Santa Rita Experimental Range
Repeat Photography

Photo Station #018

Photo Archive No. 18.1.1936.06.1

Perm. No. 329028. Temp. No. 2294. Photo Station #18, at Plot #1. Study Area 106, located on the south side of the road leading to Box Station. Photo shows 50x50 burroweed plot just before burning. This is part of the burroweed study project to determine the effect of burning on burroweeds and other vegetation at different seasons of the year. 1/10-168"-K2-CP. Photo by Cribbs, S.R.E.R. 6/11/36. Compare 2295. 400-D.

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Photo Archive No. 18.1.1936.06.2

Perm. No. 329029. Temp. No. 2295. Photo Station #18. Showing 50x50 ft. burroweed plot #1, at Study Area #106, immediately after burning. 1/10-16-8"-K2-CP. Photo by Cribbs, S.R.E.R. 6/11/36. Compare 2294. 400-D.

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Photo Archive No. 18.1.1952.09

P.S. 18. B-52-12. Study Area 106 looking NE - burroweed burning plot. 35-45-13 3/4". Repeat of 329029. Bohning, SRER. 4 Sept. 1952.

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Photo Archive No. 18.1.1960.03

T-185. P.S. #18. 25 Mar 1960. 10H3b.

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Photo Archive No. 18.1.1985.06

PS-18. Azimuth 264. June 26, 1985. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Robert F. Buttery.

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Photo Archive No. 18.1.2000.04

PS 18. April 21, 2000, 12:30 p.m. Facing west. Azimuth 264. Pasture 2S. Plus X, ASA 125 film. 35mm lens focal length. Witness present; no tag; marked with pencil. Burned in 1994, killing most trees and all Haplopappus tenuisectus. Replaced by Eragrostis lehmanniana and a couple of Heteropogon contortus. Remaining trees are sprouting. Fence on left is ARS watershed study. M. McClaran.

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