Résultats de la recherche

1. Uncertainty in standard sphere calibrations

   calibrated with the 30.5 mm Cu sphere were consistently lower than those with the 33.2 mm WC sphere. Prompted ... experiments, system calibration with an optimal standard sphere is estimated to be accurate to-1.2 dB, with a ...

   Meeting Document : WG-EMM-95/70 : Auteur(s): Demer, D.A., Hewitt, R.P.

2. Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems

   ensure catch reporting in accordance with the present conservation measure (CM 21-03) and to investigate ... the flow scales. The maximum residence time decreased with increasing catch rates, ranging from ... approximately normally distributed around a mean value of 1.6 tonnes with ca. 90% of the deviances contained ... indicate that the uncertainty associated with the historical reports of catch from these fishing vessels ...

   Meeting Document : WG-EMM-18/22 : Auteur(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad

3. Hook loss in CCAMLR exploratory fisheries

   hook loss data was provided by 21 of the 34 vessel/fishery reports with an estimated 317920 hooks lost ... attached to sections of lines.  In 2012 15 of the 26 vessel/fishery reports provided non-zero data with an ... to be reiterated in order to achieve a greater level of engagement with the requirements to complete ...

   Meeting Document : WG-FSA-12/65 : Auteur(s): Secretariat

4. Comparative analysis of the results of determination of reproductive ability of Antarctic toothfish in the Subarea 88.3

   the Bellingshausen Sea the Antarctic toothfish had deferred reproductive ability compared with other ... subareas of the Pacific Antarctic studied previously, it was detected a low share of females with the ... ovaries at the stage of vitelligenous growth of oocytes (diameter 1.41-1.61 mm), and males with maturing ...

   Meeting Document : WG-FSA-12/32 : Auteur(s): S.V. Piyanova, A.F. Petrov and A.V. Presnyakov (Russia)

5. Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: Investigating the roles of ocean and sea ice transport

   in the Southern Ocean. Krill have a close association with sea ice which provides access to a ... . Here we present Lagrangian modelling studies at the circumpolar scale that include interaction with sea ... Modelling (OCCAM) project model together with satellite-derived sea ice motion vectors to examine the ... interaction with sea ice is important in determining the large-scale distribution of krill and its associated ...

   Meeting Document : WG-EMM-07/P10 : Auteur(s): S.E. Thorpe, E.J. Murphy and J.L. Watkins (United Kingdom)

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

   contend with large interannual fluctuations in prey availability and hence the cost of chick provisioning ... . Adults faced with this uncertainty can mechanistically balance parental care by adopting a strategy ... , 1991 and 1992, respectively) and was correlated with annual measures of breeding adult body weight and ... in response to decreases in prey abundance in a manner consistent with predictions of life-history ...

   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)

7. Seabird avoidance measures for small Alaskan longline vessels

   16.8 m and with infrastructure (a 45-m streamer line with a minimum aerial distance of 20 m) was ... achievable and practical regardless of vessel size, especially with a lighter streamer line design. However ... , the current requirement for small vessels using fixed gear of a single streamer line with no mandatory ...

   Meeting Document : WG-FSA-05/36 : Auteur(s): E.F. Melvin and M. Wainstein (USA)

8. ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT

   early closure of the fishery with only 58.9 t of the 75 t TAC of D. eleginoides taken; 2. The target ... tagging rate of 5 fish per tonne was exceeded by both vessels, with 344 D. eleginoides tagged and released ... 48.4 and 48.3. 8. CASAL estimates of D. eleginoides population size in the North of 48.4 agree with ... simple Petersen and local CPUE estimates, with a B0 of 1143 t and B2009/B0 of 85%. 9. The sustainable ...

   Meeting Document : WG-FSA-09/17 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)

9. Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, in late summer of years 1994–97, Dr E. Holmberg surveys

   with/without food in the area of investigation didn't show a consistent pattern from year to year ... , phenomenon for which non consistent explanation was found. The variation of the diet with respect to the ... abundance; and high in 1946 and 1997, in line with the years of krill richness. This information is well in ... accord with independent information from acoustic surveys and krill dependent species monitored in the ...

   Meeting Document : WG-FSA-97/48 : Auteur(s): Barrera-Oro, E., Marschoff, E., Casaux, R.

10. Preliminary results on by-catch of fishes caught by the fishery vessel Chiyo Maru No. 3 to the north of the South Shetland Islands (February to March, 1996)

    in 41 hauls. Notothenioid juveniles were found in 30 hauls carried out in waters with a depth of 87 ... in 11 hauls operated at some distance from the shelf, in the offshore waters with a depth of 275 ... -1780m (average 1006m). Notothenioid juveniles never caught with bathypelagic fish species in all hauls ... occurred in hauls with lower krill CPUE. Author(s):  Ichii, T., Kawaguchi, S., Naganobu, M. Title ...

    Meeting Document : WG-EMM-96/52 : Auteur(s): Ichii, T., Kawaguchi, S., Naganobu, M.

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