A48-239. Photo station 283, pasture #3, looking north. Scattered bunches Mpo and Tca. Fair growth Mpo and poor growth on Tca. Moderate cover annual grass. Some ragweed. All dry now.

T-226. 16 Apr. 60. SRER, P.S. 283. 10H3b.

PS 283. Azimuth 27. Nov. 7, 1984. RFB. Honeywell Pentax camera (35mm). 35mm WA lens. f:8-11 1/125 20'. 1:40 P.M. Robert F. Buttery.

PS 283. Az 27. Feb. 10, 1988. RFB. Canon AE-1 camera. 35mm WA lens. f:8 1/125 Inf. 3:50 P.M. Robert F. Buttery.

PS 283. April 3, 2000, 4:40 p.m. Facing northeast. Azimuth 27. Pasture 3. Plus X, 125 ASA film. 35mm lens focal length. Witness present and marked; no paint; about 20' off road (W). Mesquite alive. Setaria macrostachya, Digitaria californica, Haplopappus tenuisectus, Muhlenbergia porteri, Sporobolus cryptandrus, beeplant; a few Eragrostis lehmanniana; several Cercidium floridum; abundant annual grama (Bouteloua aristidoides). M. McClaran.

PS. 283. 13 March 2007. Facing northeast, Azimuth 27. Pasture 3. Elevation 1028 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above witness. Looking through small mesquite. Mesquite alive. Looking through mesquite. Mesquite midground center, blue palo verde behind. Blue palo verde left foreground. Tall grass in open is Sporobolus cryptandrus. Unknown Asteraceae small shrub same as PS 281. Zinnia present. Many dead burroweed. Not sure this is exact match for 1948 photo. Bush muhly and cottontop in open and under shrubs and cacti. Compared to 2000, less grass, dead burroweed, and larger prickly pear. M. McClaran photographer, no assistant.

PS. 283. 16 March 2009. Facing northeast, Azimuth 27. Pasture 3. Elevation 1032 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present ~20 m north of road, camera above witness. Looking through small mesquite. Mesquite alive. Mesquite midground center has extensive stem-girdle damage. Blue palo verde left foreground. Tall grass in midground is Sporobolus cryptandrus. Encelia frutescens present. Zinnia present. Bush muhly and cottontop in open and under shrubs and cacti. View shifted a few degrees to west (left) since 1948. The large mesquite in 1948 at far right is now dead and skeleton on the ground. In the far distant left, the large mesquite present in 1948 is still alive, but the palo verde is dead with skeleton on the ground. Tree established since 1948 have grown quickly. Compared to 2007, Bouteloua aristidoides more common, plains bristlegrass under mesquite, Chloris under foreground mesquite, more tanglehead at base of barrel cactus in far left midground, and small burroweed plant in foreground slight left of center. M. McClaran photographer, A. Peterson assistant.

PS. 283. 16 March 2015. 12:06 pm. Facing northeast, Azimuth 27. Pasture 3. Elevation 1032 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present ~20 m north of road, camera above witness. Looking through small mesquite. Mesquite alive, joined by Encelia frutescens and Zinnia. Mesquite midground center has blue palo verde behind that was not present in 1948 photo. Blue palo verde left foreground, and flower buds present. Bush muhly and cottontop in open and under shrubs and cacti. View shifted a few degrees to west (left) since 1948. The large mesquite in 1948 at far right is now dead and skeleton on the ground. In the far distant left, the large mesquite present in 1948 is still alive, but the palo verde is dead with skeleton on the ground. Trees established since 1948 have grown quickly. Compared to 2009, Sporobolus in midground is dead, Bouteloua aristidoides less common. M. McClaran photographer, K. Hawkes assistant.

PS. 283. 08 March 2021. 1:22 pm. Facing northeast, Azimuth 27. Pasture 3. Elevation 1032 m. ISO 200, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present ~20 m north of road. Camera is now placed about 5 m north of Witness to provide a better view of the vegetation that is now blocked by young mesquite near the Witness. View shifted a few degrees to west (left) since 1948. Mesquite alive, joined by Encelia frutescens, burroweed, and Zinnia. Mesquite midground center has blue palo verde behind that was not present in 1948 photo. Bush muhly and cottontop in open and under shrubs and cacti. The large mesquite in 1948 at far right is now dead and skeleton is no longer present. In the far distant left, the large mesquite present in 1948 is still alive, but the palo verde is dead with skeleton on the ground. Trees established since 1948 have grown quickly. Compared to 2015, Bouteloua aristidoides is absent and poor condition of shrubs and cacti, including fewer prickly pear plants are indications of the record low precipitation in summer 2020. M. McClaran photographer, A. Gorlier assistant.

