[OANNES Foro] Changes in Wind Pattern Alter Albatross Distribution and Life-History Traits

[Mario Cabrejos]

Science 13 January 2012: 
Vol. 335 no. 6065 pp. 211-214 
DOI: 10.1126/science.1210270 

Changes in Wind Pattern Alter Albatross Distribution and Life-History Traits
Henri Weimerskirch1,*, Maite Louzao1,2,?, Sophie de Grissac1, Karine Delord1
1Centre d'Etudes Biologiques de Chizé, CNRS, 79360 Villiers en Bois, France. 2Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany. ?? Present address: Instituto Español de Oceanografía, CO Xixón, Camín de l'Arbeyal s/n, 33212 Xixón, Spain. ?*To whom correspondence should be addressed. E-mail: henriw en cebc.cnrs.fr
Abstract
Westerly winds in the Southern Ocean have increased in intensity and moved poleward. Using long-term demographic and foraging records, we show that foraging range in wandering albatrosses has shifted poleward in conjunction with these changes in wind pattern, while their rates of travel and flight speeds have increased. Consequently, the duration of foraging trips has decreased, breeding success has improved, and birds have increased in mass by more than 1 kilogram. These positive consequences of climate change may be temporary if patterns of wind in the southern westerlies follow predicted climate change scenarios. This study stresses the importance of foraging performance as the key link between environmental changes and population processes.



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