Résultats de la recherche

1. A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems

   should be reviewed annually to ensure that all relevant or new information has been included, appropriate ... measure in 2007 to ensure that significant adverse impacts of bottom fishing gear on Vulnerable Marine ... presence and the consequences of interaction with different types of gear, a risk-management framework is ... proposed, similar to that which has been used successfully to minimise the effects of longline fishing ... consequences of interactions of gear with VMEs can be revised. Bottom fishing gear that has been used histori ... operate, as with current by-catch measures. Note that these will only be applicable when there is a ... with different types of gear, a risk-management framework is proposed, similar to that which has been ... should be reviewed annually to ensure that all relevant or new information has been included ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Auteur(s): Martin-Smith, K

2. Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove

   was absent in the catches. These trends are consistent with those observed in scientific cruises ... means by each year are presented in Figure 1. It should be noted that these estimates have been ... , D. Ramm, J. Ashford, S. Wilhelms, T. Near, N. Gong and H. Flores. 2001. Results and standing stock ... of 24 years which began in 1983, and at Harmony Cove in the summers of 2001 to 2003. The decline in ... absent in the catches. These trends are consistent with those observed in scientifi c cruises studying ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Auteur(s): Barrera-Oro, E.R. and E.R. Marschoff

3. Geographical differences in the condition, reproductive development, sex ratio and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Subarea 88.1)

   . Dissostichus mawsoni samples from the northern part of the Ross Sea showed that this component of the ... with the southern group (in which the distribution was multimodal), showed a consistent and ... . It was noted over the 2001/02 and 2002/03 seasons, that with the arrival of polar darkness for ... detail can currently be extracted from this information with any statistical confidence. However ... given fishing season. In this context, the argument would be that some proportion of the accessible ... is not consist- ent with this hypothesis. Alternatively there could be an interchange of fish ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 27–45 : Auteur(s): Fenaughty, J.M

4. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

   datasets were calculated by the multistage sampling formula with the variance terms derived from the ... to 10% haul coverage. These results suggest that data collection by scientific observers on board ... statistical precision required for the specific objective of a study that includes consideration of the cost ... , it is assumed that krill length within a haul would be expected to have a unimodal distribution. To ... with the variance terms obtained from hierarchical Bayesian modelling indicates that the relationship ... change depending on data type. This suggests that although the lower limit of sample size should be ... - ommendation of this study is that the lower limits of haul sample size have to be set for 30–50 hauls within ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota

5. Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area

   2001/02 year class lasted four months. This was estimated based on a retrospective count of daily ... relationship found between fish length and daily otolith increments could be used for age differentiation of ... ; Lisovenko, 1982; Frolkina, 1989, 1999, 2001, 2002) has demonstrated that fi sh with gonads at stages II ... (1980, 1982, 1985) reported the values to be 13.5 and 19.2 cm respectively; and Frolkina (1989, 2001 ... ) reported the mean length of a yearling to be 9–11 cm and that of 2-year-old fi sh to be 17–19 cm. For ... appeared that hatching occurred in September–October 2000 and in June–October 2001 (Figure 4). Therefore ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Auteur(s): Shcherbich, L.V

6. Management and uncertainty: the example of South Georgia

   (including the effects of doing nothing) could provide a procedure for providing advice that could cope with ... :  Decisions on fishery management are often made with some degree of uncertainty in scientific advice. Such ... uncertainty is unlikely to be avoided even though further research should reduce its degree. It seems useful ... . From an examination of Articles IX 2(f) and XV 2(e, d) of the CCAMLR Convention it follows that a ... exploitation, perhaps F=0.05, could be sustained with a recruitment around that of the 1970's i.e. around 5 ... exploitation (e.g. F=O.l) coul4 be sustained, and that this could be consistent with a higher recruitment ... pattern of mortalities that are more consistent with apparent changes of fishing effort. It must be ... often made with some degree of uncertainty in scientific advice. Such uncertainty is unlikely to be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Auteur(s): Gulland, J.A.

7. Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study

   /decline rates of the Adélie penguin population at Béchervaise Island were found to be more sensitive to ... parameters. Results are discussed in comparison with data from a declining Adélie penguin population in the ... small percentage of the total population that the effect on the overall population model will be small ... rate of approximately 0.3% per annum. It should be noted that this population model assumes stable ... incubated nests. It is quite pos- sible that these values of adult survival may be underestimated by this ... colony breeding success reasonably well. It should be emphasised that this model assumes a stable rate ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Auteur(s): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry

8. The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   nototheniids, and that the importance of krill in fish diets varies substantially both with time and location ... by mesopelagic fish in the Atlantic sector of the Southern Ocean. It is clear from this review that ... on various scales, as well as with the availability of alternate prey in the different regions in the ... uncertainty exist, which need to be considered in ecosystem and food-web models for the Southern Ocean. For ... , and that the importance of krill in fish diets varies substantially both with time and location on ... of fishes were dealt with to the extent that they are necessary for the understanding of the role ... to be of little (if any) importance with respect to their krill and larger zooplankton con- sumption ... atriceps) indicate that a substantial biomasses of fish may be consuming krill at least in summer ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Auteur(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams

9. Editorial

   interpreting indicators from populations that may be depleted. The suite of papers on krill cover the spectrum ... urge all authors who consider that their papers may be relevant to CCAMLR to contact the CCAMLR ... contents reflect the important science that supports CCAMLR’s management of the marine living resources of ... the Southern Ocean. In particular there is a suite of papers that address key aspects of improving ... indicators from populations that may be depleted. The suite of papers on krill cover the spectrum of ... authors who consider that their papers may be relevant to CCAMLR to contact the CCAMLR Representative for ... important science that sup- ports CCAMLR’s management of the marine living resources of the Southern Ocean ... . In particular there is a suite of papers that address key aspects of improving assessment of the ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 167 : Auteur(s): Editors

10. Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian toothfish fishery

    modified artisanal system, which includes a net sleeve that is placed on secondary vertical lines, has ... macrocephalus). The performance of this fishing technique with regard to seabird mortality and depredation by ... then compared with similar data obtained in 2002 in the same fleet in the same fishing grounds prior to ... before setting the line, with similar data obtained during the 2006 season. Figure 5 shows clearly that ... ad T ot al (N °) N um be r o f b ird s 0 200 400 600 800 1000 1200 1400 1600 1800 2002 ... 2004 2006 M or ta lid ad T ot al (N °) N um be r o f b ird s 1800 1600 1400 1200 1000 ... net sleeve that is placed on secondary vertical lines, has practically eliminated depredation of fish ...

    Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 79–91 : Auteur(s): Moreno, C.A., R. Castro, L.J. Mújica and P. Reyes

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