Chick provisioning and breeding success of Adélie penguins at Béchervaise Island over eight successive seasons

Data on foraging trip durations and meal sizes were collected by means of an automated monitoring system from breeding Adélie penguins (Pygoscelis adeliae) at Béchervaise Island over eight breeding seasons, commencing in 1991-92. Significant interannual differences in duration of foraging trips, mea...

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Veröffentlicht in:	Polar biology 2002, Vol.25 (1), p.21-30
Hauptverfasser:	CLARKE, Judy, KERRY, Knowles, IRVINE, Lyn, PHILLIPS, Brad
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal and plant ecology Animal behavior Animal reproduction Animal, plant and microbial ecology Animals Autoecology Aves Biological and medical sciences Birds Breeding seasons Breeding success Demecology Food availability Food security Foraging behavior Fundamental and applied biological sciences. Psychology Hatching Marine Predation Pygoscelis adeliae Seasons Vertebrata
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Zusammenfassung:	Data on foraging trip durations and meal sizes were collected by means of an automated monitoring system from breeding Adélie penguins (Pygoscelis adeliae) at Béchervaise Island over eight breeding seasons, commencing in 1991-92. Significant interannual differences in duration of foraging trips, meal sizes and diet composition were observed. These parameters were correlated with breeding success and fledging masses, and provide useful indicators of food availability during the breeding season. Chicks were particularly vulnerable to a decreased availability of food during the first 3 weeks after hatching.[PUBLICATION ABSTRACT]
ISSN:	0722-4060 1432-2056
DOI:	10.1007/s003000100307