At surface behaviour of emperor penguins from Pointe Géologie, Adélie Land, Antarctica, from expedition DDU 2005 ...

• Main Authors: Zimmer, Ilka, Wilson, Rory P, Gilbert, Caroline, Beaulieu, Michaël, Ancel, André, Plötz, Joachim, Bornemann, Horst
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: Marine endotherm; DDU2005; Dumont d´Urville Station; Marine Mammal Tracking MMT; Antarc*; Antarctic; Antarctica; Emperor penguins; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.633712; https://doi.pangaea.de/10.1594/PANGAEA.633712

The foraging distributions of 20 breeding emperor penguins were investigated at Pointe Géologie, Terre Adélie, Antarctica by using satellite telemetry in 2005 and 2006 during early and late winter, as well as during late spring and summer, corresponding to incubation, early chick-brooding, late chick-rearing and the adult pre-moult period, respectively. Dive depth records of three post-egg-laying females, two post-incubating males and four late chick-rearing adults were examined, as well as the horizontal space use by these birds. Foraging ranges of chick-provisioning penguins extended over the Antarctic shelf and were constricted by winter pack-ice. During spring ice break-up, the foraging ranges rarely exceeded the shelf slope, although seawater access was apparently almost unlimited. Winter females appeared constrained in their access to open water but used fissures in the sea ice and expanded their prey search effort by expanding the horizontal search component underwater. Birds in spring however, showed ... : The foraging distributions of 20 breeding emperor penguins were investigated at Pointe Géologie, Terre Adélie, Antarctica, by using satellite telemetry in 2005 and 2006. Data derived from transmitter deployments in early and late austral winter, late spring and summer, correspond to incubation, early chick-brooding, late chick-rearing and the adult pre-moult period, respectively. ARGOS satellite location data of 15 emperor penguins correspond to austral spring and summer distribution of the birds. Data sets detailing the winter distribution (n = 5; archived elsewhere) were provided by A. Ancel, Centre d'Ecologie et Physiologie Energétiques, CNRS, Strasbourg, France. ...