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Location India, Arunachal Pradesh
Central coordinates 92o 5.00' East  27o 26.77' North
IBA criteria A1, A2
Area 500 ha
Altitude 1,000 - 3,000m
Year of IBA assessment 2004

Bombay Natural History Society



Site description Sangti Valley is a poorly known, remote and inaccessible area in Arunachal Pradesh. This region is one of the global biodiversity hotspots (Myers 1988, 1991). It is recognized as an Eastern Himalayas Endemic Bird Area (Stattersfield et al. 1998). Sangti Valley is neither protected nor does it come under reserve forests, hence it does not have well a defined boundary. The area is mountainous country, which is part of the Eastern Himalaya. The lowest parts are c. 1,000 m (near Kalaktang), while the highest parts are above 3,000 m in Mandla Phudung area. The area lies in the Middle Himalaya. Shergaon (another IBA) is c. 2,000 m, while Sangti Valley is c. 1,500 m above msl. Sangti Valley is surrounded by denuded slopes of the Great Himalaya, with sparse Temperate and Broadleaf forests. The western side of the Valley has villages and most parts of the Valley are under paddy cultivation in summer. In the winter, the harvested paddyfields attract many birds. There is a small, half-hectare patch of marsh, where the Black-necked Crane Grus nigricollis is seen. The climate is typically montane, the main features of which are sharp contrasts between sun and shade temperatures, wide diurnal temperature range, inversion of temperature and variability of rainfall depending upon exposure and elevation. Summer is warm and wet, while winter is cold and dry, with occasional rain. Annual rainfall varies from <1,500 mm (northern slopes, partly rainshadow zone) to >2,000 mm (southern slopes). The south-facing slopes receive heavy rainfall. The temperature generally ranges from 0 ?C in winter (minimum) to 30 ?C in summer (maximum). Heavy snowfall is experienced in winter in the higher areas (especially above 2,200 m, occasionally down to 1,800 m). Tropical Wet Evergreen Forest occurs only in the lower areas near Kalaktang. Subtropical Forest occurs widely having both broadleaf as well as conifers. While the broadleaf forest generally occurs up to 1,900 m elevation, the conifers are usually found up to 1,800 m, especially in areas receiving less amount of rainfall. Various species of oaks dominate the broadleaf type.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Blyth's Tragopan Tragopan blythii resident  2004  present  A1  Vulnerable 
Black-necked Crane Grus nigricollis winter  2004  present  A1  Vulnerable 

Habitats

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

Acknowledgements Key contributors: Anwaruddin Choudhury and Manju Menon.

References 

Ali, S. and Ripley, S. D. (1987) CompactHandbookoftheBirdsofIndia andPakistan. Oxford University Press, Bombay.

Athreya,R.andKartikeyan,S. (1995) The wildlife sanctuaries in DafflaHills of Arunachal Pradesh. Unpublished report.

Choudhury, A. U. (2000a) The Black-necked Crane in Arunachal Pradesh. The Twilight 2 (2 & 3): 31-32.

Choudhury, A. U. (2000b)ThebirdsofEaglenest, and Sessa Orchid Sanctuaries, Arunachal Pradesh. Report to Oriental Bird Club, UK.

Choudhury, A. U. (2001) Birds in Sangti-Shergaon-Kalaktang areas of West Kameng district, Arunachal Pradesh. Unpublished. Pp. 27.

Gole, P. (1996) A guide to the Cranes of India. Bombay Natural History Society, Bombay. Pp. 35.

Grimmett,R.,Inskipp, C.andInskipp,T.(1998).Birds oftheIndian Subcontinent. Christopher Helm (Publishers) Ltd., London.

Kumar, S. and Singh, P. (1999) Astudyon pheasant distribution in Arunachal Pradesh, Eastern Himalaya, India. Wildlife Institute of India, Dehra Dun. Pp. 52.

Myers, N. (1988) Threatened Biotas: “Hotspots” in tropical forests. Environmentalist 8(3):1-20.

Myers, N. (1991) The biodiversity challenge: Expanded “hotspots” analysis. Environmentalist10(4): 243-256.

Singh, P. (1995) Recent bird records from Arunachal Pradesh, India. Forktail 10: 65-104.

Singh, P. (1999) Bird survey of selected localities in Arunachal Pradesh, India. Oriental Bird Club Bulletin 30; 11-12.

Stattersfield, A. J., Crosby, M. J., Long, A. J. and Wege, D. C. (1998) Endemic Bird Areas of the World: Priorities for Biodiversity Conservation. BirdLife Conservation Series No. 7. BirdLife International, Cambridge, U.K.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Sangti Valley. Downloaded from http://www.birdlife.org on 23/10/2014

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