Результаты поиска

1. Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations

   Abstract:  We develop a new approach to quantifying habitat use within the foraging ranges of ... satellite-tracked seabirds. We applied kernel estimation techniques to 167 days (3738 locations) of data ... chick rearing period of the breeding cycle at South Georgia. At this time the activity range of these ... . In contrast, kernel estimation reveals that the main foraging areas of these two sympatric ...

   Meeting Document : WG-FSA-99/19 : Автор(ы): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)

2. Variation in the distribution of Antarctic krill Euphausia superba around South Georgia

   Abstract:  Between 1980 and 1997 British Antarctic Survey carried out 11 cruises in the region of ... South Georgia. Here we summarize the length-frequency distributions of krill caught on each of these ... cruises and look particularly at differences between krill taken from the eastern and western ends of the ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ...

   Meeting Document : WG-EMM-97/47 : Автор(ы): Daly, H.I., Murray, A.W.A., Watkins, J.L.

3. Distribution of Soviet commercial fleet at krill fishery in the South Orkneys subarea (Subarea 48.2) during 1989/90

   Abstract:  The results of analysis of haul by haul catch statistics of Soviet commercial fleet ... . Actually during the whole season fishing vessels worked in one fishing ground off the north-western edge of ... 6.9-7.1 t/hour by May-June. Stability of the fishing ground is stipulated by peculiarities of the area ... hydrodynamics, such as availability of sustained doubling current around Islands and high water disturbance ...

   Meeting Document : WG-EMM-97/50 : Автор(ы): Sushin, V.A.

4. A comparison of Antarctic krill (Euphausia superba Dana) caught by nets and taken by macaroni penguins (Eudyptes chrysolophus Brandt): evidence for selection?

   , we examined the potential selection of different length and maturity stages of Antarctic krill ... probability of obtaining length-frequency distributions of krill different from that obtained from the net ... distributions that were statistically different from the original distribution of krill caught in nets on 76 out ... of 100 trials. Nevertheless, these differences were smaller than those found between the penguin ...

   Meeting Document : WG-EMM-96/08 : Автор(ы): Croxall, J.P., Hill, H.J., Trathan, P.N., Watkins, J.L.

5. Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1993 winter and 1993/94 pup-rearing season

   Abstract:  Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ... winter the number of entangled seals was only 39% of the record 1992 total, but still 5 times the numbers ... in 1990 and 1991. Nearly all animals were juveniles, half with severe injuries and the proportion of ... females (40%) was the highest yet reported. The proportion of animals entangled in packaging bands was the ...

   Meeting Document : SC-CAMLR-XIII/BG/03 : Автор(ы): Delegation of United Kingdom

6. Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994

   Abstract:  The diet composition of the icefish Champsocephalus gunnari caught in the Subarea 48.3 ... in February/March 1994 was analyzed using the frequency of occurrence (%) method. Krill (Euphausia ... Georgia, in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish ... in common levels, equivalent to those of previous years (e.g. 1985, 1992). However, high proportions ...

   Meeting Document : WG-FSA-94/27 : Автор(ы): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)

7. Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia

   Abstract:  Foremost in the elucidation of accurate population dynamics parameters in fish is a ... necessity for an errorless estimation of age. Age determination can provide basic life history information ... used annual rhythmic deposition in calcified tissues as time marks but, due ts the lack of distinct ... periodicity in Antarctic hydrographic conditions, age determination of Antarctic fish has proven to be ...

   Meeting Document : SC-CAMLR-VI/BG/43 : Автор(ы): R. Radtke (USA)

8. Update on the external review of the Generalised Yield Model (GYM) software and manual

   Abstract:  In 2003, WG-FSA requested that the Secretariat supervise an external review of the GYM ... included: • Members providing guidance on the scope of the review; • Members proposing appropriate ... independent experts to conduct the review; • Reviewer to complete the review by end of June 2004 and report to ... for expressions of interest for the review was made in March 2004 (SC CIRC 04/06); the deadline for ...

   Meeting Document : WG-FSA-SAM-04/05 : Автор(ы): CCAMLR Secretariat

9. Updated impact assessment framework to estimate the cumulative footprint and impact on VME taxa of bottom longline fisheries in the CCAMLR Area

   estimate the likely impacts of bottom longline fishing on Vulnerable Marine Ecosystems (VMEs), as required ... by Conservation Measure 22-06. The most recent iteration of the impact assessment (Sharp 2010) was ... assessments for all gear types combined at the scale of entire fisheries. Both WG-SAM and WG-EMM gave specific ... account of the specific recommendations of WG-SAM and WG-EMM 2010 and incorporating new information ...

   Meeting Document : WG-FSA-10/31 : Автор(ы): B.R. Sharp (New Zealand)

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

    Abstract:  We analysed summer diet and fledging mass of macaroni penguins Eudyptes chrysolophus ... 2010. Crustaceans were the main prey accounting for over 90 % of the diet by mass. Antarctic krill ... (Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ...

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

Страницы