7-48. A48-160. P.S. 256 first photo. Vicinity of quadrat E3. Quadrat markings show up in the distance toward the right side of the photo. Photo taken just off the Helvetia road and S. of road to Ruelas ranch that takes off just N. of Box Canyon. Looking E. Scant grass cover Ber, Agl, and others. Heavy Pve and cholla, some Cer. SRER. Culley. 10H(3)b.

T-230. 16 Apr 60. SRER, P.S. 256. 10H3b.

PS 256. Azimuth 124. Oct. 23, 1986. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Robert F. Buttery.

PS 256. April 14, 2000, 4:40 p.m., windy. Facing southeast. Azimuth 124. Pasture 2N. Plus X, 125 ASA film. 35mm lens focal length. Exposure = 1/500. Witness about 120' from road in a small mesquite (look for double white-topped fence posts close to road). Area burned in 1994. Photo taken 10' east of witness due to blocking mesquite. M. McClaran.

PS. 256. 9 March 2007. Facing southeast, Azimuth 124. Pasture 2N. Elevation 1142 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post in place, 30 m east of Road 486. Camera east of mesquite that is blocking view. Mesquite alive and re-sprouting from 1994 fire. Prickly pear, Calliandra, and burroweed present. Snakeweed at bottom left. Small blue paloverde in midground. Grasses are cottontop, Lehmann and Boer’s lovegrasses. Compared to 2000, much less grass mass in general. M. McClaran photographer, no assistant.

PS. 256. 14 March 2011. 11:30 AM. Facing southeast, Azimuth 115. Pasture 2N. Elevation 1126 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post in place, 30 m east of Road 486. Camera east of mesquite that is blocking view. Mesquite alive and re-sprouting from 1994 fire. Prickly pear, Calliandra, and burroweed present. Snakeweed at bottom left. Small blue paloverde in midground. Grasses are cottontop, Lehmann and Boer’s lovegrasses. Compared to 2007, more annual grass. M. McClaran photographer, A. Dalke assistant.

PS. 256. 13 March 2017. 11:32 AM. Facing southeast, Azimuth 115. Pasture 2N. Elevation 1126 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post in place, 30 m east of Road 486. Camera east of mesquite that is blocking view. Mesquite alive and re-sprouted from 1994 fire. Prickly pear, barrel cactus, Calliandra (flowering), cholla, littleleaf baccharis, and burroweed present. Snakeweed at bottom left. Small blue paloverde in midground. Grasses are cottontop, Lehmann and Boer’s lovegrasses. Compared to 2011, less annual grass and blue palo verde plant is spreading into left side of image. M. McClaran photographer, K. Hawkes assistant.

PS. 256. 06 March 2023. 12:05 PM. Facing southeast, Azimuth 115. Pasture 2N. Elevation 1126 m. ISO 125, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post in place, 30 m east of Road 486, but camera is a few meters east of mesquite that is blocking view. Mesquite alive and re-sprouted from 1994 fire. The large two-trunk mesquite present in 1948 image, is still present in the distant left. Prickly pear, barrel cactus, Calliandra, cholla, littleleaf baccharis, and burroweed present. Snakeweed at bottom left. Found four blue paloverde. Grasses are cottontop, Lehmann and Boer’s lovegrasses, tanglehead, and under mesquite bush muhly and Setaria; Lehmann lovegrass is dominant. Compared to 2017, large increase in perennial grass cover and mass, especially Lehmann lovegrass; added bush muhly, Setaria, and tanglehead grasses; decline in size of some prickly pear plants but increase for some others. M. McClaran photographer, A. Gorlier assistant.

7-48. A48-161. P.S. 256 first photo looking SE. Scant grass cover Agl, Ber, and others. Heavy Afr, cholla and pricklypear. SRER. Culley. 10H(3)b.

T-229. 16 Apr 60. SRER, P.S. 256. 10H3b.

PS 256. Azimuth 172. Oct. 23, 1986. RFB. Canon AE-1 camera (35mm). 35mm WA lens. Robert F. Buttery.

PS 256. April 14, 2000, 4:40 p.m., windy. Facing south. Azimuth 172. Pasture 2N. Plus X, 125 ASA film. 35mm lens focal length. Exposure = 1/500. Witness about 120' from road in a small mesquite (look for double white-topped fence posts close to road). Area burned in 1994. Photos taken 6' southeast of witness due to mesquite blocking view. Calliandra flowering; mesquite sprouted since fire. Some Haplopappus tenuisectus survived fire. Eragrostis lehmanniana dominant grass. Muhlenbergia porteri under large mesquites. M. McClaran.

PS. 256. 9 March 2007. Facing south, Azimuth 172. Pasture 2N. Elevation 1142 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post in place, 30 m east of Road 486. Camera south side of mesquite that is blocking view. Mesquite alive and re-sprouting from 1994 fire. Prickly pear, and Calliandra present. Ephedra distant center and Celtis distant right. Grasses are cottontop (numerous), Lehmann and bush muhly. Compared to 2000, much less grass mass in general, some prickly pear death, barrel cactus fallen over. M. McClaran photographer, no assistant.

PS. 256. 14 March 2011. 11:30 AM. Facing south, Azimuth 180. Pasture 2N. Elevation 1142 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post in place, 30 m east of Road 486. Camera south side of mesquite that is blocking view. Mesquite alive and re-sprouting from 1994 fire. Prickly pear, and Calliandra present. Ephedra distant center and Celtis distant right. Grasses are cottontop (numerous), Lehmann and bush muhly. Compared to 2007, more annual grass and more prickly pear, and fallen barrel cactus is now dead. M. McClaran photographer, A. Dalke assistant.

PS. 256. 13 March 2017. 11:14 AM. Facing south, Azimuth 180. Pasture 2N. Elevation 1142 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post in place, 30 m east of Road 486. Camera south side of mesquite that is blocking view. Mesquite alive and re-sprouted from 1994 fire. Prickly pear, littleleaf baccharis, and Calliandra (flowering) present. Ephedra distant center and Celtis distant right (that plant visible in 1948 photograph). Grasses are cottontop, Lehmann lovegrass, Setaria, threeawn, tanglehead and bush muhly. Compared to 2011, less annual grass. M. McClaran photographer, K. Hawkes assistant.

PS. 256. 06 March 2023. 12:15 PM. Facing south, Azimuth 180. Pasture 2N. Elevation 1142 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post in place, 30 m east of Road 486, but camera is a few meters south of the mesquite that is blocking view. Mesquite alive and re-sprouted from 1994 fire. The left foreground mesquite was present as a small plant in the 1948 image. Prickly pear, littleleaf baccharis, catclaw (behind center prickly pear), cholla, barrel cactus, Krameria, and Calliandra present. Ephedra distant center and Celtis distant right (that plant is visible in 1948 photograph). Grasses are cottontop, Lehmann lovegrass (dominant), Boer’s lovegrass, Setaria, tanglehead and bush muhly. Compared to 2017, large increase in perennial grass cover and mass, especially Lehmann lovegrass; added Krameria, catclaw, cholla, barrel cactus, and Boer’s lovegrass; and lost threeawn. M. McClaran photographer, A. Gorlier assistant.