%0 Conference Paper %B Internatiomal Symposium on Indonesian Biodiversity %D 2013 %T Biodiversity In Logged Forest Of Tesso Nilo, Riau Province, Sumatra %A Dewi M Prawiradilaga %A Purwaningsih Purwaningsih %A Siti Susiarti %A Irvan Sidik %A A Suyanto %A Woro A. Noerdjito %A A. Marakarmah %A M H Sinaga %A E. Cholik %A A Saim %A Ike Rachmatika %K biodiversity %K logged forest %K richness %K Sumatran elephants %K Sumatran tiger %X Tesso Nilo is located at Riau province which is the largest area in Sumatera island. Previously, it has good lowland forest, however the forest has been threatened by logging and land conversion. Tesso Nilo area covers 188,000 ha and includes four districts: Inderagiri Hulu, Kuantan Sengingi, Pelalawan and Kampar. In order to provide scientific justification for conserving Tesso Nilo area, the field survey was conducted in June 2003 to assess the diversity of flora, medicinal plants, birds, mammals, reptiles, amphibians, fishes, insects and small mammal parasites. The survey was conducted in logged forests around Segati river, Toro river, Mamahan river, tributary Mamahan river and Sawan river. Although the area has been disturbed, the remaining forest contains very rich plant species. The high richness of plant species was shown by the high value of Mennhenick index. Records from the 1 ha studied plot identified a total of 360 species included in 165 genera and 57 families with 215 tree species and 305 sapling species. The local community has utilized 83 species of medicinal plants and 4 species of toxic plants for fishing. However, the most important medicinal plants which have economical value were ‘pagago’ Centella asiatica and ‘patalo bumi’ Eurycoma longifolia. The diversity of bird species reached 114 species represented 29% of the total Sumatran bird species (397 species). The most important species was the Sumatran Hill mynah (Gracula religiosa) which is almost extinct and the Wrinkled Hornbill (Aceros corrugatus). The other vulnerable bird species were Crestless Fireback (Lophura erythrophthalma), Crestless Fireback (Lophura ignita), and Hook-billed Bulbul (Setornis criniger). A total of 34 species or 16.5% of 206 species of Sumatran mammals was recorded in the area. The important mammal species included Sumatran tiger (Panthera tigris sumatrae), Sumatran elephants (Elephas maximus sumatrensis), the Sun bear (Helarctos malayanus) and three species of primates. The diversity of herpetofauna recorded 15 reptile species and 18 species of amphibians. The most important herpetofauna was the critically endangered False Gharial (Tomistoma schlegelii). The diversity index (Simpson index) of fish species was high (0.833) with the number of species: 50 represented 18% of the total Sumatran fish species (272 species). The important fish species were Breinsteinea sp. and Chaca bankanensis which were unique and rare. Since insects are the largest group of animal, this survey focused only on beetles. The identified beetles were classified into 644 species and 34 families. The Longhorn beetles (Cerambycidae) and the Scarab beetles (Scarabaeidae) indicated the highest species diversity. The diversity of small mammal parasites was high. The ectoparasites were categorized into 14 species and the endoparasites were categorized into 2 orders (Cestodes and Acantocephala) and 3 species %B Internatiomal Symposium on Indonesian Biodiversity %I Faculty of Biology, Jenderal Soedirman University %C Purwokerto, Central Java, Indonesia %G eng