Santa Rita Experimental Range
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Photo Station #127



MAR19370 MAR 1937 1

Photo Archive No. 127.1.1937.03

Permanent No. 344395. Temporary No. 2701. Photo Sta. No. 127. Looking south-south-west and to compare with No. 2700. Wide sloping mesa across the road from 2700. Showing only a few scattered mature burroweed plants and no reproduction. Mesquite is dense along wash in the background but only scattered on the rest of this mesa. Grass density is .1-.15 of Ad, Rg, and Bf. Soil is loose and not eroded. This is at the upper limit of burroweed at the present. Area not to be cleared. Photo by Cribbs, S.R.E.R. 3/4/37. 400-B.

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JUN19481 JUN 1948 1

Photo Archive No. 127.1.1948.06

6-48. A48-39. P.S. 127--repeat looking S. Mesquite has increased greatly in size since 1937 and in the distance probably in numbers also. Grass stand appears about the same although more coarse grass is coming into the area. Not much change in burroweed. SRER. Culley. 10H(3)b.

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AUG19520 AUG 1952 1

Photo Archive No. 127.1.1952.08

P.S. 127. B-52-1. Study area 107 near Foothill Tank. Repeat of 344395. Aug. 6, 1952.

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JUL19851 JUL 1985 1

Photo Archive No. 127.1.1985.07

PS 127. Azimuth 215. July 17, 1985. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Taken approximately 22' from PS on Azimuth 215. Robert F. Buttery.

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APR20001 APR 2000 1

Photo Archive No. 127.1.2000.04

PS 127. April 24, 2000, 1:30 p.m. Facing southwest. Azimuth 215. Pasture 21. ASA 135, Plus X film. 35mm lens focal length. South of road - unmarked by rebar; fence post on road edge; 30' south of road beyond trees. Burroweed died back; foreground mesquite present in 1985 photo. Large mesquite alive, beginning to leaf out. Eragrostis lehmanniana dominant grass. Muhlenbergia porteri and Digitaria californica under mesquite. M. McClaran.

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127_1_2007_03 MAR 2007 1

Photo Archive No. 127.1.2007.03

PS. 127. 28 March 2007. Facing south, Azimuth 215. Pasture 21. Elevation 1233 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Painted rebar present, camera above. Mesquite alive. About 25% burroweed are dead. Cholla, prickly pear present; and barrel cactus behind mesquite. Trees alive from 1937 photo are: tree directly beneath Mt Hopkins (telescope) is in distant center of current photo; larger tree to the right of that tree in 1937 is now dead; and the 2 trees straddling Elephant Butte are now alive and the left of those is in the far right of current photo. Small Lehmann lovegrass dominant, cottontop present; and bush muhly under larger mesquites. Compared to 2000, less grass, more prickly pear, and foreground mesquite is much larger now. M. McClaran photographer, A. Nafus assistant.

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127_1_2012_03 MAR 2012 1

Photo Archive No. 127.1.2012.03

PS. 127. 12 March 2012, 12:47 PM. Facing south, Azimuth 215. Pasture 21. Elevation 1229 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Painted rebar present, camera above. Mesquite alive and some 2011 leaves still green and present. Cholla, prickly pear present; and barrel cactus behind mesquite. Trees alive from 1937 photo are: tree directly beneath Mt Hopkins (telescope) is in distant center of current photo; larger tree to the right of that tree in 1937 is now dead; and the 2 trees straddling Elephant Butte are now alive and the left of those is in the far right of current photo. Lehmann lovegrass dominant, cottontop present; and bush muhly under larger mesquites. Compared to 2007, more grass and more prickly pear; continued burroweed mortality with many skeletons and only one living plant; and foreground mesquite is much larger now. M. McClaran photographer, A. Dalke and K. Hawkes assistants.

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