|Location||Iran, Islamic Republic of, Hormozgan|
|Central coordinates||53o 24.00' East 26o 48.00' North|
|IBA criteria||A1, A4i, A4iii, B1i, B2, B3|
|Altitude||0 - 6m|
|Year of IBA assessment||1994|
Site description A small island c.2 km due east of the eastern tip of Lavan island and c.9 km off the mainland coast in the central Persian Gulf. The island is relatively flat (maximum elevation c.6 m), composed of a coral conglomerate covered by dunes and sandy soils. There are no springs or surface water. Rainfall is very low, and the summer temperatures frequently exceed 40°C. Along the southern, western and north-west shores the rock is exposed as cliffs up to c.2 m high. In the south-east corner the rocks form a jumbled heap of boulders just above high water. The remainder of the shoreline is a narrow sand beach which widens at the north-east corner to form a sandy promontory. There are two main areas of sparsely vegetated dunes, stretching across the north and south of the island. The flat area across the centre of the island is densely clad with arid steppic vegetation dominated by Atriplex, in places forming an impenetrable shrub layer up to 60 cm high. Land ownership is public. The island is uninhabited, although a ruined building indicates former occupation.
Key Biodiversity See box for key species. The island supports the largest known colony of terns in Iran, believed to contain c.300,000 pairs of Sterna repressa and 3,000-5,000 pairs of S. anaethetus in 1972, along with much smaller numbers of S. bergii and S. bengalensis. However, by 1976 and 1977, S. repressa had declined dramatically to only 25,000-50,000 pairs, almost certainly due to massive egg-collecting by the Lavan islanders. There is a colony of Egretta gularis (8-12 pairs) as well as 3-4 pairs of Butorides striatus.
Non-bird biodiversity: Reptiles: the island is a very important nesting site for sea-turtles, mainly Chelonia mydas (E), with smaller numbers of Eretmochelys imbricata (E) and possibly one other species. A small poisonous snake (Viperidae) is abundant and has given the island its alternative name of Maru (Snake) Island.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Socotra Cormorant Phalacrocorax nigrogularis||breeding||1972-1977||50-100 breeding pairs||good||A1, B2||Vulnerable|
|White-cheeked Tern Sterna repressa||breeding||1972-1977||25,000-300,000 breeding pairs||good||A4i, B1i, B3||Least Concern|
|Bridled Tern Onychoprion anaethetus||breeding||1972-1977||3,000-5,000 breeding pairs||good||A4i, B1i||Least Concern|
|A4iii Species group - waterbirds||breeding||1972-1977||28,000-305,000 breeding pairs||good||A4iii|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Sheedvar Island||Wetlands of International Importance (Ramsar)||870||protected area contained by site||98|
|Shidvar||Wildlife Refuge||98||protected area contained by site||98|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Land-use||Extent (% of site)|
|nature conservation and research||100%|
|Notes: Exploitation of seabirds: egg-collecting for human consumption was a major acrtivity in the 1970s.|
Acknowledgements Data-sheet compiled by Dr D. A. Scott, reviewed by Dept of Environment.
References Argyle (1976a), Cornwallis (1977), Gallagher et al. (1984), Scott (1972b, 1975b).
Contribute Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.
Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Sheedvar island. Downloaded from http://www.birdlife.org on 25/10/2016
To provide new information to update this factsheet or to correct any errors, please email BirdLife