1. Department of Agricultural Socio-economics, Faculty of Agriculture , Universitas Gadjah Mada , Yogyakarta , Indonesia
2. Centre for Economic and Public Policy Studies , Universitas Gadjah Mada , Yogyakarta , Indonesia
3. Department of Environmental Geography, Faculty of Geography , Universitas Gadjah Mada , Yogyakarta , Indonesia
4. Department of Fisheries, Faculty of Agriculture , Universitas Gadjah Mada , Yogyakarta , Indonesia