Gavekhoni lake, and marshes of the lower Zaindeh Rud

IBA Criteria

Year of most recent IBA criteria assessment: 1994

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Greylag Goose Anser anser LC winter 1987-1992 1,740 individuals B1i
Common Shelduck Tadorna tadorna LC winter 1977-1992 1,090-11,300 individuals A4i, B1i
Ruddy Shelduck Tadorna ferruginea LC winter 1977-1992 530-3,280 individuals A4i, B1i
Northern Shoveler Spatula clypeata LC winter 1987-1992 8,370 individuals A4i, B1i
Gadwall Mareca strepera LC winter 1987-1992 6,600 individuals A4i, B1i
Eurasian Wigeon Mareca penelope LC winter 1987-1992 4,560 individuals A4i, B1i
Mallard Anas platyrhynchos LC winter 1977-1992 5,100-7,960 individuals B1i
Northern Pintail Anas acuta LC winter 1977-1992 110-13,250 individuals A4i, B1i
Common Teal Anas crecca LC winter 1977-1992 7,600-41,500 individuals A4i, B1i
Pied Avocet Recurvirostra avosetta LC winter 1987-1992 146 individuals B1i
Black-winged Stilt Himantopus himantopus LC winter 1987-1992 286 individuals B1i
Common Redshank Tringa totanus LC winter 1977-1992 35-1,214 individuals B1i
A4iii Species group - waterbirds n/a winter 1977-1992 50,000-99,999 individuals A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
1994 high not assessed not assessed
Was the whole site covered? Yes State assessed by unset
Accuracy of information good

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Pollution domestic & urban waste water - type unknown/unrecorded happening now majority/most of area/population (50-90%) moderate to rapid deterioration high

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Gavkhouni Lake & marshes of the lower Zaindeh Rud Ramsar Site, Wetland of International Importance 43,000 protected area overlaps with site 43,000


IUCN Habitat Habitat detail Extent (% of site)
Artificial/Terrestrial -
Wetlands (inland) -
Shrubland -
Artificial/Aquatic & Marine -
Desert -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
rangeland/pastureland -
nature conservation and research -
hunting -
other -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Gavekhoni lake, and marshes of the lower Zaindeh Rud. Downloaded from on 27/03/2023.