Santa Rita Experimental Range
Repeat Photography

Photo Station #066

Photo Archive No. 66.1.1936.07

Permanent No. 344243. Temporary No. 2425. Photo Sta. 66. Up Florida Canyon, 300 yards southeast of gate. Heavily grazed range adjacent to Pasture 8. All old grass consumed, new grass just starting to show, some erosion beginning to show up. Photo by Cribbs, S.R.E.R. 7/23/36. 104-C.

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Photo Archive No. 66.1.1985.09

PS 66. Azimuth 354. Sept. 13, 1985. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Robert F. Buttery.

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Photo Archive No. 66.1.2000.12

PS 66. December 14, 2000, 1:30 p.m. Facing north. Azimuth 354. Forest Service pasture adjacent to Pasture 8. ASA 100 TMAX film. 35mm lens focal length. Fencepost present, but missing a tag. Photo matches 1985, but 1936 shows more foreground than 1985 and 2000. Ocotillo, agave, opuntia, sideoats, beardgrass, scattered Lehmann lovegrass. Trees are Mexican blue oak. Lehmann lovegrass common on hillside in distant center of photo, which faces south. M. McClaran.

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Photo Archive No. 66.1.2007.04

PS. 066. 16 April 2007. Facing north, Azimuth 354. Elevation 1413 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, < 1 m tall, camera above. Witness placed next to large agave plant. Area burned in July 2005. Ocotillo, Calliandra, desert spoon, velvet pod mimosa common plants. Mexican blue oak in bottom left, same as in 1936. Prickly pear cactus present. Sideoats grama, sprangletop common grasses. Goldeneye (Viguiera sp.) dominates herbaceous layer. Compared to 2000, less grass, less agave and prickly pear, more Goldeneye (Viguiera sp.). M. McClaran photographer, M. McMurtry assistant.

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