Species diversity and similarity index
The Shannon diversity of mammal species was higher in the grassland (H = 2.198) and in dense forest (H=2.165), respectively, than in other habitats. However, there was no significant difference in Shannon – Wiener Index values between the four habitat types. The higher and lower evenness of the mammalian species was recorded in grassland (E = 0.5628) and natural forest (E = 0.4843). The dominance of mammalian species was recorded from the highest to the lowest in the crop land (D = 0.1881) and grassland (D = 0.1655), respectively. Shannon differing qualities, records and dominance of mammalian species were similar during the dry and wet seasons. The overall species richness of Arjo Diga forest was 19 and Shannon–Wiener Index value (H) was 2.296 and Simpson’s index of diversity showed the highestspecies diversity (0.8406) in the study area. Among the four habitats, more closeness of mammalian species was watched between shrubs and crop land (0.55) and the least similarity observed between grassland vs. dense forest (0.48)(Figure 6).