Biome: Tropical and Subtropical Moist Broadleaf Forests... Size: 37,600 square miles... Conservation Status: Relatively Stable/Intact..... Introduction: "The Tenasserim-South Thailand Semi-Evergreen Rain Forests [IM0163] cover the transition zone from continental dry evergreen forests common in the north to semi-evergreen rain forests to the south. As a consequence, this ecoregion contains some of the highest diversity of both bird and mammal species found in the Indo-Pacific region. The relatively intact hill and montane forests form some of the best remaining habitat essential to the survival of Asian elephants and tigers in the Indo-Pacific region. However, the lowland forests are heavily degraded, and many lowland specialists such as the endemic Gurney?s pitta survive in a few isolated reserves... Description: Location and General Description This ecoregion encompasses the mountainous, semi-evergreen rain forests of the southern portion of the Tenasserim Range, which separates Thailand and Myanmar, and the numerous small ranges of peninsular Thailand. This ecoregion also includes the extensive lowland plains that lie between the peninsular mountains and until recent decades supported extensive lowland forest. The southern margin of this ecoregion is defined by the Kangar-Pattani floristic boundary (Whitmore 1984), which separates Indochina from the Malesia. Annual precipitation increases southward as the length of the dry season and the magnitude of premonsoon drought stress declines. The southern mountain ranges receive rain from both the northeast and southwest monsoons so that, unlike in mountain ranges further north, there is no significant rainshadow. The Köppen climate system places this ecoregion in the tropical wet climate zone (National Geographic Society 1999)..."