Santa Rita Experimental Range
Repeat Photography

Photo Station #252

Photo Archive No. 252.1.1948.07

7-48. A48-155. P.S. 252 first photo 50 feet west of the road to the Red tank about half way up from Helvetia road. Near quadrat WD 19. Looking NW. Fair stand of grass Ber, Agl, Hco, and others. Heavy growth of Afr and Pve. SRER. Culley. 10H(3)b.

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Photo Archive No. 252.1.1960.08

T-283. 4 Aug 60. SRER, P.S. 252. 10H3b.

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Photo Archive No. 252.1.1987.07

PS 252. Azimuth 348. July 24, 1987. RFB. Canon AE-1 35mm camera. 35mm WA lens. Robert F. Buttery.

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Photo Archive No. 252.1.2000.06

PS 252. June 9, 2000, 3:00 p.m. Facing north. Azimuth 348. Pasture 6A. Plus X, ASA 125 film. 35mm lens focal length. Fencepost present and marked; NNW across wash from Red Tank along cattle trail approx. 0.25 mi. from Red Tank. Two catclaw in foreground. Lehmann lovegrass; burroweed. At a distance in center of old photos is graythorn, now surrounded by catclaw. Graythorn is smaller than in earlier photos. M. McClaran.

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Photo Archive No. 252.1.2007.03

PS. 252. 30 March 2007. Facing north, Azimuth 348. Pasture 6A. Elevation 1169 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera above. Mesquite alive, about 85% burroweed alive, Calliandra flowering. Prickly pear, cholla and barrel cacti present. Lehmann lovegrass is dominant grass, also find cottontop, tanglehead, and black grama; and Setaria and bush muhly under larger mesquite. In 1948 photo, the large plant in center distant was tall graythorn and catlcaw growing together, both lost height but are not dead in 2007. Dead mesquite in far right, was alive in 1948 photo. Compared to 2000, less grass and cholla, more prickly pear. M. McClaran photographer, F. Mashiri assistant.

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Photo Archive No. 252.1.2009.03

PS. 252. 19 March 2009. Facing north, Azimuth 348. Pasture 6A. Elevation 1179 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera above. Mesquite, burroweed, and Calliandra alive. Prickly pear, cholla and barrel cacti present. Lehmann lovegrass is dominant grass, also find cottontop, tanglehead, and black grama; and Setaria and bush muhly under larger mesquite. In 1948 photo, the large plant in center distant was tall graythorn and catlcaw growing together, both lost height but are not dead in 2007. Dead mesquite in far right, was alive in 1948 photo. Compared to 2007 grass increase including Setaria, cottontop and Lehmann lovegrass; also extensive stem girdling. M. McClaran photographer, A. Peterson assistant.

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Photo Archive No. 252.1.2015.03

PS. 252. 19 March 2015. 11:47 am. Facing north, Azimuth 348. Pasture 6A. Elevation 1179 m. ISO 250, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above. Mesquite alive, and leaves emerging, Burroweed present with catclaw (leaves emerging), shrubby buckwheat, zinnia and Ziziphus (with leaves) alive. Prickly pear and cholla alive, but all barrel cacti appear to be dead. Lehmann lovegrass, cottontop, tanglehead, and black grama; and Setaria and bush muhly under mesquite. In 1948 photo, the large plant in center distant was tall graythorn and catlcaw growing together, both lost height but are not dead. Dead mesquite in far right, was alive in 1948 photo. Compared to 2009, Calliandra no longer present, decrease in grass and Lehmann lovegrass appears to have decreased the most, decline in prickly pear. M. McClaran photographer, K. Hawkes assistant.

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Photo Archive No. 252.1.2021.03

PS. 252. 22 March 2021. 12:29 pm. Facing north, Azimuth 348. Pasture 6A. Elevation 1179 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above. Mesquite alive. Burroweed present with catclaw, shrubby buckwheat, littleleaf baccharis under catclaw on right, snakeweed in distant far right, zinnia and Ziziphus alive. Prickly pear and cholla alive. Lehmann lovegrass, cottontop, tanglehead, and black grama; and Setaria and bush muhly under mesquite. In 1948 photo, the large plants in center distant was tall graythorn and catclaw growing together, both lost height but are not dead. Dead mesquite in far right, was alive in 1948 photo. Compared to 2015, Calliandra no longer present; increase in perennial grass and Lehmann lovegrass appears to have increased the most; prickly pear increased in size; and added snakeweed and littleleaf baccharis to plant list. M. McClaran photographer, A. Gorlier assistant.

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