Résultats de la recherche

1. Zooplankton target strength: volumetric or areal dependence?

   kHz and I MHz data were collected with a dual-beam sonar system and the 200 kHz data with a split-beam ... system. Experiments were conducted with live, tethered individuals in an enclosure filled with filtered ...

   Meeting Document : WG-Krill-94/13 : Auteur(s): D.A. Demer and L.V. Martin (USA)

2. Otolith elemental signatures reveal habitat shift of Electrona carlsbergi

   . carlsbergi hatched in two different areas, E. carlsbergi with Type I otolith could hatched in the oceanic ... across different fronts into the Antarctic waters from the warmer waters after age 1. E. carlsbergi with ... sub-Antarctic Front into the open waters (oceanic regions of APFZ) with the influence of eastward ... , otolith elemental signature analysis with coupling to water chemistry can be useful to ascertain migration ...

   Meeting Document : WG-FSA-17/65 : Auteur(s): L. Wei and G.P. Zhu

3. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   new, precautionary assessment of exploitation rate in this fishery. The effective regional catch limit ...

   Meeting Document : WG-EMM-16/21 : Auteur(s): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins

4. Progress towards validation of ageing of Dissostichus eleginoides using otoliths

   , fish have been treated with strontium to mark their otoliths for validation of subsequent age ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ... marking. Current and future work on age validation is designed to address outstanding problems with age ...

   Meeting Document : WG-FSA-04/67 : Auteur(s): K. Krusic-Goluband R. Williams (Australia)

5. Effect of missing modes on calibration sphere target strengths (ICES CM 1996/b: 37, Fish Capture Committee)

   hypothesis is investigated in the context of reported experimental calibration trials with the SIMRAD EK500 ... tungsten carbide with 6% cobalt binder. Theoretical target strengths are computed for each sphere for the ... computed target strengths are compared with the corresponding experimental values. The working hypothesis ...

   Meeting Document : WG-EMM-96/46 : Auteur(s): Foote, K.G.

6. Dynamic model of krill Euphausia superba swarm

   insects appear to disperse according to a reaction diffusion model with a constant diffusion coefficient ... . It was found that the vertical density pattern of krills' swarm, with a mean density of up to ... 1000 individuals/m3, is consistent with the insect model predictions. That is why cohesive forms of ...

   Meeting Document : WG-EMM-95/68 : Auteur(s): Kalinowski, J., Azzali, M.

7. Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3

   Abstract:  With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... the considered cases with the different growing parameters, with the exception of the case of fishing ...

   Meeting Document : WG-FSA-92/21 Rev. 1 : Auteur(s): C.A. Moreno and P.S. Rubilar (Chile)

8. RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS

   20th century but there are few locations with data before the 1950s. In addition, assessments of change ... in this region are hampered by the strong seasonal bias in sampling, with the vast majority of data ... century, with differential warming between summer and winter months and an indication that late 20th ... changes in heat fluxes associated with the SAM. In addition, we consider the implications that long-term ...

   Meeting Document : WG-EMM-08/P03 : Auteur(s): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb

9. Zonal structure of zooplankton communities in the Southern Ocean south of Australia: results from a 2150 km continuous plankton recorder transect

   were measured at 1-min intervals in conjunction with CPR samples. Additional physical data for the ... strongly correlated with frontal/oceanographic zones. These assemblages appeared to be structured by a ... with the seasonal ice zone, south of the northern SACCF. Although Euphausia superba larvae were a ... component of both of these assemblages, this species, together with appendicularia, was most abundant south ...

   Meeting Document : WS-BSO-07/P6 : Auteur(s): Hunt, B.P.V. and G. Hosie

10. Unusual breeding by seabirds at Marion Island during 1997/98

    species with an intermediate foraging range that eat mainly crustaceans, macaroni Eudyptes chrysolophus ... chicks of rockhopper penguins fledged with a slightly heavier mass than in other years. However, for both ... /99) breeding season. The unusual breeding by most of the seabirds coincided with the El Niño Southern ... Oscillation (ENSO) event of 1997/98. This synchrony contrasts with lagged responses to ENSO events of seabirds ...

    Meeting Document : WG-EMM-03/13 : Auteur(s): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)

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