Результаты поиска

1. Age, growth and size at sexual maturity of Macrourus carinatus from the CCAMLR fisheries in division 58.5.2

   samples collected during two research voyages to Heard and McDonald Islands (Division 58.5.2) in 1992 and ... for both sexes combined, resulting in values of: L8 = 635 mm, K = 0.088 and t0 =-1.8. The size at ... operations in the Heard Island region in 2000. The size at which 50% of the fish population is mature, L50 ... evident in the length-weight relationship from the two regions. Otolith and body size relationships were ...

   Meeting Document : WG-FSA-02/48 : Автор(ы): E.M. van Wijk, R. Williams and A.J. Constable (Australia)

2. Exploitation of mesoscale oceanographic features by grey-headed albatross Thalassarche chrysostoma in the southern Indian Ocean

   association with mesoscale oceanographic features, as identified by sea surface height anomalies, in the ... anomalies created by the Agulhas Return Current in the Subtropical Convergence and the Subantarctic zones ... . In contrast, during chick-rearing all tracked birds foraged to the southwest of the island, at the ... edges of anomalies along the South-West Indian Ridge. Previous work in this area has shown that these ...

   Meeting Document : WG-FSA-01/12 : Автор(ы): D.C. Nel, J.R.E. Lutjeharms, E.A. Pakhomov, I.J. Ansorge, P.G. Ryan and N.T.W. Klages (South Africa)

3. Supplement to the krill synoptic survey design in Area 48 (with participation of a Russian scientific research vessel)

   integral part of Area 48 is discussed. It is shown that in this case there shall be obtained for the first ... ° W. It is emphasized that in this way there shall be obtained the data that are important both to ... acquire knowledge in appropriateness of krill horizontal distribution over the whole Area 48, and to ... -date survey design, taking into account the operation by Russian R/V ATLANTIDA in Subarea 48.4, as ...

   Meeting Document : WG-EMM-99/43 : Автор(ы): V.A. Sushin, S.M. Kasatkina and F.F. Litvinov (Russia)

4. The influence of environmental variables and mitigation measures on seabird catch rates in the Japanese tuna longline fishery within the Australian Fishing Zone, 1991–1995

   environmental variables and mitigation measures upon catch rates of seabirds in the Japanese pelagic longline ... fishery. In the Australian Fishing Zone (AFZ) seabirds were most likely to be caught on longlines that ... were set during summer, in southern areas of the zone, and during daylight hours. However ... , interpretation of changes in catch rates resulting from the use of mitigation measures or from weather effects ...

   Meeting Document : WG-FSA-98/32 : Автор(ы): N. Brothers, R. Gales and T. Reid (Australia)

5. Preliminary review of Antarctic toothfish maturity in the Ross Sea

   toothfish Dissostichus mawsoni caught by Russian longliners in the Ross Ross Sea of the Pacific sector in ... was established that in the period of fishing, females and males with gonads at maturity stage III ... in the Ross Sea the termination of gonad maturity of toothfish takes place from March to April, and ... condition, and diameter of their large oocytes was 1075- 2331•10-6m in different years. Author(s):  S.V ...

   Meeting Document : WG-FSA-11/27 : Автор(ы): S.V. Piyanova and A.F. Petrov (Russia)

6. MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009

   local oceanographic and atmospheric conditions. Much of the observed variability in various fitness ... revealed a strong anomaly in early 2009. Above average sea temperatures, without any evidence of increased ... warm water inflow were followed by reduced icefish catches, a paucity of krill in icefish and penguin ... diets and low krill biomass in the regularly surveyed “Western Core Box”. Consequently many of the ...

   Meeting Document : WG-EMM-09/23 : Автор(ы): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)

7. QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY

   behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... longer distances moved between hauls in Area 48.1 compared to 48.2 and 48.3 reflecting the large number ... model suggested in late 1980s are proposed based on the results from this study. These analyses ... demonstrate the need for high quality year-round data on all vessels participating in the krill fishery to ...

   Meeting Document : WG-EMM-09/P05 : Автор(ы): S. Kawaguchi and S.G. Candy

8. Seabird mortality in the longline fishery for Patagonian toothfish at the Prince Edward Islands: 1996–1997

   Prince Edward Islands in October 1996, but unsanctioned fishing commenced some months before this date ... the estimated 3.8 million hooks set by permit-holders in the South African Exclusive Economic Zone ... hooks were found in birds or in bird pellets on Marion Island during 1996-97. Almost all birds killed ... were breeding adults, and there was a significant bias towards males in at least three species. More ...

   Meeting Document : WG-FSA-97/51 : Автор(ы): Boix-Hinzen, C., Enticott, J.W., Ryan, P.G., Wanless, R., Purves, M., Nel, D.C.

9. Echo integration in low signal to noise regimes: methods of noise estimation and removal

   Abstract:  The results of acoustic surveys, especially in low signal-to-noise regimes, are ... contribution to the above-threshold-signal cannot later be removed in post processing. The only solution is to ... log unthresholded data and to correct for noise in post processing. Integrated data collected at 120 ... requires that logged data have high resolution in both depth and distance. It can be applied so long as ...

   Meeting Document : WG-EMM-97/74 : Автор(ы): Higginbottom, I., Pauly, T.

10. Towards a new method for age determination in Antarctic krill, and evidence that krill shrink under natural conditions

    maintained in conditions of low food availability. Recent studies have also demonstrated that E. superba ... individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions ... reached by length-frequency analysis may be unreliable. In this study, the correlation between the body ... -length and the crystalline cone number of the compound eye was examined. Samples collected in the late ...

    Meeting Document : WG-Krill-94/17 : Автор(ы): W. de la Mare (Australia)

Страницы