Santa Rita Experimental Range
Repeat Photography

Photo Station #055

Photo Archive No. 55.1.1935.07

Perm. No. 328706. Temp. No. 1905. Photo Station #55. Taken just south of Florida Canyon along the east boundary fence of pasture 19 looking north. On the left moderately grazed foothill range with slender grama, spruce-top grama, and calliandra showing vigorous growth. On the right very closely grazed range has practically eliminated all grasses and even calliandra is largely gone. Photo by S.R.E.R. Cribbs & Culley, July 1935. 104-C.

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Photo Archive No. 55.1.1951.10

PS 55. B-51-48. On fence between Past 8 and outside. Looking ne. 40-22-13-3/4". Repeat of 328706. Bohning, SRER. 2 Oct 1951.

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Photo Archive No. 55.1.1986.10

PS 55. Approx. Azimuth 38. Oct. 23, 1986. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Robert F. Buttery. Not exact field of view as in earlier photos.

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Photo Archive No. 55.1.2000.05

PS 55. May 17, 2000, 9:15 a.m. Facing northeast. Azimuth 38 (approx). Pasture 8. ASA 135, Plus X film. 35mm lens focal length. Marked post in fenceline on hill south of road. At base of mesquite in fence is a barrel cactus; calliandra, ratany, mimosa. Under trees are sideoats, cottontop, calliandra. Eragrostis lehmanniana, occasional slender grama, beardgrass, sprangletop. M. McClaran.

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Photo Archive No. 55.1.2007.04

PS. 055. 04 April 2007. Facing north, Azimuth 38. Pasture 8. Elevation 1262 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present in boundary fence, camera above. Mesquite alive; velvet pod mimosa, Krameria and Calliandra in leaf and flower are low shrubs, ocotillo present left distant. Barrel, and rainbow (under right foreground mesquite) cacti. Good match with 1935 photo, large tree midground left of fence was not obvious in 1936 but present in 1951. Tree in fenceline was cut and stump is visible. Lehmann lovegrass dominant, also find sideoats grama and green sprangletop under right foreground mesquite. Calochortus blooming. Compared to 1999, less grass. M. McClaran photographer, K. Lohse assistant.

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Photo Archive No. 55.1.2010.03

PS. 055. 18 March 2010 2:50 PM. Facing north, Azimuth 25. Pasture 8. Elevation 1255 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present in boundary fence, camera above. Mesquite alive; velvet pod mimosa, Krameria and Calliandra are low shrubs, ocotillo present left distant. Barrel cactus present. Rainbow cactus under right foreground mesquite. Good match with 1935 photo, large tree midground left of fence was not obvious in 1936 but present in 1951. Tree in fenceline was cut and stump is visible. Lehmann lovegrass dominant, also find sideoats grama. Setaria under mesquite. Windy conditions. Compared to 2007, more grass now. M. McClaran photographer, A. Dalke assistant.

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Photo Archive No. 55.1.2016.03

PS. 055. 16 March 2016 1:02 PM. Facing north, Azimuth 30. Pasture 8. Elevation 1255 m. ISO 120, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present in boundary fence, camera above. Mesquite alive; velvet pod mimosa, Krameria and Calliandra are low shrubs, ocotillo present left distant, and Dasylirion in distant right. Good match with 1935 photo, large tree midground left of fence was not obvious in 1936 but present in 1951. Tree in fenceline was cut and stump is visible. Lehmann lovegrass dominant, also find sideoats grama. Setaria under mesquite. Windy conditions. Compared to 2010, barrel cactus and rainbow cactus are now dead; also Dasylirion is larger, and increase in grass includes three awn, cottontop. M. McClaran photographer, K. Hawkes assistant.

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Photo Archive No. 55.1.2022.03

PS. 055. 14 March 2022 12:43 PM. Facing north, Azimuth 30. Pasture 8. Elevation 1255 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present in boundary fence, camera above. Mesquite alive; velvet pod mimosa, Krameria and Calliandra are low shrubs, ocotillo present left distant and along fence behind mesquite and prickly pear, and Dasylirion in distant right. Good match with 1935 photo. The 4 dominant mesquites present in 1951 are still alive. The large tree midground left of fence was not obvious in 1935 but present in 1951. Tree in fenceline was cut and stump is visible. Lehmann lovegrass dominant, also find sideoats grama. Setaria and cottontop under mesquite. Sprangletop and cane beardgrass plants are present. Prickly pear along fence. Commicarpus under mesquite. Compared to 2016, less grass cover but more species represented, including cottontop, cane beardgrass, and sprangletop, prickly pear now present, and Dasylirion is now dead. M. McClaran photographer, A. Gorlier assistant.

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