Santa Rita Experimental Range
Repeat Photography



337_1_1935_07 JUL 1935 1

Photo Archive No. 337.1.1935.07

PS. 337. 15 July 1935. General view from NE Corner. Mesquite area at Rodent showing area where brush was scattered. Photo by Cribbs and Glendening. Perm. No. 328762.

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337_1_1960_02 FEB 1960 1

Photo Archive No. 337.1.1960.02

PS. 337. 03 February 1960. Retake of WO-328762 from NE corner of Study area 103.

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337_1_2003_04 APR 2003 1

Photo Archive No. 337.1.2003.04

PS. 337. 11 April 2003. Facing south. Film ASA 100 Plus X, 35mm focal length, Olympus OM-1 Camera. Negatives 10-12. M649 from 1960 appears to match with this view. Dry conditions. Dominant grass is Lehmann lovegrass. Some burroweed. No new mesquite leaves yet, all visible leaves are from 2002. M. McClaran photographer, S. McClaran assistant.

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337_1_2007_03 MAR 2007 1

Photo Archive No. 337.1.2007.03

PS. 337. 21 March 2007. Facing south, Azimuth 180. Pasture 2SW. Study Area 103. Elevation 1094 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. More than half of burroweed plants are dead. Barrel, prickly pear, cholla cacti. Lehmann lovegrass dominates open areas, also threeawns, cottontop, bush muhly, Boer's lovegrass. Under mesquite find Setaria, bush muhly, and cottontop grasses. Windy and cloudy conditions. Compared to 2003, less grass and burroweed, and a dead barrel cactus now. M. McClaran photographer, A. Nafus assistant.

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337_1_2010_03 MAR 2010 1

Photo Archive No. 337.1.2010.03

PS 337. 16 March 2010 11:15 AM. Facing southwest, Azimuth 225. Pasture 2SW. Study Area 103. Elevation 1092 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. Very few live burroweed plants. Barrel, prickly pear, cholla cacti. Lehmann lovegrass dominates open areas, also threeawns, cottontop, bush muhly, Boer’s lovegrass. Under mesquite find Setaria, bush muhly, and cottontop grasses. Windy conditions. Compared to 2007, less grass and burroweed, prickly size increases, and additional cholla in foreground. M. McClaran photographer, A. Dalke assistant.

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337_1_2016_03 MAR 2016 1

Photo Archive No. 337.1.2016.03

PS 337. 14 March 2016 12:37 PM. Facing southwest, Azimuth 230. Pasture 2SW. Study Area 103. Elevation 1092 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. Many live burroweed plants. Barrel, prickly pear, cholla cacti. Cottontop dominant grass, also find Lehmann lovegrass dominates open areas, and bush muhly. Under mesquite find Setaria, bush muhly, and cottontop grasses. Windy conditions. Compared to 2010, many new burroweed plants, cholla increase in size, barrel cactus on right side now dead, prickly pear on left is larger and on right is dead. M. McClaran photographer, K. Hawkes assistant.

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337_1_2022_03 MAR 2022 1

Photo Archive No. 337.1.2022.03

PS 337. 07 March 2022 1:25 PM. Facing southwest, Azimuth 230. Pasture 2SW. Study Area 103. Elevation 1092 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. Many live burroweed plants. Prickly pear, and cholla cacti. Lehmann lovegrass is dominant grass, also find cottontop, Cottea, and bush muhly. Under mesquite find Setaria, bush muhly, and cottontop grasses. Abundant annual grama grass (Bouteloua aristidoides) from wet summer 2021. Compared to 2016, much less bare ground because of abundant annual grama grass (Bouteloua aristidoides) from wet summer 2021, larger burroweed plants, cholla increased in size, lost barrel cactus, added three plants of Cottea, and Lehmann lovegrass is now dominant grass. M. McClaran photographer, A. Gorlier and J. Bartolome assistants.

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337_2_1935_10 OCT 1935 2

Photo Archive No. 337.2.1935.07

PS. 337. 16 October 1935. General view. P5. Photo by Cribbs and Glendening. Perm. No. 328944.

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337_2_2003_04 APR 2003 2

Photo Archive No. 337.2.2003.04

PS. 337. 11 April 2003. Facing southwest. Film ASA 100 Plus X, 35mm focal length, Olympus OM-1 Camera. Negatives 8-9. Dry conditions. Dominant grass is Lehmann lovegrass. Some burroweed. No new mesquite leaves yet, all visible leaves are from 2002. M. McClaran photographer, S. McClaran assistant.

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337_2_2007_03 MAR 2007 2

Photo Archive No. 337.2.2007.03

PS. 337. 21 March 2007. Facing southwest, Azimuth 225. Pasture 2SW. Study Area 103. Elevation 1094 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. More than half of burroweed plants are dead. Barrel, prickly pear, cholla cacti. Lehmann lovegrass dominates open areas, also threeawns, cottontop, bush muhly, Boer's lovegrass. Under mesquite find Setaria, bush muhly, and cottontop grasses. Windy and cloudy conditions. Compared to 2003, less grass and burroweed, and a dead barrel now. M. McClaran photographer, A. Nafus assistant.

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337_2_2010_03 MAR 2010 2

Photo Archive No. 337.2.2010.03

PS 337. 16 March 2010 10:50 AM. Facing southwest, Azimuth 235. Pasture 2SW. Study Area 103. Elevation 1092 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. Very few live burroweed plants. Barrel, prickly pear, cholla cacti. Lehmann lovegrass dominates open areas, also threeawns, cottontop, bush muhly, Boer’s lovegrass. Under mesquite find Setaria, bush muhly, and cottontop grasses. Windy conditions. Compared to 2007, less grass and burroweed, prickly size increases, and additional cholla in foreground. M. McClaran photographer, A. Dalke assistant.

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337_2_2016_03 MAR 2016 2

Photo Archive No. 337.2.2016.03

PS 337. 14 March 2016 12:47 PM. Facing southwest, Azimuth 235. Pasture 2SW. Study Area 103. Elevation 1092 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. Many live burroweed plants. Barrel, prickly pear, cholla cacti. Cottontop dominant grass, also find Lehmann lovegrass dominates open areas, and bush muhly. Under mesquite find Setaria, bush muhly, and cottontop grasses. Windy conditions. Compared to 2010, many new burroweed plants, cholla increase in size, barrel cactus on right side now dead, prickly pear on left is larger and on right is dead. M. McClaran photographer, K. Hawkes assistant.

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337_2_2022_03 MAR 2022 2

Photo Archive No. 337.2.2022.03

PS 337. 07 March 2022 1:34 PM. Facing southwest, Azimuth 235. Pasture 2SW. Study Area 103. Elevation 1092 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Northeast corner post of Study Area 103, camera above. Mesquite alive. Many live burroweed plants. Prickly pear, and cholla cacti. Lehmann lovegrass is dominant grass, also find cottontop, Cottea, and bush muhly. Under mesquite find Setaria, bush muhly, and cottontop grasses. Abundant annual grama grass (Bouteloua aristidoides) from wet summer 2021. Compared to 2016, much less bare ground because of abundant annual grama grass (Bouteloua aristidoides) from wet summer 2021, larger burroweed plants, cholla increased in size, lost barrel cactus, added three plants of Cottea, and Lehmann lovegrass is now dominant grass. M. McClaran photographer, A. Gorlier and J. Bartolome assistants.

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Last updated - February 2023
Mitchel McClaran - mcclaran@u.arizona.edu