A48-238. Photo station 283, pasture #3, looking west. Scattered bunches Mpo and Tca. Fair growth Mpo and poor growth on Tca. Moderate cover annual grass. Some ragweed. All dry now.

T-227. 16 Apr. 60. SRER, P.S. 283. 10H3b.

PS 283. Azimuth 306. Nov. 7, 1984. RFB. Honeywell Pentax camera (35mm). 35mm WA lens. f:8 1/125 20'. 1:30 P.M. Robert F. Buttery.

PS 283. Az 306. Feb. 10, 1988. RFB. Canon AE-1 camera. 35mm WA lens. f:5.6 1/125 Inf. 3:55 P.M. Robert F. Buttery.

PS 283. April 3, 2000, 4:40 p.m. Facing northwest. Azimuth 306. Pasture 3. Plus X, 125 ASA film. 35mm lens focal length. Witness present and marked; no paint; about 20' off road (W). Digitaria californica, Setaria macrostachya under trees; Sporobolus cryptandrus; mesquite alive. Ephedra trifurca under mesquite in mid-ground; abundant annual grama (Bouteloua aristidoides); Muhlenbergia porteri. M. McClaran.

PS. 283. 13 March 2007. Facing northwest, Azimuth 306. Pasture 3. Elevation 1028 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above witness at 1.1 m height. Looking through blue palo verde and cholla. Mesquite alive at right with barrel cactus and Ephedra beneath. Prickly pear present. Blue palo verde left midground. Tall grass in right midground is Sporobolus cryptandrus. One dead burroweed. Cottontop, bush muhly, and Chloris under palo verde. Not sure this is exact match for 1948 photo. Compared to 2000, dead burroweed, and larger prickly pear. M. McClaran photographer, no assistant.

PS. 283. 16 March 2009. Facing northwest, Azimuth 306. Pasture 3. Elevation 1032 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present ~20 m north of road, camera above witness at 1.1 m height. Looking through blue palo verde and cholla. Mesquite alive at right with barrel cactus and Ephedra beneath. Prickly pear present. Blue palo verde left midground. Tall grass in right midground is Sporobolus cryptandrus. Cottontop, bush muhly, and Chloris under palo verde. Relative to 1948 photo, the view has shifted a few degrees to the north. The large palo verde in center of 1948 photo is still alive, but part of it is dead and on the ground. Compared to 2007, more Bouteloua aristidoides and cottontop, and increase size of cholla and prickly pear cacti. M. McClaran photographer, A. Peterson assistant.

PS. 283. 16 March 2015. 12:09 pm. Facing northwest, Azimuth 306. Pasture 3. Elevation 1032 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present ~20 m north of road, camera above witness at 1.1 m height. Looking through blue palo verde and cholla. Mesquite alive at right, Ephedra beneath and with barrel cactus that fell over since 2009. Prickly pear present. Blue palo verde left midground. Tall grass in right midground is Sporobolus cryptandrus. Cottontop, bush muhly, and Chloris under palo verde. Relative to 1948 photo, the view has shifted a few degrees to the north. The large palo verde in center of 1948 photo is still alive, but part of it is dead and on the ground. Compared to 2009, Bouteloua aristidoides less common, Sporobolus is smaller, less cottontop, and prickly pear in far right is nearly dead. M. McClaran photographer, K. Hawkes assistant.

PS. 283. 08 March 2021. 1:16 pm. Facing northwest, Azimuth 306. Pasture 3. Elevation 1032 m. ISO 200, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present ~20 m north of road, camera above witness at 1.1 m height. Relative to 1948 photo, the view has shifted a few degrees to the north Looking through blue palo verde. Mesquite alive at right, with Ephedra beneath. Prickly pear present. Blue palo verde left midground. Cottontop and bush muhly under palo verde. The large palo verde in center of 1948 photo is still alive, but part of it is dead and on the ground. Compared to 2015, Bouteloua aristidoides Sporobolus and Chloris are missing, and many plants are in poor condition following the record dry precipitation in summer 2020; and decrease in number of prickly pear plants. M. McClaran photographer, A. Gorlier assistant.