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Location Iran, Islamic Republic of, North Khorasan
Central coordinates 57o 20.00' East  36o 45.00' North
IBA criteria A1, B2
Area 250,000 ha
Altitude 1,000 - 1,300m
Year of IBA assessment 1994

Site description A vast area of cultivated upland plains and gently undulating hills, c.90 km from east to west and 30 km north to south, including the broad valleys of the Rud-i Jowin and Rud-i Kalshur rivers. The rivers flood in winter and spring and are reduced to a series of stagnant brackish pools by late summer. There are some seasonally flooded brackish marshes. Other habitats include cultivated land (mainly cereals), salt-tolerant vegetation in depressions on the valley floors, and Artemisia steppe on the rolling hills. There is some livestock grazing.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Bustard Otis tarda winter  1977  13-70 individuals  good  A1, B2  Vulnerable 


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial   major
Grassland   minor
Wetlands (inland)   minor

Land use

Land-use Extent (% of site)
rangeland/pastureland minor
agriculture major

Other biodiversity None known to BirdLife International.

Acknowledgements Data-sheet compiled by Dr D. A. Scott, reviewed by Dept of Environment.

References Adhami (1972b), Eftekhar (1973b), Kharom (1976).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Rud-i Jowin and Rud-i Kalshur. Downloaded from on 01/11/2014

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