|Central coordinates||105o 50.00' East 14o 4.00' North|
|IBA criteria||A1, A2, A4i|
|Altitude||30 - 50m|
|Year of IBA assessment||2003|
Site description The IBA is located along the Mekong River, in southern Lao P.D.R. The IBA covers the widest stretch of the Mekong River in Lao P.D.R., from Don Khong island to the international border with Cambodia. This stretch is extensively braided, with thousands of islands, and several sets of waterfalls and rapids. The banks of the river and the main islands are mainly steep, well vegetated, and lined with cultivation and scrub. Smaller islands generally support more natural vegetation, including scrub, grassland and seasonally flooded woodland, and some islands have extensive sand beaches or bars (Evans et al. 2000). Stretches of rapids support channel mosaic habitat, with rocks and bushes. To the south, the IBA is contiguous with Mekong River from Kratie to Laos IBA (KH010) in Cambodia, which supports similar riverine habitats. A number of key bird species have been recorded at the IBA, including Oriental Darter Anhinga melanogaster, and the recently described endemic Mekong Wagtail Motacilla samveasnae. The IBA supports a suite of riverine birds, including, probably, at least 1% of the world population of Small Pratincole Glareola lactea. In addition, there are records of White-rumped Vulture Gyps bengalensis, Long-billed Vulture G. tenuirostris and Red-headed Vulture Sarcogyps calvus from the IBA (Thewlis et al. 1998). While it is very unlikely that the IBA, by itself, could support populations of these species in the long-term, it forms part of a network of sites in southern Lao P.D.R. and northern Cambodia that may be able to. Finally, the IBA is one of only two places in Lao P.D.R. where Irrawaddy Dolphin Orcaella brevirostris still occurs (Duckworth et al. 1999), although the population is believed to be down to less than 10 individuals (I. G. Baird in litt. 2002).
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|White-rumped Pygmy-falcon Polihierax insignis||resident||2002||unknown||-||A3||Near Threatened|
|White-rumped Vulture Gyps bengalensis||resident||2002||unknown||-||A1, A3||Critically Endangered|
|Slender-billed Vulture Gyps tenuirostris||resident||2002||unknown||-||A1, A3||Critically Endangered|
|Red-headed Vulture Sarcogyps calvus||resident||2002||unknown||-||A3||Critically Endangered|
|Little Pratincole Glareola lactea||resident||2002||common||-||A4i||Least Concern|
|Blue-winged Pitta Pitta moluccensis||breeding||2002||unknown||-||A3||Least Concern|
|Sooty-headed Bulbul Pycnonotus aurigaster||resident||2002||unknown||-||A3||Least Concern|
|Stripe-throated Bulbul Pycnonotus finlaysoni||resident||2002||unknown||-||A3||Least Concern|
|Streak-eared Bulbul Pycnonotus blanfordi||resident||2002||unknown||-||A3||Least Concern|
|Grey-faced Tit-babbler Macronous kelleyi||resident||2002||unknown||-||A2||Least Concern|
|White-shouldered Starling Sturnus sinensis||passage||2002||unknown||-||A3||Least Concern|
|Black-collared Starling Sturnus nigricollis||resident||2002||unknown||-||A3||Least Concern|
|Vinous-breasted Starling Sturnus burmannicus||resident||2002||unknown||-||A3||Least Concern|
|Hainan Blue-flycatcher Cyornis hainanus||resident||2002||unknown||-||A3||Least Concern|
|Mekong Wagtail Motacilla samveasnae||resident||2002||unknown||-||A2||Near Threatened|
|Green-eared Barbet Psilopogon faiostrictus||resident||2002||unknown||-||A3||Least Concern|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Wetlands (inland)||Rivers and streams; Sand dunes and beaches||-|
|Artificial - terrestrial||Arable land||-|
|Forest||Lowland evergreen rain forest (tropical)||-|
|Land-use||Extent (% of site)|
Other biodiversity In the late 1990s there was still a small population of otter sp. in the Khone Falls area. A number of IUCN listed fish species are found in the area, including Probarbus jullieni, Probarbus labeomajor, Pangasianodon gigas, Pangasius sanitwongsei and Tenulosa thibeaudaui. Less than 10 Irrawaddy Dolphins Orcaella brevirostris are found along the border with Cambodia, below the Khone Falls (I. G. Baird in litt. 2002).A very small population of Long-tailed Macaque Macaca fascicularis was found on one island just above the Khone Falls in the late 1990s (I. G. Baird pers. comm.).Two species of soft-shelled turtles are found in the area (I. G. Baird pers. comm.).
References Document nameEvans, T. D., Towll, H. C., Timmins, R. J., Thewlis, R. M., Stones, A. J., Robichaud, W. G. and Barzen, J. (2000) Ornithological records from the lowlands of southern Laos during December 1995-September 1996, including areas on the Thai and Cambodian borders. Forktail 16: 29-52.Duckworth, J. W., Alström, P., Davidson, P., Evans, T. D, Poole, C. M., Setha, T. and Timmins, R. J. (2001) A new species of wagtail from the lower Mekong basin. Bull. Brit. Orn. Club 121(3): 152-182.Thewlis, R. M., Timmins, R. J., Evans, T. D. and Duckworth, J. W. (1998) The conservation status of birds in Laos: a review of key species. Bird Conserv. Internat. 8(suppl.): 1-159.Baird, I. G. (in press) Aquatic biodiversity in the Siphandone wetlands.Duckworth, J. W., Salter, R. E. and Khounboline, K. eds. (1999) Wildlife in Lao P.D.R.: 1999 status report. Vientiane: IUCN, WCS and CPAWM.
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