Résultats de la recherche

1. Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia

   the season in August. Killer whale interactions appear to be more consistent with no obvious pattern ... the start of the season with the sightings becoming fewer towards the end of the season in August ... (Subarea 58.7). In the Crozet and Kerguelen fishery, depredation has been estimated since 2001 ... year to year since 2001 (SC-CAMLR, 2007a). Currently only limited data on depredation levels from the ... the fishing sea- son (May to August). In addition to the presence or absence and abundance of ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Auteur(s): Moir Clark, J. and D.J. Agnew

2. Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations

   remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... 2001/02, some catch was reported from APBSE and APBSW during the June–August period (mid-winter ... , operational timing has remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In ... statistics were obtained from the public domain section of the CCAMLR website, and the fine-scale data were ... the Antarctic krill fishery (a: December–February; b: March–May; c: June– August; d: September ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Auteur(s): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu

3. A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ

   last one as recent as 24 August 2001. On the fi rst aerial survey in September 1996, illegal ... , which was limited to the period from 30 October 1996 to 31 August 1997. Fishery Development The ... August 1997 to 1 April 1998) and from 31 August 1998 onwards to provide for year- round access. The ... during April 2001. A crude analysis of the resulting data, based on swept-area methodology (with ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Auteur(s): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller

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

   distribution, timing and area of spawning, and movements between geographical sectors) on the adult section of ... area of spawning, and movements between geographical sectors) on the adult section of the exploited ... operating in the fishery, having replaced the trawlers completely in 2001/02. Legal catches have been ... 5) only were studied for a period ranging from March to August, as this period is thought to cover ... Trawling (1979 to 2001) The first model described CPUE (kg/hour trawling) (Table 2): CPUE (kg/h) = α ...

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

5. Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a

   In this section an algorithm for adapting catch limit and tagging rates is presented that works ... increased from 5–10% to 20% – most likely an interaction between the uncertainty in the stock dynamics ... . 2001. Using demographic methods to construct Bayesian priors for the intrinsic rate of increase in ... rela- tively well established approach (McAllister et al., 2001) when it is likely that the data will ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Auteur(s): Hillary, R.M

6. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   . Further, the inclusion of an area stratum by fishing year interaction as an additional random effect in ... the GLMM is investigated. Fitting the stratum-by-year interaction as a fixed effect is problematic ... may be difficult. Fitting the stratum-by-year interaction as a random effect avoids this difficulty ... , and diagnostic methods to evaluate the validity of considering this interaction as random are ... -classifi cation. Further, the inclusion of an area stratum by fi shing year interaction as an additional ... random effect in the GLMM is investigated. Fitting the stratum-by-year interaction as a fi xed effect is ... estimates may be diffi cult. Fitting the stratum-by-year interaction as a random effect avoids this diffi ... culty, and diagnostic methods to evaluate the validity of considering this interaction as random are ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Auteur(s): Candy, S.G

7. Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery

   magazine/hour. 50-100 kg anchors which sank the mother line quickly to target depths (thereby reducing ... dive recorders were made on the second magazine deployed in a set, a set usually involving eight ... 12 X 6.5 kg weights/magazine as described above. After four days fishing the CFL Pioneer caught in ... further behind the vessel) and weights were deployed every 70 m (i.e. 16 weights/magazine) on the ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Auteur(s): Robertson, G.G

8. Scientific observations in CCAMLR fisheries – past, present and future

   Hauling information Environmental conditions Marine mammal interaction with fishing gear Seabird by ... version which can be downloaded from the publications section of the CCAMLR website (www.ccamlr.org ... section should be completed. 3. Guidelines for scientifi c observers • maturity scales for the main ... introduced in 2000. na – not applicable. Logbook format 1996 1997 1998 1999 2000 2001 2002 2003 2004 ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Auteur(s): Sabourenkov, E.N. and E. Appleyard

9. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

   : (i) species interaction effects alone can explain observed predator abundance trends, though not ... for investigation. Amongst the key inferences of the study are that: (i) species interaction effects ... –krill interaction model introduced in Mori and Butterworth (2004) in various ways, as detailed in the ... ‘Data and methods’ section. First, however, the background motivating this study is summarised. Brief ... taken between 1973 and 2001 (Miller, 2002). The fishery has been stable for the past nine years with ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth

10. Antarctic krill and ecosystem management – from Seattle to Siena

    over 500 000 tonnes in 1982 and a total of 6.1 million tonnes being taken between 1973 and 2001 ... , 1998). From the ‘one-way’ interaction model developed (i.e. where fl uctuations in krill abundance ... de- velop ecosystem assessments as a means to obtain some indication of ‘ecosystem health’, taking ... section on WG-EMM below). Implications of Links between Krill and Environmental Parameters Flux WG ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Auteur(s): Miller, D.G.M

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