Tarsius syrichta, a Mindanao Faunal Region
endemic species and a nearly- threatened species was found to be uncommon at lower elevations in this study.
Since conditions within faunal regions
are fairly uniform, it is curious that we find a large number of species sharing the same water.
MIBNP is in the central part of Mindoro, the smallest among the five major centers of endemicity or the so-called faunal regions
in the country, the DENR said.
The tribe Cryptotympanini Handlirsch, 1925 currently includes 20 genera that are distributed in all faunal regions
except continental Africa (Sanborn 2013).
Matthews and Robison (1988) divided Arkansas into 101 drainage units, and used multivariate analysis of species abundances in 2323 collections to define fish faunal regions
of the state.
(1990) used cluster analysis and detrended reciprocal averaging (DRA) to examine the distributional data for terrestrial reptiles and found discrete faunal regions
with complex zones of transition between the regions (Fig.