Santa Rita Experimental Range
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Photo Station #280



SEP19480 SEP 1948 1

Photo Archive No. 280.1.1948.09

A48-234. Photo station 280, pasture #3, looking north. Scattered bunches Mpo and Tca. Light cover annual grass. Poor growth and all dry. Sep. 48.

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OCT19540 OCT 1954 1

Photo Archive No. 280.1.1954.10

P.S. 280. B-54-77. Past. 3, looking to north. 1/50-f22. Repeat of A-48-234. Bohning SRER. 15 Oct. 54.

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APR19601 APR 1960 1

Photo Archive No. 280.1.1960.04

T-222. 15 Apr 60. SRER, P.S. 280. 10H3b.

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NOV19841 NOV 1984 1

Photo Archive No. 280.1.1984.11

PS 280. Azimuth 360. Nov. 7, 1984. RFB. Honeywell Pentax 35mm camera. 35mm WA lens. f:11 1/125 20'. 11:10 A.M. Robert F. Buttery.

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FEB19881 FEB 1988 1

Photo Archive No. 280.1.1988.02

PS 280. Az 360. Feb. 10, 1988. RFB. Canon AE-1 camera. 35mm WA lens. f:5.6 1/125 Inf. 4:40 P.M. Robert F. Buttery.

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APR20001 APR 2000 1

Photo Archive No. 280.1.2000.04

PS 280. April 7, 2000. Facing north. Azimuth 360. Pasture 3. Plus X, ASA 125 film. 35mm lens focal length. 2' fence post with tag (shovel of post exposed). Mesquite alive; Eragrostis lehmanniana dominant grass; some Digitaria californica, Aristida, Muhlenbergia porteri. M. McClaran.

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280_1_2007_03 MAR 2007 1

Photo Archive No. 280.1.2007.03

PS. 280. 13 March 2007. Facing north, Azimuth 0. Pasture 3. Elevation 964 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and cholla cacti. Bouteloua aristidoides, Lehmann lovegrass, and threeawns main grasses. Some Rothrock grama present. Some dead burroweed, but generally in better shape than most places. Cottontop, bush muhly, and Setaria under mesquite, burroweed and prickly pear. Hedgehog cactus, barrel cactus, and cane beardgrass in center distant behind mesquite. Compared to 2000, less grass, dead burroweed, and larger prickly pear. M. McClaran photographer, no assistant.

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280_1_2009_03 MAR 2009 1

Photo Archive No. 280.1.2009.03

PS. 280. 16 March 2009. Facing north, Azimuth 0. Pasture 3. Elevation 961 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and cholla cacti. Bouteloua aristidoides and threeawns grasses dominant in front of road, whereas cottontop and large threeawn common near mesquite beyond road. Beyond those mesquite find Rothrock grama, cane beardgrass as well as others previously mentioned. Burroweed is dominant shrub. Cottontop, bush muhly, and Setaria under those mesquite. Hedgehog cactus, barrel cactus in center distant behind mesquite. Compared to 2007, less Lehmann lovegrass, increase in small (10-25 cm tall) burroweed, and small cholla in center foreground. M. McClaran photographer, A. Peterson assistant.

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280_1_2015_03 MAR 2015 1

Photo Archive No. 280.1.2015.03

PS. 280. 16 March 2015. 9:59 am. Facing north, Azimuth 0. Pasture 3. Elevation 961 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and cholla cacti. Bouteloua aristidoides and threeawns grasses dominant in front of road, whereas cottontop and large threeawn common near mesquite beyond road. Beyond those mesquite find Rothrock grama, as well as others previously mentioned. Burroweed is dominant shrub, and several little leaf baccharis in left foreground. Cottontop, bush muhly, and Setaria under those mesquite. Hedgehog cactus, barrel cactus in center distant behind mesquite. Compared to 2009, less Bouteloua aristidoides, increase in size and number of burroweed, and decrease in prickly pear in foreground. M. McClaran photographer, K. Hawkes assistant.

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280_1_2021_03 MAR 2021 1

Photo Archive No. 280.1.2021.03

PS. 280. 08 March 2021. 10:30 am. Facing north, Azimuth 0. Pasture 3. Elevation 961 m. ISO 200, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and cholla cacti. Lehmann lovegrass and cottontop dominant grasses in front of road, whereas cottontop and large threeawn are common near mesquite beyond road. Beyond those mesquites find Rothrock grama, as well as others previously mentioned. Burroweed is dominant shrub, and several little leaf baccharis in left foreground. Cottontop, bush muhly, and Setaria under those mesquite. Hedgehog cactus, barrel cactus in center distant behind mesquite. Compared to 2015, less Bouteloua aristidoides; decrease in number of burroweed; and decrease in number and size of prickly pear. M. McClaran photographer, A. Gorlier assistant.

