Moult of the emperor penguin: travel, location, and habitat selection
نویسندگان
چکیده
منابع مشابه
Full circumpolar migration ensures evolutionary unity in the Emperor penguin
Defining reliable demographic models is essential to understand the threats of ongoing environmental change. Yet, in the most remote and threatened areas, models are often based on the survey of a single population, assuming stationarity and independence in population responses. This is the case for the Emperor penguin Aptenodytes forsteri, a flagship Antarctic species that may be at high risk ...
متن کاملEmperor penguin mates: keeping together in the crowd.
As emperor penguins have no breeding territories, a key issue for both members of a pair is not to be separated until the egg is laid and transferred to the male. Both birds remain silent after mating and thereby reduce the risk of having the pair bond broken by unpaired birds. However, silence prevents finding each other if the pair is separated. Huddles-the key to saving energy in the cold an...
متن کاملCoordinated Movements Prevent Jamming in an Emperor Penguin Huddle
For Emperor penguins (Aptenodytes forsteri), huddling is the key to survival during the Antarctic winter. Penguins in a huddle are packed so tightly that individual movements become impossible, reminiscent of a jamming transition in compacted colloids. It is crucial, however, that the huddle structure is continuously reorganized to give each penguin a chance to spend sufficient time inside the ...
متن کاملEmperor penguin body surfaces cool below air temperature.
Emperor penguins Aptenodytes forsteri are able to survive the harsh Antarctic climate because of specialized anatomical, physiological and behavioural adaptations for minimizing heat loss. Heat transfer theory predicts that metabolic heat loss in this species will mostly depend on radiative and convective cooling. To examine this, thermal imaging of emperor penguins was undertaken at the breedi...
متن کاملDemographic models and IPCC climate projections predict the decline of an emperor penguin population.
Studies have reported important effects of recent climate change on Antarctic species, but there has been to our knowledge no attempt to explicitly link those results to forecasted population responses to climate change. Antarctic sea ice extent (SIE) is projected to shrink as concentrations of atmospheric greenhouse gases (GHGs) increase, and emperor penguins (Aptenodytes forsteri) are extreme...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2000
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps204269