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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