Ecological assessment of Limau Manis’s torrent frogs, West Sumatra

An ecological assessment of sumatran torrent frogs was conducted from mid December 2011-mid January 2012 in Limau Manis rain forest. A Modification of the transect method was used to determine the preferred microhabitat of frog species along the Limau Manis strong water stream. A total of 15 species of frogs were recorded during 15 days censuses at the two transect lines (total transect length was 600 meters) along the stream, which consisted of five frog families, including Megophryidae, Microhylidae, Bufonidae, Dicroglossidae and Ranidae. Among 15 frog species, nine species were always present at the transect area, including Phrynoidis aspera, Limnonectes blythii, L. kuhlii, Huia sumatrana, Hylarana chalconota, Odorrana hosii, H. parvaccola, H. picturata and H. rufipes. Based on linear regression analyses, the number of individuals was significantly influenced by water temperature and tended to be influenced by air temperature. The number of species tended to be influenced by water temperature. The number of individuals of four species, H. rufipes, O. hosii, H. sumatrana and P. aspera that were present along the transect lines were significantly influenced by water temperature.