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Location Thailand, Satun,Trang
Central coordinates 99o 41.00' East  7o 10.00' North
IBA criteria A4iii
Area 31,200 ha
Altitude 0 - 2m
Year of IBA assessment 2004

Bird Conservation Society of Thailand



Site description The IBA comprises a relatively uninhabited stretch of the west coastline of peninsular Thailand, from the Palian estuary to the Phak Bara estuary. Along this stretch of coastline, six large rivers discharge into the Andaman Sea. Habitats at the site comprise mangroves, mudflats and a small area of sandy beach. Mangrove species include Bruguiera cylindrica, Rhizophora spp., Avicennia alba, Xylocarpus granatum and X. moluccensis.

Key Biodiversity Palian Lang-ngu is an important site for migratory waterbirds, and is thought to regularly support over 20,000 congregatory waterbirds. At least 90 bird species have been recorded at the site to date, many of which utilise the invertebrate-rich mudflats and mangroves as feeding areas. The only globally threatened species to be recorded at the site is Lesser Adjutant Leptoptilos javanicus, although it is not thought to regularly occur in significant numbers.

Non-bird biodiversity: No information is available about other globally threatened species at the site

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
A4iii Species group - waterbirds unknown  20,000 individuals  unknown  A4iii   

IBA Monitoring

2013 high not assessed not assessed
unset
Unknown

Agricultural expansion and intensification marine and freshwater aquaculture - industrial aquaculture happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications other ecosystem modifications happening now majority/most of area/population (50-90%) slow but significant deterioration high
Over-exploitation, persecution and control of species logging & wood harvesting - unintentional effects: subsistence/small scale happening now majority/most of area/population (50-90%) slow but significant deterioration high
Residential and commercial development commercial and industrial development likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high
Transportation and service corridors roads and railroads likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high

Habitats

IUCN habitat Habitat detail Extent (% of site)
Coastline   -

References Bird Conservation Society of Thailand (2000) Report of birds found in Palian Lang-Ngu. Unpublished report. BirdLife International (1998) Proceedings of the Thailand IBA workshop, Bangkok, November 1998. Unpublished report. Office of Environmental Policy and Planning (1999) Directory of internationally important wetlands in Thailand. Bangkok: Ministry of Science, Technology and Environment. (In Thai.)

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Palian Lang-ngu. Downloaded from http://www.birdlife.org on 19/12/2014

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