Résultats de la recherche

1. Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia

   number of feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year ... teeth from Bird Island, South Georgia, was analyzed to estimate: 1) birth year of individuals, and 2 ... ) the number of feeding trips made by an individual’'s mother during lactation. This analysis ... feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year period ... from Bird Island, South Georgia, was analyzed to estimate: 1) birth year of individuals, and 2) the ... number of feeding trips made by an individual's mother during lactation. This analysis showed that ... voyages ont ete les moins nombreux sur la periode de 20 ans. Sous presse dans Sahrhage, D. (ed ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Auteur(s): Bengtson, J.L.

2. Surface areas of seabed within the 500 m isobath regions within the South Shetland Islands (Subarea 48.1)

   Islands (Subarea 48.1) Abstract / Description:  Bathymetric maps of two major areas within the South ... Elephant Island. From the integrated datasets, areas of seabed within the 500 m isobath for six levels of ... calculated based on planar and interpolated surface area of seabed incorporating seafloor slope. Differences ... contained information on surface area, slope and aspect for each polygon (Table 1). Finally, seafloor ... SURFACE AREAS OF SEABED WITHIN THE 500 M ISOBATH FOR REGIONS WITHIN THE SOUTH SHETLAND ISLANDS (SUBAREA ... . 92038, USA Abstract Bathymetric maps of two major areas within the South Shetland Islands were ... integrated datasets, areas of seabed within the 500 m isobath for six levels of depth strata (0-50 m, 51-100 ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 133–140 : Auteur(s): Jones, C.D., S.N. Sexton and R.E. Cosgrove III

3. Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)

   should be used for future assessments and for assisting with the stratification of surveys. File ... estimates obtained from the two datasets. The best agreement was for grid squares to the north of South ... . North east corner °S °W 0– 50 50 –1 00 10 0– 15 0 15 0– 20 0 20 0– 25 0 25 0– 30 0 30 0 ... 0 15 57 47 26 20 12 8 185 18 54.5 38 0 0 19 634 690 282 130 92 63 76 1 986 19 54.5 37 28 30 270 847 ... 1 090 448 114 38 30 23 2 918 20 54.5 36 384 251 248 690 817 284 45 7 2 0 2 728 21 54.5 35 167 444 ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 167–175 : Auteur(s): Belchier, M. and P. Fretwell

4. Preliminary results of research activities of RV Evrika in the Scotia Sea in January-March 1988

   Sea and adjacent waters, accompanied by regular trawlings with an Isaac-Kidd trawl. The waters off ... in areas of the Atlantic Sector of the Southern Ocean identified for monitoring by CCAMLR. During the ... the east Scotia Sea a higher abundance of primary production was registered. The analysis of data on ... '~'-- ---''''''~ Geostrophic circulation on the surface in relation to 1 000 decibar (20 January-9 March 1988). 'I 14 ... an Isaac-Kidd trawl. The waters off South Georgia in particular were surveyed twice. Research ... identified for monitoring by CCAMLR. During the observation season the zonal drift of waters of the ... characteristic for these waters. Many icebergs were Sighted in the area. Closed water circulation was found ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 215-229 : Auteur(s): Maklygin, L.I., A.S. Fedorov, V.N. Shnar, Yu.A. Shulyakovsky, I.V. Krasovsky, Yu.D. Shuvaev and A.V. Kromsky

5. Patterns and processes in the distribution and dynamics of Antarctic krill

   models of increasing complexity be developed iteratively for variability and patchiness of krill ... critical processes to be added. An analysis of spatial distribution of krill in the Bransfield Strait area ... attraction of krill to account for the small-scale aggregations. File:  07-Levin-et-al.pdf ... intermediate scales (4-20 km). It is unfortunate that we do not yet have available comparable data for the ... DISTRIBUTION Quantitative descriptions of krill spatial distribution are necessary for two purposes. The ... a diameter smaller than 200 m, and that the observed biomass is an average for a 200 m trace. 4 ... ----------~--------~----------~--------~---------~ -2.5 -2 -1.5 -1 -0.5 o LOG FREQUENCY (cycles/km) Power spectra for krill at the 2-20 km scale ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Auteur(s): Levin, S.A., A. Morin and T.M. Powell

6. Natural mortality of grey rockcod (Notothenia squamifrons) in various areas of the Indian sector of the Southern Ocean

   were 0.38, 0.36 and 0.33 for the above areas respectively. These values are comparable with those ... derived for most notothenioids. File:  11-Zaitsev.pdf ... rockcod (Notothenia squamifrons) on the Ob and Lena Banks and the Kerguelen Shelf were determined using ... and Lena Banks and 1969 to 1972 for the Kerguelen Islands). Data on 2 to 15 year old fish were used ... (T m), comprising not less than 0.5% of the total sample (Babayan et al., 1984). For an exploited ... notothenioid fish for two reasons. First, the dependence worked out by Pauly referred to tropical fish and ... on the Ob and Lena Banks these were 6.6 and 6.2 years respectively, while for the Kerguelen Islands ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 141–146 : Auteur(s): Zaitsev, A.K.

7. Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96

   penguins (E. chrysocome) between 1985/86 and 1995/96 was measured. For macaroni penguins, averages of 0.48 ... eggs and 0.35 chicks were hatched and fledged respectively for each clutch laid. Corresponding averages ... for rockhopper penguins were 0.68 eggs and 0.48 respectively. The largest of the three macaroni ... penguin colonies investigated decreased in size over the study period, while the other two remained stable ... two species, and for the colonies at Van den Boogaard River (Table 3). On average, macaroni ... influence on these two penguins at different stages of the reproductive cycle - before or at laying for ... a significant correlation in overall breeding success at these two localities. Implications for ... breeding parameters for two closely related species of penguin at Marion Island shown in this paper also ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Auteur(s): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford

8. By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1) during the 1995/96 season

   cruise and an experimental deep-sea longline fishing cruise targeting Patagonian toothfish (Dissostichus ... at the limit of their bathymetric range. An abundance index was used to show bathymetric and ... identification carried out composition, with the target species comprising for the two species of skates. The ... differences in length were observed in the distributions of the two species of skates. For B . ivvasa ... two journal referees for their constructive comments and also to Gillian von Bertouch for her ... in use on only two fishing grounds (Kerguelen and Macquarie Islands). Statistical and biological ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Auteur(s): Duhamel, G., P. Pruvost and D. Capdeville

9. Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3

   size models should be derived for each fish population under investigation. The length of fish chosen ... explained over 60% of the variation of the data, an improvement on the 30% obtained when using otolith ... grenadier, Subarea 48.3 0 10 20 30 40 50 60 70 80 90 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 ... equations of the fi tted lines are given in the text. 90 80 70 60 50 40 30 20 10 0 40 35 30 ... from Heard and Macquarie Islands. 0 10 20 30 40 50 60 70 80 90 10 12 14 16 18 20 22 Otolith ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Auteur(s): Morley, S. and M. Belchier

10. Distribution and relative abundance of juvenile icefish (Champsocephalus gunnari) from a trawl survey of the South Georgia shelf in June–July 1985

    ) was employed. This trawl is made of kapron fibre netting with 20-45 mm mesh size with an inside ... a towing speed of 3.5 knots. An echo depth-sounder was attached to the headline for monitoring ... the age of one year (O-group), were used for the calculation of abundance indices. Catchability ... ) but not less than two. During the survey the Soviet 13.6 m Juvenile Trawl (designed in AtlantNIRO ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 55-63 : Auteur(s): Boronin, V.A., G.P. Zakharov and V.P. Shopov

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