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Spatial Heterogeneity in Resource Distribution Promotes Facultative Sociality in Two Trans-Saharan Migratory Birds

AutorCortés-Avizanda, Ainara ; Almaraz, P.; Carrete, Martina ; Sánchez-Zapata, José A.; Delgado Huertas, Antonio ; Hiraldo, F. ; Donázar, José A.
Fecha de publicación22-jun-2011
EditorPublic Library of Science
CitaciónPLoS ONE 6(6): e21016 (2011)
ResumenMigrant populations must cope not only with environmental changes in different biomes, but also with the continuous constraints imposed by human-induced changes through landscape transformation and resource patchiness. Theoretical studies suggest that changes in food distribution can promote changes in the social arrangement of individuals without apparent adaptive value. Empirical research on this subject has only been performed at reduced geographical scales and/or for single species. However, the relative contribution of food patchiness and predictability, both in space and time, to abundance and sociality can vary among species, depending on their degree of flexibility.
Versión del editorhttp://dx.doi.org/10.1371/journal.pone.0021016
URIhttp://hdl.handle.net/10261/47536
DOI10.1371/journal.pone.0021016
ISSN0027-8424
E-ISSN1091-6490
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