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Bull trout are the management indicator species for the SNRA and population monitoring efforts are undertaken every year.
Bull trout are the management indicator species for Sawtooth National Forest, and they can be found in some of the streams in the wilderness.
Chusquea bamboo is an indicator species of the ecoregion.
O.E. (1927) and Robinson, T.W. (1958) on vascular plants in the arid western U.S., set up certain general types of indicator species, according to level of minimum depth of the water table at which water was at the maximum suction RO.