Résultats de la recherche

1. Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia

   frequency occurrence of T. gaudichaudii both increased with a decreasing proportion of E. superba in the ... or amphipods and 27 % were mixed, suggesting a sigmoidal functional response. The energy and mass of ... due to higher energy or time costs associated with feeding on alternative prey types. Author(s):  C.M ...

   Meeting Document : WG-EMM-12/17 : Auteur(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)

2. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season

   reference case resulted in a much higher estimate of initial biomass, though this appeared to be almost ... better explain these data resulted in estimates of initial and current biomass that were very similar to ... small effect that slightly modified estimates from the models, suggesting that the new data had a ... similar pattern to that of previous years. Preliminary models using tag-recapture data from all vessels ...

   Meeting Document : WG-FSA-06/60 : Auteur(s): A. Dunn and S.M Hanchet (New Zealand)

3. Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3

   therefore be consistent with the CCAMLR decision rule. Author(s):  T. Earl, M. Soeffker and C. Darby (United ... . The 2008 year class is estimated to be well above average. Provisional projections indicate that a ... Abstract:  Assessment of the Patagonian toothfish (D.eleginoides) in Subarea 48.3 indicates that ... catch limit set at around 2,750 tonnes would be expected to keep the stock at or above 50% of B0 after ...

   Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)

4. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   cover a highly spatially structured stock. It is recommended that the mark-recapture data not be ... yields be estimated by integrating across uncertainties in natural mortality. It is also recommended that ... yield using CASAL, 2,306 tonnes, is less than that using the GYM, 2483 t. The reasons for this ... using CASAL and demonstrates that all of the data available for assessments, including surveys, fishery ...

   Meeting Document : WG-FSA-06/64 : Auteur(s): A. Constable, S. Candy, T. Lamb and I. Ball (Australia)

5. Long-term change in zooplankton communities of the Southern Ocean between 1997 and 2018: implications for fisheries and ecosystems

   productivity, sea-surface temperature (SST), mixed layer depth, sea ice and the spatial gradient of SST (as an ... ), Foraminifera, Fritillaria spp., Oithona similis and pteropods. Trend analysis suggests that the environmental ... –0.83% per year averaged across the Southern Ocean, and with much higher rates of increase in some ... regions. In contrast, the environmental suitability for pteropods is predicted to be decreasing in the ...

   Meeting Document : WG-EMM-2019/66 : Auteur(s): M.H. Pinkerton, M. Decima, J. Kitchener, K. Takahashi, K. Robinson, R. Stewart and G.W. Hosie

6. Fishing and conservation in southern waters

   with the 1970's and 1980's, when most fisheries were subsidized, economic considerations and ... stocks we re implemented only from 1989 onwards. There is evidence that some fish stocks have started to ... appears to be remote at present. The way forward is likely to be a single-species model for the krill ... Southern Ocean is likel y to be much larger than current catches. The fishery potential of krill and ...

   Meeting Document : SC-CAMLR-XII/BG/11 : Auteur(s): Delegation of Germany

7. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during 1990/91 austral summer

   the neritic and nearshore zones. This indicates that slope frontal features may be important for the ... krill into this zone. The total biomass over the survey region was estimated to be 1.59 ± 0.45 million t ... that krill biomass in this region had been lower than expected until early February 1991. As for ... females were exceedingly abundant in the slope frontal zone with the mean density of 23.9 g/m2 (411,000t ...

   Meeting Document : WG-KRILL-92/26 : Auteur(s): T. Ichii, H. Ishii and M. Naganobu (Japan)

8. AND DOMESTIC SUBANTARCTIC FISHERIES BY THE AUSTRALIAN ANTARCTIC DIVISION AND THE AUSTRALIAN FISHERIES MANAGEMENT AUTHORITY

   . Australia considers the use of such a performance management system to be essential in ensuring that high ... quality data continues to be collected by SISO. Author(s):  O’Regan, K., Welsford, D., Robertson, T., Lamb ... the Australian Fisheries Management Authority (AFMA), with technical and data management support from ... increase in sophistication, the tasks required to be completed by observers are increasing in number and ...

   Meeting Document : TASO-08/05 : Auteur(s): O’Regan, K., Welsford, D., Robertson, T., Lamb, T.

9. IDENTIFICATION OF DATA QUALITY METRICS FOR TAGGING DATA SELECTION

   to identify those metrics that are most informative with respect to the identification of good ... bootstrap analysis indicates that the range of data quality metrics associated with known good tagging data ... quality metrics may be most powerful in distinguishing the trips considered to have good tagging data ... Benford's Law, and the variation in toothfish catch rates.This reduced set of data quality metrics ...

   Meeting Document : WG-SAM-09/19 : Auteur(s): D.A.J. Middleton and A. Dunn (New Zealand)

10. Movement and growth of tagged toothfish around South Georgia and Shag Rocks (Subarea 48.3)

    toothfish pot vessel in international waters at that latitude in 2001. Author(s):  T.R. Marlow, D.J. Agnew ... CCAMLR observer trips. Of these, about 900 have also been injected with either Strontium Chloride or ... and 2001, and have been at liberty from one to two years. Four fish were tagged and recaptured from ... groundfish surveys may not yet be large enough to be available to the longline fishery and there have been no ...

    Meeting Document : WG-FSA-02/28 : Auteur(s): T.R. Marlow, D.J. Agnew and I. Everson (United Kingdom)

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