Diversity of bat species in Gunung Tunak nature tourism Park, Central Lombok, West Nusa Tenggara

Research on the diversity of bat species in the Gunung Tunak Nature Tourism Park, Mertak Village, Pujut District, Central Lombok Regency, West Nusa Tenggara was conducted to determine the diversity of bat species (species richness, diversity, and evenness). Sampling of bats was carried out in three places, namely in cave, hill and forest. The specimens were collected use trapping method by mist net. The results showed that 112 individuals of bats caught include to 5 species of suborder Megachiroptera and 1 species of suborder Microchinoptera. The suborder Megachiroptera consists of 5 species (Cynopterus nusatenggara, Eonycteris speleae, Rousettus amplexicaudatus, Macroglossus minimus and Cynopterus horsfieldii Gray). The suborder Microchiroptera consists of 1 species (Hipposideros diadema). The analysis data resulted the highest Margalef Index in hill habitat with 1.125 score and the lowest in the forest habitat with 0.780 score. Based on Shannon Index, the highest index measured in the cave habitat 1,481 score and the lowest score found forest habitat with 1,012. Furthermore, the Evenness Index analysis obtained the highest index value in the forest habitat with a value of 0.917 and the lowest in the hill habitat of 0.733. While the highest Simpson Index value is in the cave habitat of 0.744 and the lowest is in the forest habitat of 0.615. The results of community similarity index using the Jaccard Index stated that there were two types of habitats that showed complete similarity because they obtained a Jaccard Index value of 1, namely cave and hill habitats. Meanwhile, the species similarity index value based on the comparison of habitat types shows that, there are 4 groups of species that make up the full species similarity with a score of 1 of them; group 1 (C.nusanggara and C.horsfieldii), group 2 (E.speleae and R.amplexicaudatus), group 3 (E. speleae and M. minimus) and group 4 (R. amplexicaudatus and M. minimus).