Brunei

Brunei lies on on the northern coast of Borneo, an island in the South China Sea that is politically divided by Brunei, Malaysia, and Indonesia. Its coastal plain rises to mountains in the east and lowlands in the west. Most of the country is used for human activities, in its majority by urban use. Brunei has high biodiversity rarity of terrestrial land vertebrates at a global scale. When analysed as single taxons, the rarity of amphibians, birds, mammals and reptiles is also high. The rarity of marine fish and mammals is also high. Brunei’s primary environmental challenge is air pollution, intensified by seasonal forest fires in neighboring Indonesia.