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Location Thailand, Lampang,Phrae
Central coordinates 100o 14.00' East  18o 43.00' North
IBA criteria A1
Area 45,475 ha
Altitude 200 - 1,396m
Year of IBA assessment 2004

Bird Conservation Society of Thailand

Site description The IBA comprises Mae Yom National Park, which is contiguous with Doi Phu Nang proposed national park (IBA TH015) to the north. The site includes a substantial portion of the Mae Yom river valley. The dominant vegetation type at the site is mixed deciduous forest, while hill evergreen forest is found in the foothills, and deciduous dipterocarp forest occurs in the low-lying plains. One of the most notable features of the site is a 4,800 ha tract of natural Teak Tectona grandis forest; by far the largest (and also considered the richest) natural Teak forest remaining in Thailand. At least part of the site was formerly under a logging concession.

Key Biodiversity Mae Yom National Park is an important site for the conservation of the globally threatened Green Peafowl Pavo muticus. This species was formerly widespread along the Mae Yom river but disappeared due to hunting, logging and encroachment. Its rediscovery at the site, in March 1996, led to a wide-ranging survey for the species and other pheasants in northern Thailand, which located a population of over 200 individuals, shared between Mae Yom National Park and two other IBAs: Wiang Lor Wildlife Sanctuary and adjacent area to the east (TH014) and Doi Phu Nang (TH015). In addition, there is a record of the globally threatened Silver Oriole Oriolus mellianus from the site, and the globally near-threatened White-rumped Falcon Polihierax insignis also occurs.

Non-bird biodiversity: Mammals Gaur Bos frontalis (VU) Asian Gold(EN) Cat Catopuma temminckii (VU) Dhole Cuon alpinus (VU) Northern Pig-tailed Macaque Macaca leonina (VU) Asian Black Bear Ursus thibetanus (VU) Reptiles Big-headed Turtle Platysternon megacephalum (EN) Plants Afzelia xylocarpa (EN) Anisoptera costata (EN)

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Green Peafowl Pavo muticus resident  2004  present  A1  Endangered 

IBA Monitoring

2013 high not assessed medium

Biological resource use logging & wood harvesting - unintentional effects: subsistence/small scale happening now small area/few individuals (<10%) slow but significant deterioration low
Energy production and mining renewable energy likely in short term (within 4 years) some of area/population (10-49%) very rapid to severe deterioration high
Human intrusions and disturbance work and other activities happening now small area/few individuals (<10%) slow but significant deterioration low

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Some limited conservation initiatives are in place  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Mae Yom National Park 49,702 protected area contains site 45,475  


IUCN habitat Habitat detail Extent (% of site)
Forest   -
Wetlands (inland)   -

References BirdLife International (2001) Threatened birds of Asia: the BirdLife International Red Data Book. Cambridge, UK: BirdLife International. Center for Conservation Biology (1995) Kang Sua Ten Water Development Project survey of Nntural teak forests in Thailand. Report to the World Bank by the Faculty of Science, Mahidol University, and the Forest Resources Inventory Group. Manopravit, P. (1996) Green Peafowl discovery on the Yom river. Bangkok: Seub Nakhasathein Foundation. National Park Division (2001) National parks in Thailand. Bangkok: Office of Natural Resource Conservation, Royal Forestry Department. Seub Nakhasathein Foundation, Bird Conservation Society of Thailand, the Association for the Conservation of Wildlife and Wildlife Fund Thailand (1996) Biodiversity survey of Mae Yom National Park. Unpublished report.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Mae Yom. Downloaded from on 23/10/2016

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