Santa Rita Experimental Range
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Photo Station #068



JUL19360 JUL 1936 1

Photo Archive No. 68.1.1936.07

Permanent No. 344245. Temporary No. 2427. Photo Sta. 68. On 10th fence post west of gate on divide between Florida and Saw Mill Canyons (Pasture 8 and Forest Division fence). On right considerable old grass remains inside pasture 8, while adjacent area on left is heavily overgrazed, all old grass being removed and new grass just starting. Photo by Cribbs, S.R.E.R. 7/23/36. 104-C.

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SEP19850 SEP 1985 1

Photo Archive No. 68.1.1985.09

PS 68. Azimuth 270. 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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DEC20001 DEC 2000 1

Photo Archive No. 68.1.2000.12

PS 68. December 14, 2000, 1:00 p.m. Facing west. Azimuth 270. Pasture 8. ASA 100 TMAX film. 35mm lens focal length. Marker on fence post in fenceline. Matches both 1936 and 1985 photos. Fence post for PS 69 is in the scene. Some sotol in 1985 photo are now dead. Dominant grasses are plains lovegrass, cane beardgrass, sideoats grama. No Lehmann lovegrass in picture but some upslope of view in picture. Note in this photo that Mexican blue oak on fenceline in 1936 is dead, and was dead before 1985 photo. This death is also apparent in series for PS 65. M. McClaran.

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068_1_2007_04

Photo Archive No. 68.1.2007.04

PS. 068. 16 April 2007. Facing west, Azimuth 270. Elevation 1441 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present as part of fenceline, marked with tag, camera above. Area burned in July 2005. Ocotillo alive flowers emerging, but no evidence of the foreground ocotillo in the 1936 photo. Fewer oaks in background than in 1936, but no change since 2005 in spite of fire. Calliandra common. Desert spoon and Palmer agave present far left midground. Sideoats grama, sprangletop, Lehmann lovegrass, cane beardgrass, hairy grama, and plains lovegrass common grasses. Goldeneye (Viguiera sp.) dominates herbaceous layer. Witness post for PS 069 is visible in midground right. Compared to 2000, less grass, less agave and prickly pear, more Goldeneye (Viguiera sp.). M. McClaran photographer, M. McMurtry assistant.

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068_1_2012_03

Photo Archive No. 68.1.2012.03

PS. 068. 12 March 2012, 10:20 AM. Facing west, Azimuth 270. Elevation 1443 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present as part of fenceline, marked with tag, camera above. Area burned in July 2005. Ocotillo alive flowers emerging, but no evidence of the current foreground ocotillo in the 1936 photo. Fewer oaks in background than in 1936, but no change since 200 in spite of fire. Calliandra common. Desert spoon and Palmer agave present far left midground. Sideoats grama, sprangletop, Lehmann lovegrass, cane beardgrass, hairy grama, and slender grama common grasses. Witness post for PS 069 is visible in midground right. Compared to 2007, no Goldeneye (Viguiera sp.) , more grass now, and ocotillo branches have changed orientation. M. McClaran photographer, K. Hawkes assistant.

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Last updated - August 2012
Mitchel McClaran - mcclaran@u.arizona.edu