Résultats de la recherche

1. Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea

   males on the second incubation trip. A high number of chicks died during the post-hatching stage and the ... extensive and persistent sea-ice and strong winds with snowfalls in December. First incubation trips by ... breeding success was low with 0.3 chicks crèched per nest with eggs. The mean crèching date was also ... in 2003. It is suggested in this paper that the ability of penguins to cope with severe short-term ... trip. A high number of chicks died during the post-hatching stage and the breeding success was low ... -rearing period compared with the 1999 and 2001 breeding seasons, in which sea-ice conditions and trip ... to year, except for crèching date which was later in 2003. Despite the consistency in timing of ... strong winds with snowfalls in December. First incubation trips by females were signifi cantly longer ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Auteur(s): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi

2. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

   , together with suggested further areas for investigation. Amongst the key inferences of the study are that ... began in the late 1960s, with catches peaking at over half a million tonnes in the 1981 season, and ... taken between 1973 and 2001 (Miller, 2002). The fishery has been stable for the past nine years with ... results and the assumptions on which they are based is discussed, together with suggested further areas ... ). Species were harvested sequentially, with many heavily depleted as a con- sequence. Initially seals were ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth

3. The effects of monitoring procedures on Adélie penguins

   incubation period resulted in increased foraging trip durations and reduced breeding success. Attachment for ... single or multiple foraging trips post-hatching caused no significant increase in foraging trip durations ... birds with new bands was 28% lower than that of birds with bands older than one year. However, the ... slightly lower return rate (64%) for non-recaptured birds banded for two years compared with the range of ... , df = 3, N.S.) and the variation is similar to that between males and females each year. It is also ... occur after more than one year of band wear remains to be determined from future years' return rates ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Auteur(s): Clarke, J. and K. Kerry

4. Differentiation of independent populations of Antarctic krill

   -populations is expected to correspond with the number of quasi-stationary cyclonic water circulations. At ... ) population of E. superba" (Makarov, 1972). In a later paper (Makarov, Maslennikov, 1975) after the ... waters. Biologiya Morya, N 3, P. 37-43. Marr J.W.S. 1962. The natural history and geography of the ... expected to correspond with the number of quasi-stationary cyclonic water circulations. At present, at ... the necessity of setting krill catch quotas for each fishing country in the near future. These ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Auteur(s): USSR

5. Telemetry monitoring of ecological resources

   including paper recorders and data recording using microprocessors with semiconductor memory. Satellite ... with adhesive will be lost during the animals molt and thus have a useful life of a year or less ... 1960s. Monitoring activity has steadily increased since that time with an increase in numbers and ... 3. Church, K.E. (1980). Expanded radio tracking potential in wildlife investigations with the use ... . (1972). Radio-tagging falconiform and strigiform birds. Raptor Research ~(3) : 93-102 12. Siniff ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Auteur(s): Kuechle, V.B.

6. Analysis of haul data from the South Georgia krill fishery

   existed between years, with 1995 being a better season than either 1994 or 1996. Aspects of mesoscale ... several hauls were undertaken by each vessel (average 7.9 in 1993,9.9 in 1995, and 7.0 in 1996), with ... establish the time required for each phase of the fishing operation. The times associated with shooting and ... hauling the net were usually short and showed little variation, whereas the time associated with the ... deviation (SD) and median with first and third quartile. Year 1994 1995 1996 n 2 025 3 035 2 854 ... undertaken. In each year the first (Q1) and third (Q3) quartiles were equidistant about the median, with ... distances which were larger. However, the pattern each year was generally similar, with many hauls ... average size of catches in each year, with Poland consistently taking smaller hauls (Table 4). An ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Auteur(s): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes

7. Antarctic krill and ecosystem management – from Seattle to Siena

   (2002 – this volume), with the three papers documenting developments during CCAMLR’s first 20 years of ... to be consistent with the objectives of the CAMLR Convention, particularly its Article II. Emphasis ... for Antarctic krill (Euphausia superba) has existed since the early 1970s, with catches peaking at ... prolonged winter sea-ice cover leads to early krill maturation and spawning with subsequent enhanced ... ecosystem concerns, precautionary approaches and inte- gration with non-fi sheries interests. Later ... in conjunction with later work (e.g. Bengtson, 1984; Lubimova et al., 1985), SC-CAMLR recognised in ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Auteur(s): Miller, D.G.M

8. An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   for differences in the extent of identification of early larval stages. Likewise, the time of year ... an enormous amount of data on Southern Ocean (SO) zooplankton, mostly on their distribution with a ... assist SO food-web modellers or those with limited specialist knowledge of SO zooplankton. First, a brief ... overview is provided of the diversity and basic biology of SO zooplankton, with an emphasis on abundance ... . Their life cycles involve reproduc- tion and early larvae feeding in summer, with later lipid-rich ... the extent of identification of early larval stages. Likewise, the time of year, depth of sampling ... ; Kosobokova, 1994; Ward and Shreeve, 1995) with 3.4–3.8% of their body C lost via respiration. This fits ... year (Schmidt et al., 2006, 2011, 2012). This copepod ingestion coincided with feeding on benthically ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Auteur(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie

9. Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)

   was found that the distribution of krill swarms corresponds largely with areas where currents turn ... differences in krill biomass are undoubtedly associated with the volume of krill brought here by waters of the ... the island (Marr, 1962; MacIntosh, 1972; Makarov et al., 1980). As opposed to aggregations in the ... whole year depend upon the variability of water dynamics in the mesoscale. Variability associated with ... of the island (0.75 g/m3). Calculations showed that by comparison with June of the same year biomass ... as correct for the operation of fishing vessels. Summary data from early research in the area (1972 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Auteur(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin

10. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

    poorly understood with great uncertainty surrounding their trophic ecology and life histories. Recent ... undertaken if there is continued interest in the fishery. However, low market value and interest coupled with ... , 1972), P. formosa (Henderson, 1888) and P. anamerae (Macpherson, 1988) occur along with Neolithodes ... some species (Table 3) as well as length–weight relationships (Table 4). Growth In common with all ... distributed globally in the deep sea, with a few genera occurring inter-tidally at high latitudes in the ... poorly understood with great uncertainty surrounding their trophic ecology and life histories. Recent ...

    Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Auteur(s): Belchier, M., T. Peatman and J. Brown

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