2.5 | Data analysis
Collected data were organized and entered into a worksheet for the analysis.Species diversity of mammals was analyzedfollowing Shannon and Weiner (1949) as cited in Legese et al . (2019).Shannon−Weiner diversity index was computed by the formula ( ) = ∑PilnPi , Where,Pi is the proportion of each species in the sample: lnPi is natural logarithm of this proportion.
Species evenness was evaluated using Shannon−Weiner evenness index (E).E = H’/Hmax Where, H’ is Shannon−Weiner diversity index and Hmax=lns, is natural logarithm of total number of species in each habitat. Simpson similarity index (SI) was also computed to assess the similarity mammalian species composition between the study habitats.SI = 2C/I + II = Where: C= the number of common species to the habitats, I= the number of species in habitat one, II= the number of species in habitat two.The relative abundance of each species was calculated by dividing the number of records of each species by the total number of records of all species in the study area. The abundance of observed mammals were categorized as “common” if they were seen during all of the surveys, “uncommon” ifthey were seen in more than half of the surveys, and “rare”if seen less than half of the surveys following Legese et al . (2019). Interview surveys and direct filed observations on the threats of mammals were presented descriptively.