of ... krill, ranged from 700 to 18 900 individuals. In the case of C.gunnari, average values were 966±225 ind ...

   Meeting Document : WG-FSA-93/8 Rev. 1 : Auteur(s): E.A. Pakhomov and S.A. Pankratov (Ukraine)

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

   Abstract:  Data on age composition of catches and fishing efforts for 1979/80- 1987/88 were used ... to analyse N. guntheri stock status. On the basis of these data using VPA method with different ... (Atlantic Fisheries Research Institute data). To estimate terminal value of instantaneous fishing ... coefficient (F) different adjustments were used. Long-term mean of F, Gamma method, Pope and Shepherd method ...

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

4. A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments

   Abstract:  Length frequency distributions (LFD) of catch collected as a random sub-sample from ... /or gear specific selectivity. A distribution-free model of LFD is described which is fitted to the ... set of length quantiles L for a predetermined set of corresponding probabilities P (in this instance ... 0.05, 0.1 to 0.9 in 0.1 increments, and 0.95), constructed from individual length measurements of ...

   Meeting Document : WG-SAM-13/18 : Auteur(s): S. Candy, P. Ziegler and D. Welsford (Australia)

5. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.2

   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 ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... block, in order to promote successful stock assessment. We tentatively examined the degree of coverage ...

   Meeting Document : WG-FSA-13/39 : Auteur(s): Delegation of Japan

6. Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal

   ecosystems through local predation. Here we report on the successful use of micro geolocation logging sensor ... tags to track the movements, and activity, of four leopard seals for trips of between 142-446 days ... advance in our limited knowledge of leopard seals. We show the longest periods of tracking of leopard ... island of South Georgia. It appears that these tracked animals migrate in a directed manner towards Bird ...

   Meeting Document : WG-EMM-18/P09 : Auteur(s): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada

7. Reproductive ecology of Antarctic toothfish, Dissostichus mawsoni (Norman, 1937) (Actinopterygii: Nototheniidae), in the Antarctic waters (SSRUs 58 and 88)

   Abstract:  Total numbers of Antarctic toothfish collected in the CCAMLR Conservation Zone were 600 ... fish which consist of 306 fish from the 58 area and 294 fish from the 88 area during February through ... higher total length. The ratio of female among the 857 specimens of Antarctic toothfish collected from ... was found to be 0.53, and displayed the tendency of increase with increase in the total length 140 cm ...

   Meeting Document : WG-FSA-18/65 : Auteur(s): J.-W. Kim, S.-G. Choi, S. Chung and D.H. An

8. Report of the UK Groundfish Survey at South Georgia (CCAMLR Subarea 48.3) in January/February 2019

   Abstract:  The UK undertook a bottom trawl survey of CCAMLR sub-Area 48.3 on the FV Sil between ... the 27thth January and 5th February 2019. A total of 73 random and representative hauls were completed ... covering depths of between 108 and 352m. Overall biomass of mackerel icefish, Chamsocephalus gunnari, was ... calculated at 50,897 tonnes with a lower 1-sided 95% interval estimate of 30,288 tonnes. This is lower than ...

   Meeting Document : WG-FSA-2019/20 : Auteur(s): S. Gregory, P. Hollyman, T. Earl, A. Clement, J. Visagie, L. Featherstone and M. Belchier

9. Information on krill in reports from the CCAMLR scheme of international observation and its utility for management

   Abstract:  A preliminary analysis of the 32 reports submitted under the CCAMLR Scheme of ... International Observation revealed that there are a number of inconsistencies in the information being reported ... . Few reports have been submitted each year with a maximum of eight submitted in 2005. Very little ... area 48.3. Information on fishing gear suggests great differences between vessels. Aspects of ...

   Meeting Document : WG-EMM-07/22 : Auteur(s): J. Foster, S. Nicol and S. Kawaguchi (Australia)

10. Effects of variability in prey abundance on reproduction and foraging in chinstrap penguins (Pygoscelis antarctica)

    Abstract:  Life-history theory predicts that adults of long-lived species such as seabirds should ... offspring provisioning, the most energetically costly component of seabird parental care, adults need to ... contend with large interannual fluctuations in prey availability and hence the cost of chick provisioning ... foraging effort. Using ship-based hydroacoustic assessment of prey, time-depth recorders attached to ...

    Meeting Document : WG-EMM-06/P6 : Auteur(s): D.A. Croll, D.A. Demer, R.P. Hewitt, J.K. Jansen, M.E. Goebel and B.R. Tershy (USA)

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