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Five different criteria were proposed to assess the conservation status as well as determination of their priority rankings of Iranian wetlands. These were:
Birds, fishes, threatening factors, socio-economic factors and wetland conservation status. Special attention was paid to endangered species, species diversity, endemism, exotic species, nesting and reproduction, pollutants and drainage.
As a result, the top thirteen wetlands in terms of ecological importance and their great demand for more conservation measures were:
Choghakhhor Hor-o-Al Azim
Mound River Gorgan Bay, Miankaleh, lapoo
Hamoun-e-saberi-Hirmand Shadegan
Khorekhoran Helleh estuary
Gandoman Anzali
Urumieh Argan of parieeshan
Hamoun-e-pouzak