Résultats de la recherche

1. A REVIEW OF THE UNCERTAINTIES ASSOCIATED WITH PENGUIN POPULATION AND ABUNDANCE ESTIMATES FOR THE CCAMLR REGION

   data required to achieve this are only available for a small number of site-year combinations. The ... other fundamental problem is that the latest site counts are of variable ages, and since penguin ... Abstract:  This report reviews the availability of data describing penguin abundance in the CCAMLR ... Convention area, and the uncertainties in deriving overall abundance estimates from these counts. Counts of ...

   Meeting Document : CCAMLR-IWC-WS-08/08 : Auteur(s): Trivelpiece, W., Fraser, B., Trathan, P., Ainley, D., Southwell, C., Bost, C., Hindell, M., Lyver, P., Ratcliffe, N., Woehler, E.

2. Lessons from CCAMLR on the implementation of the ecosystem approach to managing fisheries

   Abstract:  The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... widely recognised as a leading international organisation in developing best-practice in the ecosystem ... approach to managing fisheries.  CCAMLR provides a useful case study for examining the impediments to ... assessing the status of target species and their predators, but also in designing cost-effective management ...

   Meeting Document : WG-EMM-12/P06 : Auteur(s): A.J. Constable

3. Diet and trophic niche of Macrourus spp. (Gadiformes, Macrouridae) in the Ross Sea region of the Southern Ocean

   Abstract:  Both Macrourus caml and M. whitsoni are probably abundant and widespread in the Ross ... Sea region at depths between approximately 500 and 2100 m. We present the analysis of stomach contents ... (henceforth Macrourus spp.) in the Ross Sea region of the Southern Ocean. Samples of stomach contents were ... obtained from the Ross Sea slope (between about 71° and 73°S) and on the Scott Island and seamount chain ...

   Meeting Document : WG-EMM-12/P03 : Auteur(s): M.H. Pinkerton, J. Forman, D.W. Stevens, S.J. Bury and J. Brown

4. Using effective sample sizes to evaluate the efficiency of length samples collected by at-sea observers in the krill fishery in Subarea 48.1

   , collecting length data from the catch is a task undertaken by all at sea observes in CCAMLR fisheries ... . Although analyses in the past have looked to the optimal design of the observer program, in terms of levels ... characterise how many krill are measured by observers, and for how many hauls. We then simulate the impact of ... different haul-wise sample sizes on the ability to estimate mean length in a sample per SSMU × month ...

   Meeting Document : WG-SAM-16/39 : Auteur(s): N. Kelly, S. Kawaguchi, P. Ziegler and D. Welsford

5. Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   Abstract:  This paper describes the diet and foraging behaviour of Ad6lie penguins at B6chervaise ... Island during 1998-99, a season of high chick mortality. One thousand nests perished in the three weeks ... following first hatch, when the chicks were very small. A total of 802 chicks reached crèche age from 1880 ... nests compared to previous "good" seasons in which between 1200 and 1800 chicks crèched on the ...

   Meeting Document : WG-EMM-99/25 : Auteur(s): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)

6. FEEDING AND FOOD INTERRELATIONSHIPS OF ANTARCTIC TOOTHFISH D.MAWSONI NORMAN, 1937 (PERCIFORMES, NOTOTHENIIDAE) IN NEAR-CONTINENTAL WATERS OF THE INDIAN OCEAN ANTARCTIC AREA AND ON THE BANZARE BANK

   Abstract:  The paper is based on materials on D.mawsoni feeding collected by authors in the four ... near-continental seas of the Indian Ocean Antarctic area (Dupont D’Urville, Mawson, Davis, and ... Cosmonaut Seas) and on the Banzare Bank during 2004-2008. The food relationships are considered. The ... qualitative and quantitative composition of diet for young and adult Antarctic toothfish is studied. The ...

   Meeting Document : WG-FSA-08/34 : Auteur(s): A.F. Petrov and I.G. Istomin (Russia)

7. A randomised sampling design used in the longline fishery for Dissostichus eleginoides in the Southern Indian Ocean

   individuals taken by individual longlines in the fishery for Dissostichus eleginoides. The line was divided ... into constituent baskets of line; we used the line as the sampling frame, and baskets as the primary ... sampling units. The design allows representative samples to be taken while a line is being hauled; it ... offers the potential of little disruption to commercial activities and reductions in observer effort ...

   Meeting Document : WG-FSA-96/56 : Auteur(s): Duhamel, G., Ashford, J.

8. EVALUATION OF VME TAXA MONITORING BY OBSERVERS FROM FIVE VESSELS IN THE ROSS SEA REGION ANTARCTIC TOOTHFISH LONGLINE FISHERIES DURING THE 2008-09 SEASON

   Abstract:  Conservation Measure 22-07 (2008) requires vessels fishing in the Ross Sea region (and ... these samples for subsequent onshore classification by taxonomists. Comparison of the observer’s ... classification versus the taxonomist’s classification showed that for most groups, the observer classifications ... materials; stylasterids and gorgonians. Errors in other groups indicated the observers did not always record ...

   Meeting Document : TASO-09/08 : Auteur(s): Carter, M., Parker, S.J., Mormede, S., Tracey, D.M.

9. Revised estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   Abstract:  This report updates the estimates of the biological parameters for Antarctic toothfish ... (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B). We present revised estimates of the ... observer data collected from commercial fishing operations in the Ross Sea. In addition, we review meta ... -data for plausible estimates of the steepness parameter of the stock-recruitment relationship and ...

   Meeting Document : WG-FSA-SAM-06/08 : Auteur(s): A. Dunn, P.L. Horn and S.M. Hanchet (New Zealand)

10. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data

    vertical migration of Antarctic krill (Euphausia superba) associated with the brightness categories of the ... day based upon the angles between the center of the sun and the celestial horizon on the Scotia Sea ... twilight and shallowest around at evening twilight. The range of trawling depth was narrower in the certain ... during summer and early autumn, and deepened gradually from autumn and attained the maximum depth in ...

    Meeting Document : WG-EMM-04/44 : Auteur(s): K. Taki, T. Hayashi and M. Naganobu (Japan)

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