Image #OTT-3: Pinus ponderosa woodland in the Eastern High Cascades, characteristic of the Metolius site (Site 5) studied as part of the Oregon Transect Ecosystem Research Project (OTTER). (Artemesia tridentata var. tridentata and the nitrogen-fixing shrub Purshia tridentata are present in the understory. Photograph taken about 1976 by Dr. H. Gholz, University of Florida, USA).