Barat Daya Islands - Geography

Geography

These islands are located off the eastern end of East Timor. Wetar is the largest island in the group. To the west, the Ombai Strait separates Wetar from Alor Island, the easternmost of the Lesser Sunda Islands (Nusa Tenggara). The Wetar Strait separates Wetar from Timor to the south.

Even though included in the Indonesian Maluku province political division, the southwestern islands are geographically part of the Lesser Sunda Islands. Rainfall is limited with a dry season between October and December when some of the islands appear as dry savannah. The Barat Daya Islands, together with Timor, the Leti Islands, and Alor, are designated as the Timor and Wetar deciduous forests ecoregion. Most of the islands are barren, infertile and minimally forested.

Together with Timor, Nusa Tenggara, Sulawesi, and most of Maluku, the Barat Daya Islands are part of Wallacea, the group of Indonesian islands that are separated by deep water from both the Australian and Asian continental shelves. The islands of Wallacea have never been linked by land to either Asia or Australia, and as a result have few mammals and a mix of flora and fauna from both continents.