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Ecología en Bolivia

On-line version ISSN 2075-5023

Abstract

REVOLLO-CADIMA, Susana G.; RICO C., Adriana; PACHECO, Luis F.  and  SALAZAR-BRAVO, Jorge. Community structure and abundance of small rodents at the wave front of agroforestry and forest in Alto Beni, Bolivia. Ecología en Bolivia [online]. 2020, vol.55, n.1, pp. 16-25. ISSN 2075-5023.

Studies on the distribution of species and community structure are essential to understand the effects that environmental change may have on them, regardless of whether it was climatic or human-induced. These studies are particularly important in the case of rodent communities, as they are highly diverse and can often serve as biodiversity indicators. The study area, Union Ipiri (La Paz, Bolivia) is a representative of several communities at the front end of human disturbance. The objective of the study was to determine the composition and diversity of rodent communities in two types of habitats, native forest and agroforestry crop, the latter as an anthropogenic disturbed habitat, during the dry season of 2014. We collected 256 individuals, belonging to 10 species of rodents and three species of marsupials. The most abundant species were Oligoryzomys microtis chaparensis, Oligoryzomys sp., Euryoryzomys nitidus and Akodon dayi. Both the richness and diversity showed no significant differences between the two habitats, while the abundance of rodents was higher in the agroforestry crops. Oligoryzomys sp. was the species with the highest proportion of males. And all the above-mentioned four species showed more adults individuals, as expected for the sampled season.

Keywords : Abundance; Community; Crops; Diversity Índex; Forest.

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