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Study area and sample sites. (A) Qinghai Lake is the largest lake in China and is located on the northeast edge of the Qinghai–Tibet Plateau. (B) Buha river is the largest tributary of Qinghai Lake, which is an endorheic saline lake. (C) Water and benthic biofilm samples were collected at 22 sites. The map was cited from Ren (2019).
