Santa Rita Experimental Range
Repeat Photography

Photo Station #273

Photo Archive No. 273.1.1948.09

A48-220. Photo station 273, pasture 12B, looking north. Fair stand Tca and Adi. Heavy cover annuals, finger grass and Eragrostis. Fair to good growth and still fairly green. 9/7.

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Photo Archive No. 273.1.1960.04

T-210. 6 Apr. 60. SRER, PS 273 looking north. 10H3b.

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Photo Archive No. 273.1.1987.07

PS 273. Azimuth 30. July 15, 1987. RFB. Canon AE-1 35mm camera. 35mm WA lens. Robert F. Buttery.

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Photo Archive No. 273.1.2000.10

PS 273. October 12, 2000, 2:00 p.m. Facing northeast. Azimuth 30. Pasture 12B. ASA 125 film. 35mm lens focal length. Large ocotillo in background is distinctive for location because no others present in area. Eragrostis lehmanniana and Heteropogon contortus abundant; Digitaria californica common. Fence post almost hidden by Opuntia engelmannii. M. McClaran.

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Photo Archive No. 273.1.2007.03

PS. 273. 21 March 2007. Facing northeast, Azimuth 30. Pasture 12B. Elevation 938 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera 0.25 m south of witness because prickly pear around witness. Ocotillo present. Mesquite alive. Burroweed mostly dead, scattered snakeweed present. Lycium under mesquite right foreground. Distant center large ocotillo. Prickly pear and cholla cacti. Celtis distant left. Cottontop, tanglehead, Lehmann lovegrass and Chloris grasses. Windy and cloudy conditions. Compared to 2000, more prickly pear now. M. McClaran photographer, A. Nafus assistant.

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Photo Archive No. 273.2.1948.09

A48-221. Photo station 273, pasture 12B, looking east. Fair stand Tca and Adi. Heavy cover annuals, finger grass and Eragrostis. Fair to good growth and still fairly green. 9/7.

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Photo Archive No. 273.2.1960.04

T-211. 6 Apr 60. SRER, P.S. 273 looking east. 10H3b.

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Photo Archive No. 273.2.1987.07

PS 273. Azimuth 108. July 15, 1987. RFB. Canon AE-1 35mm camera. 35mm WA lens. Robert F. Buttery.

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Photo Archive No. 273.2.2000.10

PS 273. October 12, 2000, 2:00 p.m. Facing east. Azimuth 108. Pasture 12B. ASA 125 film. 35mm lens focal length. Dominant grasses are Heteropogon contortus, Eragrostis lehmanniana, Bothriochloa barbinodis (cane beardgrass), and Digitaria californica. M. McClaran.

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Photo Archive No. 273.2.2007.03

PS. 273. 21 March 2007. Facing east, Azimuth 108. Pasture 12B. Elevation 938 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera 0.25 m west of witness because prickly pear around witness. Ocotillo present. Mesquite alive. Burroweed mostly dead, very widely scattered snakeweed present. Small Lycium right midground. Center foreground is catclaw. Cholla and prickly pear present. Cottontop, tanglehead, Lehmann lovegrass and Chloris grasses. Windy and cloudy conditions. Compared to 2000, more prickly pear now. M. McClaran photographer, A. Nafus assistant.

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