Résultats de la recherche

1. Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment

   method with which to monitor foraging trip duration in penguins by the CCAMLR (Commission for the ... on: (i) the effects of radio transmitter attachment on nest attendance, foraging trip duration, nest ... may be no difference between trip durations obtained by applying the transmitters to one or both ... Transmitters Early Brooding: Trip 13.4 14.7 14.6 17.1 (6.0, 99) (4.7, 16) (6.0, 16) (9.6, 15) Visit ... accepted as a standard method with which to monitor foraging trip duration in penguins by the CCAMLR ... trip duration, nest failure, and reproductive success in chinstrap penguins; (ii) differences in these ... cm2 front section area), there may be no difference between trip durations obtained by applying the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Auteur(s): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen

2. Scientific Abstracts 1995–1996

   correlated to foraging trip duration (mean of 4.21 ± 0.54 days; r2 = 0.5, P < 0.04). There were no ... distance travelled during the foraging trip. There was, however, a close negative sigmoidal relationship ... mass gain during a foraging trip had a positive relationship to the time spent at sea (r2 = 0.58, P ... early years of development of the ecosystem monitoring program, sea-ice data, especially data derived ...

   Document : Site Section: Publications

3. Birds: Trophic modelling of the Ross Sea

   individual bird populations. Birds can also become entangled in lost fishing gear, disturbed by fishing ... weigh 120–160 g. Males fast while females forage between egg laying and hatching in (mid-July/early ... fledging (Dewey 1999; Shirihai 2002). Around late December/early January adults leave the breeding ... population per year. Egg loss and early chick mortality for one large Ross Sea colony was reported as about ...

   Document : Site Section: Publications

4. The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   the low Antarctic were made in the late 1970s/early 1980s. Those estimates were constrained by a ... were extended to the mesopelagic realm and the high-Antarctic Zone in the late 1980s and early 1990s ... in the late 1970s/ early 1980s. Those estimates were constrained by a paucity of biomass estimates ... mesopelagic realm and the high-Antarctic Zone in the late 1980s and early 1990s when these areas were ... early whaling at South Georgia that fish in the Southern Ocean were first commercially harvested ... and Tarverdiyeva 1972, 1978; Tarverdiyeva 1972, 1982; Linkowski and Rembiszewski, 1978; Shust and ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Auteur(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams

5. The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery

   Soviet Union, Korea and Japan. The Soviet Union was most active in the region during the early 1980s ... period from early laying to early fledging. The periods over which each bird was tracked, the stage of ... Table 1: Details of each foraging trip by Ad€lie penguins as determined by satellite tracking. The ... E S 1396A F 25 November 1991 34 65.7° 56.8° 341 307 66.8° flrst foraging trip post travelled along ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Auteur(s): Kerry, K.R., J.R. Clarke and G.D. Else

6. A declining trend in the abundance of Notothenia rossii marmorata and Notothenia gibberifrons observed in fjords in two sites in the South Shetland Islands

   depletion of the stocks due to commercial exploitation in the area in the early 1980s. File:  15-Barrera-Oro ... to the catches of N. neglecta. A similar declining trend had been reported in the 1960s and 1970s for ... stocks due to commercial exploitation in the area in the early 1980s. Resume La tendance au declin ... . rossii H N. gibberifrons K YJIOBaM N. neglecta. B 1960-x H 1970-x ro~ax 6bIJIH nOJIYlIeHbI CBe~eHHSI 0 ... . neglecta. A similar declining trend had been reported in the 1960s and 1970s for neighbouring sites in the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 263–274 : Auteur(s): Barrera-Oro, E. and E. Marschoff

7. Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements

   Discovery Reports provide information on krill over much of its range (Marr, 1962; Mackintosh, 1973), and ... distribution maps produced in the Discovery Reports (Marr, 1962; Mackintosh, 1973) support modern ideas of ... . METHODS The map of krill distribution produced by Marr (1962 -Figure 135, p. 394) was digitised to ... ). Figure 1: The distribution of Euphausia superba derived from di itising Figure 135, p. 394 in Marr (1962 ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Auteur(s): Nicol, S., A.J. Constable and T. Pauly

8. Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia

   and Dorovskikh (1991), with an age/length key from 1972 used to devise a separate age composition ... located hauls around South Georgia during the 1972 austral summer and from which the age/length key in ... . The age/length key from 1972 was obtained from a period several years after large-scale fishing ... the first half of 1972, which can be used to estimate size at age; these results also differ from ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Auteur(s): Everson, I

9. Winter distribution of chinstrap penguins from two breeding sites in the South Shetland Islands of Antarctica

   tracked to the vicinity of the South Orkney Islands where its signal was lost in April, a distance of 800 ... Islands until its signal was lost at 580 30’ S, 360 10’ W in late July, over 1300 km from its breeding ... and range in the middle of the past century. Author(s):  W.Z. Trivelpiece, S. Buckelew, C. Reiss and ...

   Meeting Document : WG-EMM-06/17 : Auteur(s): W.Z. Trivelpiece, S. Buckelew, C. Reiss and S.G. Trivelpiece (USA)

10. MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA

    conducted in the early, middle and late period of the summers of 2001 to 2005, together with krill ... abundance was highest during the middle of the summer in 3 years and in the late period in 2 years; in the ...

    Meeting Document : WG-EMM-08/48 : Auteur(s): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)

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