Résultats de la recherche

1. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   occurred year- round throughout Antarctica, and regularly with an estimated ~20% of the stock deeper than ... ) method has been in use for 20 years but there have been various attempts to use other analytical ... first is the underside of sea-ice – an important habitat for krill year-round (Brierley et al., 2002 ... -frequency distribution reveal that there is widespread undersampling of juvenile krill ~20 mm long ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Auteur(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

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

   , satellite-tracking, South Georgia, wandering albatross INTRODUCTION Over the last 20 years wandering ... times of the year when the potential for albatross mortality associated with longline fishing might be ... . Up to 1992/93 the fishery was open year-round The distribution of foraging D. exulans during the ... of year, when chicks need frequent feeding and one parent remains at the nest brooding or guarding ...

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

3. The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species

   20-30 years, wl~ich is the critical period over which the system should not be irreversibly changed ... inainmals - M AG Americas, 2000) Age at maturity (years) Plus class Natural mortality (year-]) Body ... zero after 20 years. Prey 2 is more abundant (-3x) than Prey 1 in the absence of fishing and then ... years (see text for details). Year Figure 7: Individual productivity for each predator in the trial ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Auteur(s): Constable, A.J

4. Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988

   10 20 30 40 50 60 70 80 NET V 0 L U MED ENS IT Y ( g. m-3 ) Figure 3: Frequency distributions of ... -operative survey between RV Kaiyo Maru and a Japanese trawler was conducted from 17 to 20 January 1988 on ... the fishing ground north of Livingston Island (Figure 1). A total of 30 experiments on TS measurement ... including 30 co-operative experiments, was provided by the trawler. The number of krill aggregations per ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Auteur(s): Endo, Y. and Y. Shimadzu

5. The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)

   eleginoides) have been fished in the Kerguelen Islands zone for 20 years, firstly with trawlers and more ... al e 0. 00 03 30 * 0. 00 00 17 * 0. 75 05 57 N S 0. 00 00 26 * 0. 00 00 20 ... the Kerguelen Islands zone for 20 years, firstly with trawlers and more recently with longliners ... entered in a single- table database called ‘Kerpêche’ for trawlers (split- years – 1 July to 30 June ... la zone des îles Kerguelen depuis 20 ans, d’abord avec des chalutiers puis des palangriers. C’est la ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Auteur(s): Lord, C., G. Duhamel and P. Pruvost

6. Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish

   recommendations to improve gear loss reporting. Methods Data grooming Fishing years are assigned to the year in ... . Collecting and analysing data to better CCAMLR Science, Vol. 19 (2012): 17–30 17 ESTIMATING UNACCOUNTED ... unit (SSRU) (ii) quantify the number of hooks lost attached to sections of line each year, and the ... which the fishing season ended (i.e. the 2007/08 season is referred to as the 2008 fishing year). The ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Auteur(s): Webber, D.N. and S.J. Parker

7. Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01

   March 2001 (late-season). The surveys were the first in a newly planned five-year series of observations ... southwest of the island. Together these surveys provided temporally and spatially extensive coverage around ... observations from previous years, krill density in the western box in the mid-season survey was less than that ... planned fi ve-year series of observations designed to complement and extend an existing time series ... survey strategy for the new fi ve-year series addresses these temporal shortcomings by including ... results of surveys conducted in the fi rst year (2000/01) of the new series, commenting additionally on ... providing data to continue our existing time series and ex- tending within-year coverage both spatially and ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 71–82 : Auteur(s): Brierley, A.S., C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst

8. The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery

   past harvests of krill taken within a grid of 0.5" latitude by 1" longitude (approximately 30 km by ... 30 km) between 1972 and 1994. They are taken as indicating the consistent presence of harvestable ... -shaped area with an angle of approximately 30". Whilst fast-ice was still present they walked to the ... closest edge of a polynya which forms each year in this region (Kerry et al., 1995a). The location of ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Auteur(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson

9. Modelling variability and estimating power to detect change in Adélie penguin fledgling weights

   year, but there was no evidence that the rate of decline differed between years. A consequence of this ... statistical models were developed from first principles and incorporated both within- and between-year ... at a single time each year, without substantial loss of power to detect change. Further modelling ... the number of birds weighed in each five-day period from 50 to 30 without substantial loss of power ... birds, or (c) 30 birds each year. Change detected for three to five years of monitoring after change ... of post-impact monitoring sce- narios including numbers of fledglings weighed each year (30, 50 and ... than 30 birds each year. This is the case for both one- and two-tailed tests with a power greater ... % change 0 4 8 12 16 20 0.0 0.2 0.4 0.6 0.8 1.0 c) 30 birds % change (a) (b) (c) % change% change ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Auteur(s): Emmerson, L.M., C. Southwell and J. Clarke

10. Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed with mitochondrial and intron DNA markers

    , and precipitated with 70% ethanol at –20°C (adapted from Taggart et al., 1992). The DNA pellets were ... air dried and resuspended in 40 µl sterile water and stored at –20°C. Two classes of markers, mtDNA ... performed in 20 μl volumes for a minimum of 4 h, following the manufacturer’s recommendations (New England ... 2.23 0.17 0.68 49 Genetic diversity in the Antarctic toothfi sh 30 recaptures have moved ...

    Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 43–51 : Auteur(s): Smith, P.J. and P.M. Gaffney

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