a1 Gatehouse Farm, Coldharbour Lane. Hildenborough, Tonbridge, Kent TN11 9LE, UK.
a2 Agriculture Extension and Cooperatives, Sukhothai Thammithirat Open University, Bangpood, Pakkred, Nonthaburi, Thailand.
a3 National Parks Division, Royal Forest Department, Phahon Yothin Road, Bangkhen, Bangkok 10900, Thailand.
Thailand has the best protected-area system in South East Asia, comprising 74 national parks and 34 wildlife sanctuaries. However, the integrity of these sites is far from assured: some are ‘paper parks’, which are being subjected to increasing human pressure. One site, Khao Sam Roi Yot National Park, has suffered some of the most extreme degradation.