Résultats de la recherche

1. By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1) during the 1995/96 season

   1996 over the depth range 300 to 1 700 m. Bottom longlines, carrying 3 800 hooks each, baited with ... , with the exception of the deepest sets (Figure 3). The maximum index of abundance is 6 fish/hour (i.e ... insignificant at depths of less than 700 m, shows a steady but gradual increase with depth (Figure 3). The ... catches made off the Kerguelen Islands during the 1995/96 season. fishing cruise with sex ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Auteur(s): Duhamel, G., P. Pruvost and D. Capdeville

2. Estimating krill recruitment and its variability

   rate for 1+ krill (the ratio of the number of krill aged one year to the number of krill aged one year ... and above) of 0.339 with a standard deviation (SD) of 0.100. The corresponding result for recruitment ... for 2+ krill (the ratio of the number of two-year-old krill to the number aged two and above) from ... nine surveys is 0.552 with a standard deviation of 0.074. A number of the assumptions needed for ... number of krill aged one year to the number of krill aged one year and above) of 0.339 with a standard ... two-year-old krill to the number aged two and above) from nine surveys is 0.552 with a standard ... with R(t) estimated for both putative one- and two-year-old age classes. above data, and four age ... distributions to density-at-length data from various surveys, with a youngest putative age of one year. Top ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Auteur(s): de la Mare, W.K

3. A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3

   year Ey • A general procedure for the study of natural mortality rate specification with the use of ... annual fishing mortality Fay, and abundance Na,y rates by age and fishing year, where terminal fishing ... mortality rates and fishing mortality rates for the oldest age group by fishing year are estimated by the ... practical calculations, with regard for the random pattern of the initial data and the final sample amount ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Auteur(s): Gasyukov, P.S. and R.S. Dorovskikh

4. Potential interactions between wandering albatrosses and longline fisheries for Patagonian toothfish at South Georgia

   that D. exulans breeding at South Georgia have a relatively low potential risk of interaction with ... times of the year when the potential for albatross mortality associated with longline fishing might be ... m and deeper. - - and fishing took place in most months of the year with between 1 and 12 ... have used, with permission of the parties concerned, CCAMLR data for the years 1990/91 to 1993/94 ... interaction with longline fisheries around South Georgia between December and February (incubation period ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Auteur(s): Croxall, J.P. and P.A. Prince

5. Modelling and decision making as part of the CCAMLR management regime

   predator (seal) harvests. A time horizon of 5 years is considered appropriate, with time steps of one ... fishing. 5 years. 1 year unless there is a seasonal influence ·on the population. Data limited ... and prey biomass. Harvest of predators and prey. 5 years. 1 year unless there is a seasonal ... biomass. Prey biomasses and harvesting. 5 years. 1 year unless there is a seasonal influence on the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 295-322 : Auteur(s): Miller, D.G.M.

6. Status of the FIBEX acoustic data from the West Atlantic

   survey) with data collected at 120 kHz (all other vessels), it is concluded that this does not materially ... are consistent with the other surveys. The authors can find no explanation for this difference. File ... with a modal integration interval of 3 706 m. Therefore, prior to the re-analysis carried out for the ... factor due to the combination of data collected at 50 kHz (Walther Herwig survey) with data collected ... biomass. The data from the Professor Siedlecki survey do not provide estimates that are consistent with ... order to produce a dataset with consistent referential integrity. In this paper, data from the FIBEX ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Auteur(s): Trathan, P.N. and I. Everson

7. Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica

   rope was equipped with a 40 cm diameter bobbin gear. The mouth opening was, on average, 12 to 13 m ... wide with a headline height of 4 to 5 m. Nets were towed for a standard haul duration on the bottom of ... with little benthos in the net. Of the benthos, sponges were usually the most abundant taxon in the ... codend. At four stations, the biomass of sponges exceeded 100 kg with the maximum being 202 kg at ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Auteur(s): Constable, A.J.

8. A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey

   tonnes, with a standard deviation of 10 million tonnes. The MaxEnt method provides new insights into the ... content of the image. It is informative that as reconstructions with 6–9 hidden channels (Figure 3) are ... biomass inferred for the survey area was 208 million tonnes, with a standard deviation of 10 million ... placed transects, and the CCAMLR- 2000 Survey was designed in accordance with such transect placing ... data can be considered as an image in which krill densities are plotted on a rectangular grid, with ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Auteur(s): Heywood, B.G., A.S. Brierley and S.F. Gull

9. Attribtuion of acoustic echoes to squid in the south Atlantic

   and Loligo gahi), but a third species, sometimes caught as a by-catch with Illex argent inus , the ... acoustic targets that could be attributed to the haul. No other species were caught with the squid which ... the area, also described here, only small numbers of squid were caught; these did not coincide with ... (see Starr and Thorne, in press, for a review of acoustic assessments of squid). METHODS In early ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Auteur(s): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley

10. A review of the trophic role of mesopelagic fish of the family Myctophidae in the Southern Ocean ecosystem

    throughout the entire year, and by high plankton productivity to depths of 500 m or greater (Voronina, 1971 ... Antarctic ecosystem. Detailed studies are rare, however, and all deal only with the most abundant species ... was calculated at 15 times its body weight with a daily intake of 4% body weight (Gerasimova, 1990 ... nototheniids and channichthyid fish or squid. Mammals Marine mammals, with the exception of fur seals, do ...

    Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 71–77 : Auteur(s): Kozlov, A.N

Pages