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Stephen Blake, Charles B. Yackulic, Fredy Cabrera, Washington Tapia, James P. Gibbs, Franz Kümmeth and Martin Wikelski Vegetation dynamics drive segregation by body size in Galapagos tortoises migrating across altitudinal gradients Journal of Animal Ecology 82

Version of Record online: 21 NOV 2012 | DOI: 10.1111/1365-2656.12020

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The authors demonstrate stereotypic migration by Galapagos tortoises and identify vegetation dynamics as the principle driver. Migration is size-biased toward larger individuals, which, with a lack of sex-based behavioural differences distinguishes this system from other partial migratory systems. This work showcases a good model system for studying the causes and consequences of migration.

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