Phou Dendin (16632)
Laos, Asia
Site overview
KBA status: confirmed
Year of last assessment: 2012
National site name: Phou Dendin
Central coordinates: Latitude: 22.0500, Longitude: 102.2833
System: terrestrial
Elevation (m): 500 to 1900
Area of KBA (km2): 1729.64781
Protected area coverage (%): 97.97
KBA classification: Global/Regional TBD
Legacy site: Yes
Site details
Site description: The IBA comprises the upper Nam Ou and its catchment, within Phou Dendin National Protected Area in northern Lao P.D.R. The topography of the IBA is mountainous, with the highest elevations being in the north-east of the IBA, along the international border with Vietnam. Large parts of the IBA, particularly along the Nam Ou above the confluence with the Nam Khang, are uninhabited, and the slopes flanking the river support unbroken dry evergreen forest (Duckworth et al. 1998). The IBA has only been the focus of a few brief surveys, which were constrained by time limitations and inclement weather. As a result, insufficient ornithological information is available to characterise the bird communities of the IBA (Thewlis et al. 1998). However, the available data indicate that the Nam Ou and its tributaries are important for a number of riverine species, including Blyth's Kingfisher Alcedo hercules, Crested Kingfisher Megaceryle lugubris, Lesser Fish Eagle Ichthyophaga humilis and Brown Dipper Cinclus pallasii (Duckworth et al. 1998). Although small numbers of River Lapwing Vanellus duvaucelii have been recorded at the IBA (Thewlis et al. 1998), given the lack of suitable habitat, it is unlikely that the IBA is of high importance for the conservation of sandbar-nesting birds (Duckworth et al. 1998). The available data from forest habitats indicate that the IBA supports Great Hornbill Buceros bicornis, Brown Hornbill Anorrhinus tickelli and Rufous-necked Hornbill Aceros nipalensis (Duckworth et al. 1998). However, given the high hunting pressure believed to be operating and the relative isolation of the IBA from other significant areas of suitable habitat, it is not certain that the IBA can support populations, at least of the two larger species, that are viable in the long term.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance because it meets one or more previously established criteria and thresholds for identifying sites of biodiversity importance (including Important Bird and Biodiversity Areas, Alliance for Zero Extinction sites, and Key Biodiversity Areas) The site has been reviewed and re-confirmed as a KBA in the process of compiling the revised 2011 CEPF Ecosystem Profile for the Indo-Burma Hotspot.
Additional biodiversity: Survey coverage the IBA area was poor due to a shortage of time and inclement weather and so any future survey need not fear duplication of the present effort in any area. (Robichaud and Sounthala 1995) Non-bird biodiversity: The Hmong headman of Ban Than reported Lepopard P. pardus is common in the NBCA (possibly in IBA as well). (Robichaud and Sounthala 1995)Robichaud and Sounthala (1995) concluded that Rhesus Macaque Macaca mulatta was common in the area of Protected Area and saw three separated along Nam Ou, thus this species of Primate may occur in the IBA area. They also suggested that the habitat of IBA is suitable for gibbons.Robichaud and Sounthala (1995) found the tracks of Asian Elephant, probably three or few individuals along Nam Ou a few kilometers downstream of Nam Toho mouth and found the dropping nearby.
Habitats
Land use: agriculture | nature conservation and research
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Wetlands(Inland) | 50 | |
| Forest | 50 |
Threats
Summary of threats to biodiversity at KBA: Although there are no roads or large human settlements within the IBA, there are a number of small villages, whose inhabitants practice shifting cultivation (Duckworth et al. 1998). Shifting cultivation and associate fires have probably been responsible for the conversion of large areas of forest to grassland and other secondary habitats. In addition, hunting is probably a major threat to biodiversity at the IBA. However, there has been no assessment of human impacts on the IBA since the mid 1990s, since when the situation may have changed significantly.
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops | Small-holder farming | Ongoing |
| Agriculture & aquaculture | Annual & perennial non-timber crops | Agro-industry farming | Ongoing |
| Biological resource use | Hunting & collecting terrestrial animals | Intentional use (species being assessed is the target) | Ongoing |
Additional information
References: 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.Duckworth, J. W., Tizard, R. J., Timmins, R. J., Thewlis, R. M., Robichaud, W. B. and Evans, T. D. (1998) Bird records from Laos, October 1994-August 1995. Forktail 13: 33-68 (including errata sheet distributed with Forktail 14).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.