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The site was identified as internationally important for bird conservation in 1994 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

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

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 1994. The most recent assessment (1994) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Habitat	% of IBA	Habitat detail
Wetlands (inland)	21
Artificial/Aquatic & Marine	major (>10)
Artificial/Terrestrial	major (>10)
Desert	minor (<10)
Shrubland	minor (<10)

Land use	% of IBA
nature conservation and research	68
agriculture	major (>10)
rangeland/pastureland	minor (<10)
hunting	minor (<10)
other	minor (<10)

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Gavekhoni lake, and marshes of the lower Zaindeh Rud (Iran, Islamic Republic of). Downloaded from https://datazone.birdlife.org/site/factsheet/gavekhoni-lake-and-marshes-of-the-lower-zaindeh-rud-iba-iran-islamic-republic-of on 23/12/2024.