Santa Rita Experimental Range
Repeat Photography

Photo Station #070

Photo Archive No. 70.1.1936.07

Permanent No. 344247. Temporary No. 2429. Photo Station 70. 50 feet inside division fence between Forest and pasture 8. Showing steep slope with good covering of grass. Photo by Cribbs, S.R.E.R. 7/23/36. 104-C.

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Photo Archive No. 70.1.1985.09

PS 70. Azimuth 9. Sept. 13, 1985. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Robert F. Buttery. Not exact field of view as in earlier photo.

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Photo Archive No. 70.1.2000.12

PS 70. December 14, 2000, 2:00 p.m. Facing north. Azimuth 9. Pasture 8. ASA 100 TMAX film. 35mm lens focal length. Matches 1936 and 1985 photos. Large shrub in foreground is Eysenhardtia polystachya (kidneywood); at least four others behind this plant. Large kidneywood was present in 1985 and probably in 1936. Sideoats and cane beardgrass dominate. M. McClaran.

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Photo Archive No. 70.1.2007.04

PS. 070. 16 April 2007. Facing north, Azimuth 009. Elevation 1426 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera above. Area burned in July 2005. Six kidneywood plants present, at least two of which were present in 1936 photo. Mimosa biuncifera, Calliandra, agave, desert spoon, mesquite in bottom left. Prickly pear cactus present. Sideoats grama, sprangletop, plains lovegrass common grasses. Goldeneye (Viguiera sp.) species 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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Photo Archive No. 70.1.2012.03

PS. 070. 13 March 2012, 11:20 AM. Facing north, Azimuth 009. Elevation 1424 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above. Area burned in July 2005. Six kidneywood plants present, at least two of which were present in 1936 photo. Mimosa dysocarpa, Calliandra, agave, desert spoon, mesquite in bottom left. Prickly pear cactus present. Sideoats grama, sprangletop, Lehmann lovegrass and cane beardgrass are common grasses. Compared to 2007, more grass, but lost plains lovegrass, less prickly pear, less Goldeneye (Viguiera sp.), lost plains lovegrass; and ocotillo in left midground died and stalks have fallen to ground. M. McClaran photographer, K. Hawkes assistant.

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Photo Archive No. 70.1.2018.03

PS. 070. 06 March 2018, 11:30 AM. Facing north, Azimuth 009. Elevation 1424 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above. Area burned in July 2005. Six kidneywood plants present, at least two of which were present in 1936 photo. Mimosa dysocarpa, Calliandra, desert spoon, mesquite in bottom left. Prickly pear cactus present. Sideoats grama (most common grass), sprangletop, Lehmann lovegrass, threeawn, cottontop and cane beardgrass are common grasses. Compared to 2012, return of goldeneye (Viguiera sp.); more dead grass but also more live grass cover; more prickly pear, fewer desert spoon plants; dead stems of midground kidneywood now broken off and on the ground but plant still alive; and agave is dead on right edge of image. M. McClaran photographer, K. Landreville assistant.

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