Contents -- Contributors -- Foreword -- Preface -- Introduction -- 1 Impacts Positive and Negative: Links Between Ecotourism and Environment -- 2 The Cost of Getting There: Impacts of Travel to Ecotourism Destinations -- 3 Impacts of Tourism-related In-migration: the Greater Yellowstone Region -- 4 Impacts of Hiking and Camping on Soils and Vegetation: a Review -- 5 Environmental Impacts Associated with Recreational Horse-riding -- 6 Environmental Impacts of Motorized Off-highway Vehicles -- 7 Impacts of Tourboats in Marine Environments -- 8 Impacts of Recreational Power-boating on Freshwater Ecosystems -- 9 Ecological Impacts of Tourism in Terrestrial Polar Ecosystems -- 10 Ecological Impacts and Management of Tourist Engagements with Cetaceans -- 11 Impacts of Ecotourism on Birds -- 12 Impacts of Ecotourism on Terrestrial Wildlife -- 13 Environmentally Sustainable Trail Management -- 14 Managing Impacts of Camping -- 15 Visitor Perceptions of Recreation-related Resource Impacts -- 16 Managing Impacts of Ecotourism Through Use Rationing and Allocation -- 17 Using Ecological Impact Measurements to Design Visitor Management -- 18 Reducing Impacts Through Interpretation, Lamington National Park -- 19 Campsite Impacts in Prince William Sound, Alaska, USA -- 20 The Role of Tourism in Spreading Dieback Disease in Australian Vegetation -- 21 Instream Bacteria as a Low-threshold Management Indicator of Tourist Impacts in Conservation Reserves -- 22 Four-wheel Drive Vehicle Impacts in the Central Coast Region of Western Australia -- 23 Ecological Impacts of Ecotourist Visitation on Macroalgal Beds in Pacific Rim National Park Reserve -- 24 Understanding Use and Users at Itatiaia National Park, Brazil -- 25 Impacts and Management of Hikers in Kavkazsky State Biosphere Reserve, Russia -- Conclusions -- Index.