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Article
Ari E. Martínez, Auteur ; Scott K. Robinson, AuteurABSTRACT Mixed-species flocks are formed on the basis of both positive and negative species interactions. We use foraging behavior in two different flock types to interpret the extent to which core species minimize niche overlap to reflect negat[...]
Article
Ari E. Martínez, Auteur ; David F. Aranibar, Auteur ; Edwin R. Gutierrez, AuteurCensuses were conducted from 15 June to 6 July and from 15 to 24 October 2003 throughout Lake Titicaca to determine the current distribution and abundance of the Titicaca Flightless Grebe Rollandia microptera. We surveyed 22 of an estimated 25 l[...]
