Résultats de la recherche

1. Evaluating length-frequency data and length-based performance indicators in new and exploratory fisheries

   been difficult. In this paper, we show that length-frequency data on their own have little inherent ... conclusive information about stock status. While length-frequency data can be useful in assessments when ... integrated with other more informative estimators for stock abundance and productivity, interpretation of ... trends in length-frequency data can be misleading and should be avoided. Author(s):  P.E. Ziegler, D.C ...

   Meeting Document : WG-FSA-10/43 : Auteur(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)

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

   were generated, suggesting that hydrodynamic convergence might be responsible for accumulation of krill ... neritic and nearshore zones. This indicates that slope frontal features may be important for the formation ... in this zone. The total biomass over the survey area was estimated to be 1.59±0.45 million tonnes (95 ... + neritic + nearshore zones). Information from other studies indicated that krill biomass in this region had ... . This indicates that slope frontal features may be important for the formation of favourable conditions ... ). This implies that the least favourable feeding environment might be responsible for the lower krill ... , comparing the two deeper zones (slope frontal and oceanic) the former zone may be more favourable in that ... . Areas of dense krill concentration tended to coincide with the shelf break or be on the shelf, where ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

3. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.1

   that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of coefficient ... variance of biomass estimate from the bootstrapped procedure, under the condition that the exploitation ... sizes turned out to be larger in many blocks and smaller in a few blocks over the data poor-fisheries ... least 3 years with the same sample size as decided at the last CCAMLR meeting for the current research ...

   Meeting Document : WG-FSA-13/38 : Auteur(s): Delegation of Japan

4. Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.2

   such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... sizes turned out to be larger in many blocks and smaller in a few blocks over the data poor-fisheries ... least 3 years with the same sample size as decided at the last CCAMLR meeting for the current research ...

   Meeting Document : WG-FSA-13/39 : Auteur(s): Delegation of Japan

5. Results of the fourth CCAMLR sponsored research survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, February 2015 and further development of the time series

   of high sub-adult abundance that could be included as strata in future annual surveys. The 2015 ... Abstract:  At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The ... survey is consistent with the decline in the abundance of this cohort through time through mortality and ...

   Meeting Document : WG-SAM-15/44 : Auteur(s): S.M. Hanchet, B.R. Sharp, S. Mormede, S.J. Parker (New Zealand) and M. Vacchi (Italy)

6. Migrations of Antarctic fish Pseudochaenichthys georgianus Norman, 1939 in the Scotia Sea

   mostly young, small fishes. They have stomach filled well with krill so swim probably to match with ... distribution of krill, which flow further to North and East with geostrophic currents. Following after them ... , with stomach often full of them, they became large, so the numbers of small individuals are ... get warmer. Finally at the end of Scotia Arc Islands- at South Orkney, P. georgianus are large with ...

   Meeting Document : WG-FSA-12/68 Rev. 1 : Auteur(s): R. Traczyk (Poland)

7. Defining predator foraging ranges, illustrated using Adélie penguin foraging tracks from Mawson coast

   likely to be foraged by predators from one year to the next, i.e. what is a predator’s feeding range ... taking into account interannual variation in foraging locations? This paper considers the issues to be ... addressed in answering that question. The proposed method for defining foraging ranges is based on an ... these foraging ranges for the purposes of small-scale management units may need to be examined in three ...

   Meeting Document : WG-EMM-02/41 : Auteur(s): I.R. Ball, A.J. Constable, J. Clarke and L. Emmerson (Australia)

8. Feeding of nine Antarctic fish species and their daily ration evaluations

   Chaenodraco wilsoni and Trematomus eulepidotus indicates that they are plankton-eaters as their diet comprised ... mainly of Euphausiids; T. centronotus is a benthophage feeding mainly on Gammarids and Polychaetas, T ...

   Meeting Document : WG-FSA-91/08 : Auteur(s): Ye. A. Pakhomov and V. B. Tseitlin (USSR)

9. Seabird mortality and the Falkland Islands trawling fleet

   . It is estimated that >1,500 seabirds, predominantly black-browed albatross (Thalassarche ... from the waters surface, and are subsequently hauled onboard. In over 600 observed hauls in 2001-03 no ...

   Meeting Document : WG-FSA-03/91 : Auteur(s): B.J. Sullivan, T.A. Reid, L. Bugoni and A.D. Black (United Kingdom)

10. Fishery Report: Dissostichus eleginoides and Dissostichus mawsoni South Sandwich Islands (Subarea 48.4)

    Group agreed that this model should be used to assess the D. eleginoides stock in Subarea 48.4 North ... , with only natural mortality occurring. It was assumed throughout that the proportions of natural ... that were too low to allow the correct number of fish to be tagged. Priors 24. Table 4 shows the ... recommended that the model including 2008 tags be used to estimate yield for this stock. 0.0 0.5 1.0 1.5 ...

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