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SEP19481 SEP 1948 2

Photo Archive No. 280.2.1948.09

A48-233. Photo station 280, pasture #3, looking West. Scattered bunches Mpo and Tca. Light cover annual grass. Poor growth and all dry. Sep. 48.

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APR19600 APR 1960 2

Photo Archive No. 280.2.1960.04

T-221. 15 Apr 60. SRER, P.S. 280. 10H3b.

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NOV19840 NOV 1984 2

Photo Archive No. 280.2.1984.11

PS 180. Azimuth 275. Nov. 7, 1984. RFB. Honeywell Pentax 35mm camera. 35mm WA lens. f:8-11 1/125 20'. 11:00 A.M. Robert F. Buttery.

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FEB19880 FEB 1988 2

Photo Archive No. 280.2.1988.02

PS 280. Az 275. Feb. 10, 1988. RFB. Canon AE-1 camera. 35mm WA lens. f:4 1/125 Inf. 4:35 P.M. Robert F. Buttery.

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APR20002 APR 2000 2

Photo Archive No. 280.2.2000.04

PS 280. April 7, 2000. Facing west. Azimuth 275. Pasture 3. Plus X, ASA 125 film. 35mm lens focal length. 2' fence post with tag (shovel of post exposed). Notice new ocotillo to north; mesquite alive; dominant grass is Eragrostis lehmanniana; Muhlenbergia porteri under mesquite; some cane beardgrass. M. McClaran.

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280_2_2007_03 MAR 2007 2

Photo Archive No. 280.2.2007.03

PS. 280. 13 March 2007. Facing west, Azimuth 278. Pasture 3. Elevation 964 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, barrel, hedgehog, and cholla cacti. Bouteloua aristidoides, Lehmann lovegrass, and threeawns dominant grasses. Ephedra mid-right and left, blue palo verde distant center. Many dead burroweed, but generally in better shape than most places. Cottontop and bush muhly under mesquite, burroweed and prickly pear. Ocotillo distant right. Compared to 2000, less grass, dead burroweed, dead cholla, and larger prickly pear. M. McClaran photographer, no assistant.

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280_2_2009_03 MAR 2009 2

Photo Archive No. 280.2.2009.03

PS. 280. 16 March 2009. Facing west, Azimuth 278. Pasture 3. Elevation 961 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, barrel, hedgehog, and cholla cacti. Bouteloua aristidoides and threeawns dominant grasses, with some cottontop (including plant in center, bottom foreground), Rothrock grama, bush muhly and Lehmann lovegrass. Ephedra mid-right and left, blue palo verde distant center. Cottontop and bush muhly under mesquite, burroweed and prickly pear. Ocotillo distant right. Compared to 2007, increase in small 10-25 cm tall burroweed plants, cactus have grow including cholla in far left foreground that is now blocking view of barrel cactus that is still alive as seen in 2007. M. McClaran photographer, A. Peterson assistant.

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280_2_2015_03 MAR 2015 2

Photo Archive No. 280.2.2015.03

PS. 280. 16 March 2015. 10:20 am. Facing west, Azimuth 278. Pasture 3. Elevation 961 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, little leaf baccharis, barrel, hedgehog, and cholla cacti. Bouteloua aristidoides and threeawns dominant grasses, with some cottontop (some plants flowering now), Rothrock grama, bush muhly and Lehmann lovegrass. Ephedra mid-right (flowering now) and left, blue palo verde distant center. Cottontop and bush muhly under mesquite, burroweed and prickly pear. Ocotillo distant right. Compared to 2009, increase in size and number of burroweed plants, cottontop in center died, prickly pear in front of ephedra died. M. McClaran photographer, K. Hawkes assistant.

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280_2_2021_03 MAR 2021 2

Photo Archive No. 280.2.2021.03

PS. 280. 08 March 2021. 10:35 am. Facing west, Azimuth 278. Pasture 3. Elevation 961 m. ISO 200, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, little leaf baccharis, barrel, hedgehog, and cholla cacti. Lehmann lovegrass and cottontop are dominant grasses; bush muhly and threeawns also present. Ephedra mid-right (flowering now) and left, blue palo verde distant center. Cottontop and bush muhly under mesquite, burroweed and prickly pear. Ocotillo distant right. Compared to 2015, absence of Boutleoua aristidoides following record dry summer 2020; decline in threeawns; increase in size of burroweed plants; decreas in size and number of prickly pear plants. M. McClaran photographer, A. Gorlier assistant.

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Last updated - December 2021
Mitchel McClaran - mcclaran@u.arizona.edu