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Photo Station #273



SEP19480 SEP 1948 1

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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APR19600 APR 1960 1

Photo Archive No. 273.1.1960.04

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

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JUL19870 JUL 1987 1

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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OCT20001 OCT 2000 1

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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273_1_2007_03 MAR 2007 1

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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273_1_2010_03 MAR 2010 1

Photo Archive No. 273.1.2010.03

PS. 273. 15 March 2010 10:40 AM. Facing northeast, Azimuth 30. Pasture 12B. Elevation 938 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera 0.25 m south of witness because prickly pear around witness. Ocotillo present. Mesquite alive. No burroweed present. Some scattered snakeweed present. Lycium under mesquite right foreground. Distant center large ocotillo. Prickly pear and cholla cacti. Celtis distant left. Cottontop, tanglehead, and Lehmann lovegrass grasses. Windy conditions. Compared to 2007, less prickly pear and slightly less grass now. Fate of four mesquite plants at top center of 1948 photo, described from left to right: left plant is alive in 1960, dead in 2000, skeleton in 2007 and 2010; left of center plant is alive in 2010; right of center plant is possibly dead in 1960 and probably dead in 2007 (now Lycium is growing there); and far right plant in alive in 2010. M. McClaran photographer, A. Dalke assistant.

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SEP19481 SEP 1948 2

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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APR19601 APR 1960 2

Photo Archive No. 273.2.1960.04

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

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JUL19871 JUL 1987 2

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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OCT20002 OCT 2000 2

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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273_2_2007_03 MAR 2007 2

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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273_2_2010_03 MAR 2010 2

Photo Archive No. 273.2.2010.03

PS. 273. 15 March 2010 11:15 AM. Facing east, Azimuth 108. Pasture 12B. Elevation 938 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera 0.25 m west of witness because prickly pear around witness. Ocotillo present. Mesquite alive. One burroweed present. Only a few widely scattered snakeweed present. Small Lycium right midground. Center foreground is catclaw. Cholla and prickly pear present. Cottontop, tanglehead, slender grama, threeawns, and Lehmann lovegrass. Windy conditions. Prickly pear in midground left is much smaller than in 2007. The two obvious mesquite skeletons in the right mid-ground died between 1960 and 1987. Compared to 2007, less prickly pear and less grass now. M. McClaran photographer, A. Dalke assistant.

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Last updated - May 2010
Mitchel McClaran - mcclaran@u.arizona.edu