Protected areas 9 Biodiversity 5 Climatic changes 5 Conservation 4 Environmental management 4 Economics 3 Law of the sea 3 National parks 3 Nature conservation 3 Tourism 3 Wildlife conservation 3 Climatology 2 Conservation areas 2 Ecology 2 Ecology-- Biodiversity-- Conservation 2 Ecosystem management 2 Ecotourism 2 Environmental impact analysis 2 Human welfare 2 LAW / International 2 Land Resources 2 Law and legislation 2 Leisure, Recreation and Tourism Economics, (New March 2000) 2 Marine animals 2 Marine ecosystem health 2 Marine mammals 2 Marine resources conservation 2 National parks and reserves 2 National parks and reserves-Government policy-History 2 Natural Resource Economics, (New March 2000) 2