The roles of traditional knowledge systems in orang-utan Pongo spp. and forest conservation: a case study of Danau Sentarum, West Kalimantan, Indonesia Publication Year: 2016 The orang-utan Pongo spp. is protected by national and international legislation, yet populations continue to decline. Many reports implicate local... Authors: Yuliani, L.; Adnan, H.; Achdiawan, R.; Bakara, D.; Heri, V.; Sammy, J.; Salim, M.A.; Sunderland, T.C.H.