Abstract

GARCIA-ESTRADA, Carlos; PENA-SANCHEZ, Yadira Arlet  and  COLIN-MARTINEZ, Helisama. Small mammal diversity in two sites with different degree of disturbance in the Sierra Sur, Oaxaca, Mexico. Rev. Mex. Biodiv. [online]. 2015, vol.86, n.4, pp.1014-1023. ISSN 2007-8706.  https://doi.org/10.1016/j.rmb.2015.06.011.

Oaxaca ranks second in mammal diversity; however, human activities have led to its reduction. Mammalian studies conducted at the Sierra Sur of Oaxaca are scarce; therefore, the objective was to compare small mammal diversity in 2 sites with different degree of disturbance, caused by human settlements, coffee plantations and other crops. The study was conducted monthly from June 2009 to May 2010. At each site, 1 hectare was selected, where vegetation and small mammals were recorded using mist nets, Sherman traps, and visual observations. At site 1, less-disturbed, 431 individuals belonging to 21 species were captured; meanwhile at site 2, more-disturbed, 190 individuals belonging to 16 species were recorded. Tree and shrub diversity was significantly greater in site 1. Even differences in alpha diversity for small mammals (marsupials-rodents and bats) were not significant between sites, abundance was reduced for the most species.

Keywords : Richness; Alpha and beta diversity; Marsupial; Rodents; Bats.

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