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Avian and mammal characterization at northern savannas at Bolivar State, Venezuela Caracterizacion de la avifauna y mastofauna de las sabanas del norte del Estado Bolivar, Venezuela

Avian and mammal characterization at northern savannas at Bolivar State, Venezuela Caracterizacion de la avifauna y mastofauna de las sabanas del norte del Estado Bolivar, Venezuela

Acta Cientifica Venezolana 481: 47-57

ISSN/ISBN: 0001-5504

The avian and mammal fauna associated with the savannas around the Orinoco-Caura rivers confluence in Bolivar State are described. Forty three mammal and 182 birds species were recorded in six different environments, wet savanna, open savanna, treeless savanna, "mata", gallery forest and "morichal", being gallery forest (102 species) and treeless savanna (79 species) the richest ones. The most abundant groups were Chiroptera (24) (among mammals) and Tyrannidae (28) (among birds). The trophic structure was analysed in every environment. Insectivores, seedeaters and frugivores-insectivores birds, and frugivores and insectivores mammals were the best represented guilds. Fauna composition was compared with other studies carried out in adjacent areas. There were found species from Guayana, Amazonas and, specially, Uanos biogeographical regions.

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Accession: 037905417

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