Summary: Fig. 1: Location of Santa Rita
Experimental Range (SRER),
established in 1903, in southeastern
Arizona. This study was conducted
at 1,100 m elevation on sandy clay
loam soil surfaces of late Pleistocene
Trends in woody plant (Prosopis velutina) biomass, 1932 to 2006:
Effects of grazing and herbicide treatments
Dawn M. Browning and Steve R. Archer
School of Natural Resources, University of Arizona, Tucson, AZ 85721
Photo by C. Cribbs, 1937: McGinnies Plots on SRER.
1)The dynamic re-arrangement of mesquite cover over the 74 y period points to the need
for spatially-explicit monitoring.