Résultats de la recherche
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A tale of two islands: contrasting fortunes for sub-Antarctic skuas at the Prince Edward Islands
Abstract: Subantarctic skuas Catharacta antarctica are key predators of burrowing petrels at sub ... population of introduced house mice Mus musculus. Breeding skuas were more widespread, occurred at greater ... supported twice as many non-breeding birds. Burrowing petrels comprised 96% of prey in skua middens at ... of breeding pairs at Prince Edward Island increased from 2001 to 2008, probably as a result of better ...
Meeting Document : WG-EMM-10/P03 : Auteur(s): P.G. Ryan, P.A. Whittington and R.J.M. Crawford
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Foraging range and at-sea locations of female Antarctic fur seals, Cape Shirreff, Livingston Island, from 1999–2002
distribution and range of foraging females rearing pups at Cape Shirreff, Livingston Island, Antarctica. We ... ): M.E. Goebel, S.N. Sexton and D.P. Costa (USA) Title: Foraging range and at-sea locations of female ... from their colony to feeding areas hours to days offshore, returning periodically to suckle. Outside of ... survival but that of her young. As such, a fundamental component to understanding the survival and ...
Meeting Document : WG-EMM-02/53 : Auteur(s): M.E. Goebel, S.N. Sexton and D.P. Costa (USA)
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The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery
Paper Title: The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land ... foraging range of the birds at Béchervaise Island considerably exceeds the 15 to 50 km determined for birds ... , Antarctica, and its overlap with the krill fishery Abstract / Description: The foraging ranges of six female ... and four male Adélie penguins breeding at Béchervaise Island near Mawson Station (Mac. Robertson Land ... WG-CEMP-92/36 THE FORAGING RANGE OF ADELIE PENGUINS AT ... foraging range of the birds at Bechervaise Island considerably exceeds the 15 to 50 km determined for ... of the continental shelf at approximately the same speed (1 km/hr) as the prevailing currents. All ... considerable concentrations at the shelf break along the coast of Mac. Robertson Land (Higginbottom et al ...
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
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The effect of different methodologies used in penguin diet studies at three US AMLR predator research sites: Admiralty Bay, Palmer Station and Cape Shirreff
Abstract: Diet studies are a key component of the CCAMLR predator monitoring program as they ... provide direct assessments of the prey types and amounts of import to predators, which, in turn, are ... hypothesized to influence variability in related parameters such as breeding success, foraging trip durations ... and chick fledging weights. Given the importance and interdependence of diet studies to monitoring ...
Meeting Document : WG-EMM-99/46 : Auteur(s): W. Trivelpiece, S. Trivelpiece (USA) and K. Salwicka (Poland)
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Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
Abstract: This paper describes the diet and foraging behaviour of Ad6lie penguins at B6chervaise ... island. Evidence from analyses of foraging location, foraging trip duration and diet led to the ... Island during 1998-99, a season of high chick mortality. One thousand nests perished in the three weeks ... following first hatch, when the chicks were very small. A total of 802 chicks reached crèche age from 1880 ...
Meeting Document : WG-EMM-99/25 : Auteur(s): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
Paper Title: Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ... mass is shown to provide a good indicator of local krill density. The index is likely to be little ... responds rapidly to changes in krill density and therefore can provide indications of short-term variations ... CONDITION INDICES OF MACKEREL ICEFISH AT SOUTH GEORGIA FROM 1972 TO 1997 I. Everson %3 British Antarctic ... correlation coefficients were 0.951 for males and 0.898 for females, both of which were significant at the 1 ... , is normal in one area but low in the other. There are also some instances of low C, at both South ... success. Year ct FUSE CEPE MAPE Nov Dec Jan Feb Mar Trip Surv Meal S Meal S Comparison of Condition ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Auteur(s): Everson, I. and K.-H. Kock
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Variation in reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implications for southern ocean monitoring studies
success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... . The fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy ... : Variation in reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implications ... Abstract: Aspects of the reproductive performance of Black-browed, Grey-headed and Wandering ...
Meeting Document : SC-CAMLR-VI/BG/15 : Auteur(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Variation or reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implication for Southern Ocean monitoring studies
success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... . The fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy ... : Variation or reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implication ... Abstract: Aspects of the reproductive performance of Black-browed, Grey-headed and Wandering ...
Meeting Document : WG-CEMP-87/13 : Auteur(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Comparisons in prey distribution between inshore and offshore foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
; their ventral light organs may become easier target for predators at night. Thus, aggregation pattern of ... Abstract: At Seal Island breeding predators which incorporated an overnight period into their ... foraging trip such as Antarctic fur seals (Arctocephalus gazella) and overnight foraging chinstrap penguins ... advantages are considered for visual predators to feed in the slope/offshore region at night:(l) krill showed ...
Meeting Document : WG-EMM-96/49 : Auteur(s): Ichii, T., Bengtson, J.L., Boveng, P., Cameron, M.F., Naganobu, M., Meyer, W.R., Hiruki, L.M., Takao, T., Jansen, J.K., Kawaguchi, S.
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An assessment of temporal variability and interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
of their correlation with breeding success. This analysis showed that lower weights of females at the ... Abstract: We examined temporal variability in a series of CEMP parameters collected over the ... period 1991/92 to 2001/02 on Adélie penguins at Béchervaise Island. Parameters relating to chick survival ... the correlation of each parameter with breeding success. Breeding success was measured in terms of 1 ...
Meeting Document : WG-EMM-02/46 : Auteur(s): L.M. Emmerson, J. Clarke, K. Kerry and C. Southwell (Australia)