Santa Rita Experimental Range
Repeat Photography

Photo Station #119

Photo Archive No. 119.1.1936.08

Permanent No. 344257. Temporary No. 2439. Photo Station #119. Whitehouse Canyon road, 1/8 mile south of bridge. 150 yards east to first draw. Small draw with well-grassed slope, slender and sideoats gramas being the principal grasses. In the bottom of the draw mesquite and mimosa shrubs are effectively preventing erosion. Photograph taken in pasture 8. Photo by Cribbs, S.R.E.R. 8/25/36. 104-C.

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Photo Archive No. 119.1.1988.04

PS-119. Azimuth 188. April 12, 1988. RFB. Canon AE-1 camera. 35mm WA lens. Robert F. Buttery. Not exact field of view as in earlier photo.

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Photo Archive No. 119.1.2000.05

PS 119. May 17, 2000, 2:04 p.m. Facing south. Azimuth 188. Pasture 4. ASA 135, Plus X film. 35mm lens focal length. Marked post on edge of actively-cutting wash. Photo taken 10' north of post. Large shrubs in wash are Baccharis and Celtis. Two mimosa at fencepost. Under tree are sideoats, Eragrostis lehmanniana, Boer's lovegrass, graythorn. Two small mesquite behind large mesquite in 1936 photo, one alive, one dead. M. McClaran.

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Photo Archive No. 119.1.2007.03

PS. 119. 26 March 2007. Facing south, Azimuth 188. Pasture 4. Elevation 1135 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, and in photo view, camera about 5 m north of witness. Mesquite alive leaves beginning to emerge. Foreground shrubs velvet pod mimosa, Lycium, desert broom and turpentine (?) under mesquite. East of wash find catclaw acacia. Calliandra present, leaves and flowers emerging. Lehmann lovegrass, sideoats grama, cane beardgrass and a few green sprangletop. Under mesquite find cottontop, Boer's lovegrass, sideoats grama and Lehmann lovegrass. No evidence of 2005 fire. Compared to 2000, velvet pod mimosa larger now. M. McClaran photographer, M. McGregor assistant.

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Photo Archive No. 119.1.2010.03

PS. 119. 17 March 2010 11:40 AM. Facing south, Azimuth 190. Pasture 4. Elevation 1124 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, and camera one foot east. The retake starting in 2007 was not correctly located. Mesquite alive. Foreground shrubs velvet pod mimosa, Lycium, desert broom, zizyphus and turpentine bush under mesquite. East of wash find catclaw acacia and canyon hackberry. Calliandra present. Lehmann lovegrass, sideoats grama, cane beardgrass. Under mesquite find cottontop, Boer's lovegrass, sideoats grama and Lehmann lovegrass. No evidence of 2005 fire. Distant mesquite on far left was alive in 1936 photo and is still alive. One small mesquite behind large mesquite in 1936 is still alive; but, the other small mesquite behind the large one in 1936 is now dead. Compared to 2007, no spangletop plants present, and less grass on slopes above. M. McClaran photographer, A. Dalke assistant.

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Photo Archive No. 119.1.2016.03

PS. 119. 15 March 2016 11:35 AM. Facing south, Azimuth 190. Pasture 4. Elevation 1124 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, and camera one foot east. The retake starting in 2007 was not correctly located. Mesquite alive. Foreground shrubs velvet pod mimosa, Lycium, desert broom, zizyphus and turpentine bush under mesquite. East of wash find catclaw acacia and canyon hackberry. Calliandra and snakeweed present. Lehmann lovegrass, sideoats grama, and tanglehead, cane beardgrass. Under mesquite find three awn, Boer’s lovegrass, sideoats grama and Lehmann lovegrass. No evidence of 2005 fire. Distant mesquite on far left was alive in 1936 photo and is still alive. One small mesquite behind large mesquite in 1936 is still alive; but, the other small mesquite behind the large one in 1936 is now dead. Compared to 2010, more tanglehead plants in background behind mesquite; no cottontop plants present, and channel has filled some with new sediment and now has more plant cover. M. McClaran photographer, K. Hawkes assistant.

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Photo Archive No. 119.1.2022.03

PS. 119. 17 March 2022 12:10 PM. Facing south, Azimuth 190. Pasture 4. Elevation 1124 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, and camera one foot east. The retake starting in 2007 was not correctly located. Some mysteries about the match with 1936 image include 1) large, low horizontal branch present now on large foreground mesquite was not present in 1936, and 2) alignment of small mesquite behind large foreground mesquite in 1936 are further left of the foreground mesquite than now, suggesting current camera location is further right than in 1936, but it currently not possible to move the camera left because that would be in the wash below a steep bank. Mesquite alive. Foreground shrubs velvet pod mimosa, Lycium, desert broom, canyon hackberry, zizyphus and turpentine bush under mesquite. East of wash find catclaw acacia and canyon hackberry. Calliandra and snakeweed present. Lehmann lovegrass, sideoats grama, and tanglehead. Under mesquite find three awn, sideoats grama, sprangletop, Setaria and Lehmann lovegrass. Distant mesquite on far left was alive and small in 1936 photo and is still alive. One small mesquite behind large mesquite in 1936 is still alive; but, the other small mesquite behind the large one in 1936 is now dead. Compared to 2016, less total grass cover with decline in tanglehead far right, added sprangletop, Setaria, and lost Boer’s lovegrass and cane beardgrass. M. McClaran photographer, A. Gorlier assistant.

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