1. Department of Agricultural Socio-economics, Universitas Brawijaya, Malang, Indonesia
2. Faculty of Forestry, Universitas Gadjah Mada, Yogyakarta, Indonesia
3. Department Biology, Faculty of Tarbiyah and Teaching Science, Universitas Islam Negeri Mataram, Mataram, Indonesia
4. Department of Human Geography, Georg-August-University, Göttingen, Germany