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 (H´ ) =
∑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.