|Central coordinates||98o 51.00' East 7o 57.00' North|
|IBA criteria||A1, A3, A4i|
|Altitude||0 - 200m|
|Year of IBA assessment||2004|
Site description The IBA comprises the estuary of the Krabi river, immediately upstream and downstream of Krabi town, on the west coast of peninsular Thailand. Mangroves cover c.10,200 ha, and have mostly been degraded by logging. Intertidal sand- and mudflats cover a further c.1,200 ha at the river mouth. The site also includes a number of limestone karst outcrops. The site is included within Krabi Estuary Ramsar Site, which was designated in 2001and covers 21,299 ha.
Key Biodiversity Na Muang Krabi is an important site for migratory waterbirds. The globally threatened Nordmann's Greenshank Tringa guttifer and Chinese Egret Egretta eulophotes are regular winter visitors to the site, while another globally threatened species, Masked Finfoot Heliopais personata, is a regular non-breeding visitor. The site supports resident populations of two globally near-threatened species, Mangrove Pitta Pitta megarhyncha and Brown-winged Kingfisher Halcyon amauroptera, while a third globally near-threatened species, Asian Dowitcher Limnodromus semipalmatus, occurs regularly as a passage migrant. In addition, the site supports of 1% of the Asian biogeographic populations of Common Tern Sterna hirundo and Lesser Crested Tern S. bengalensis. The site qualifies under criterion A3 because it supports one species (Masked Finfoot) restricted to the Indochinese Tropical Moist Forests (Biome 09).
Non-bird biodiversity: No information is available about other globally threatened species at the site.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Chinese Egret Egretta eulophotes||non-breeding||2004||present||-||A1||Vulnerable|
|Masked Finfoot Heliopais personatus||non-breeding||2004||present||-||A1||Endangered|
|Spotted Greenshank Tringa guttifer||winter||2004||present||-||A1, A4i||Endangered|
|Lesser Crested Tern Thalasseus bengalensis||winter||2004||present||-||A4i||Least Concern|
|Common Tern Sterna hirundo||winter||2004||present||-||A4i||Least Concern|
|Human intrusions and disturbance||work and other activities||happening now||majority/most of area/population (50-90%)||slow but significant deterioration||high|
|Natural system modifications||other ecosystem modifications||happening now||some of area/population (10-49%)||slow but significant deterioration||medium|
|Pollution||industrial & military effluents - type unknown/unrecorded||happening now||majority/most of area/population (50-90%)||moderate to rapid 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||shipping lanes||likely in short term (within 4 years)||some of area/population (10-49%)||very rapid to severe deterioration||high|
|Whole area of site (>90%) covered by appropriate conservation designation||A management plan exists but it is out of date or not comprehensive||The conservation measures needed for the site are being comprehensively and effectively implemented||high|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Krabi Estuary||Wetlands of International Importance (Ramsar)||21,299||protected area contains site||11,400|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial - terrestrial||-|
References Bird Conservation Society of Thailand Bulletin 20(12) (December 2003). BirdLife International (1998) Proceedings of the Thailand IBA workshop, Bangkok, November 1998. Unpublished report. BirdLife International (2001) Threatened birds of Asia: the BirdLife International Red Data Book. Cambridge, UK: BirdLife International. Office of Environmental Policy and Planning (1999) Directory of internationally important wetlands in Thailand. Bangkok: Ministry of Science, Technology and Environment. (In Thai.) Ramsar Bureau website http//: www.ramsar.org
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Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Na Muang Krabi. Downloaded from http://www.birdlife.org on 31/08/2016
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