Related by context. Frequent words. (Click for all words.) 82 trans boundary 62 biodiversity conservation 56 biodiversity 55 bio diversity 54 Ramsar Convention 53 riparian 52 irrigated agriculture 52 Ramsar 50 river basin 50 Nile Basin 50 hydrological 50 transborder 50 ecological 50 river basins 49 desertification 49 watersheds 49 conservation 49 Protected Areas 48 environmental degradation 48 UNEP 48 Biosphere Reserve 48 irregular migration 48 ecology 47 Biodiversity 47 intergovernmental 47 Desertification 46 Great Lakes basin 46 Basel Convention 46 transnational crime 46 trilateral cooperation 46 Indus Waters Treaty 46 aquatic ecosystems 46 vector borne diseases 46 climate change 45 Watersheds 45 multi stakeholder 45 poverty eradication 45 inter governmental 45 illicit trafficking 45 interregional 44 afforestation 44 rivers lakes 44 Protected Area 44 treaties 44 environmental 44 littoral states 44 REDD + 44 arid regions 44 Catchment 43 UNESCAP 43 hydrology 43 intergovernmental agreements 43 wildlife 43 UN HABITAT 43 Great Lakes Compact 43 invasive species 43 ecosystems 43 hydrologic 43 overexploitation 43 Indigenous peoples 43 watershed 43 wildlife conservation 43 eutrophication 43 Sustainable Development 43 IUCN 42 habitat degradation 42 migratory species 42 deforestation 42 transnational 42 Urbanization 42 indigenous peoples 42 soil erosion 42 marine biodiversity 42 semi arid 42 groundwater recharge 42 waterways 42 forest ecosystems 42 multi sectoral 42 Aral Sea 42 boreal 42 Indigenous Peoples 42 freshwater 42 fauna 42 groundwater 42 rivers 42 wetland restoration 42 Biological Diversity CBD 42 ESCAP 42 catchments 42 poverty alleviation 42 aquatic invasive species 42 Ecological 41 watercourses 41 waterbirds 41 Important Bird 41 Environment Programme UNEP 41 hydropower 41 karst 41 carbon sequestration 41 CARIFORUM 41 fisheries