Оңтүстік-Шығыс Азияның биогеографиялық аймағы – Малезия

Biogeographical region in Southeast Asia

Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. The original definition by the World Geographical Scheme for Recording Plant Distributions included Papuasia, but this was split off in its 2001 version.

Malesia was first identified as a floristic region that included the Malay Peninsula, the Malay Archipelago, New Guinea, and the Bismarck Archipelago, based on a shared tropical flora derived mostly from Asia but also with numerous elements of the Antarctic flora, including many species in the southern conifer families Podocarpaceae and Araucariaceae. The floristic region overlaps four distinct mammalian faunal regions. The first edition of the World Geographical Scheme for Recording Plant Distributions (WGSRPD) used this definition, but in the second edition of 2001, New Guinea and the Bismarck Archipelago were removed from Malesia and were united with the Solomon Islands, previously placed in the WGSRPD's Southwestern Pacific region, being placed into a new region, Papuasia.

The western part of Malesia, which includes the Malay Peninsula and the islands of Sumatra, Java, Bali, and Borneo, shares the large mammal fauna of Asia and is known as Sundaland. These islands are on Asia's relatively shallow continental shelf, and were linked to Asia during the ice ages, when sea levels were lower. The eastern edge of Sundaland is the Wallace line, named after Alfred Russel Wallace, the nineteenth century British naturalist who noted the difference in fauna between islands on either side of the line. Dipterocarps are predominant trees in the lowland forests of Sundaland.

Most of the Philippines were never connected to the Asian mainland, and have a largely Asian derived flora, and a distinct mammalian fauna. The Philippines have approximately 50 species of Dipterocarps in 11 genera.