Fig. 1.

Portrayal of sites identified for ecohydrological measurements on the Qinghai-Tibetan Plateau. a “On Burrow.” Infiltrometer was placed centered in disturbed area outside the plateau pika burrow entrance; b “On Colony.” Infiltrometer was placed at least 1 m from an active pika burrow; c “Poisoned Site” showing the condition of pika-free grassland. Infiltrometer placement at each site was randomly determined (see text)