PS. 134. 31 March 1937. Mesquite and burroweed cleared area near Encl. No. 20 in Past. No. 3. General view looking south down the E boundary of the cleared area. Left half is quite typical of the cleared area prior to the grubbing of mesquite and burroweeds. There is a small amount of Rg and Ad showing on both the cleared and untreated areas. Perm. No. C-8.

PS. 134. June 1948. Repeat photo of C8 area 108. South along E. side of 108A. Afr heavy stand on formerly cleared plot and note increase of Pve on area to the left. Cholla has shown a big increase. Agl, Bro in low density. Photographer Culley.

PS. 134. 15 April 1960. 10H3b.

PS. 134. 11 April 2003. Facing south. Film ASA 100 Plus X, 35mm focal length, Olympus OM-1 Camera. Negatives 19, 20. Mesquite were cut from left side of image in 1935. All visible mesquite leaves are from 2002. Dominant grass is Lehmann lovegrass. Shrubs are snakeweed and burroweed. M. McClaran photographer, S. McClaran assistant.

PS. 134. 12 March 2007. Facing south, Azimuth 180. Pasture 3. Elevation 1006 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and barrel cacti under/behind foreground mesquite. Bouteloua aristidoides and Lehmann lovegrass numerous. Larger grasses in open, beneath mesquite and under prickly pear are cottontop and Setaria. Bush muhly under mesquite. Dead burroweed numerous. Compared to 2000, slightly less grass mass, and much less burroweed. M. McClaran photographer, no assistant.

PS. 134. 15 March 2011. 11:10 AM. Facing southwest, Azimuth 225. Pasture 3. Elevation 1003 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and barrel cacti present. Lehmann lovegrass, cottontop, and bush muhly and threeawns plant beneath prickly pear plants. Larger grasses in open, beneath mesquite and under prickly pear are cottontop and Setaria. Bush muhly under mesquite. Large mesquite in foreground is visible as small plant in 1937 and 1948 photos. Very large mesquite in distance, that is visible in 1937 and 1948 photos, is now dead and has been for some time, u this is not visible from photo station. Celtis plants surround the mesquite skeleton. Compared to 2007, no Setaria present, dead barrel cactus in center mid-distance, some scattered small burroweed plants, perennial grass not much different but appears less abundant because recent grazing (last month) defoliated all plants. M. McClaran photographer, A. Dalke assistant.

PS. 134. 15 March 2017. 11:30 AM. Facing southwest, Azimuth 225. Pasture 3. Elevation 1003 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and barrel cacti present. Cottontop, and bush muhly and threeawns plant beneath prickly pear plants. Larger grasses in open, beneath mesquite are cottontop, Setaria, and bush muhly. Large mesquite in foreground is visible as small plant in 1937 and 1948 photos. Very large mesquite in distance, that is visible in 1937 and 1948 photos, is now dead and has been for some time, however this is not visible from photo station. Celtis plants surround that old mesquite skeleton. Compared to 2011, no longer Lehmann lovegrass; less annual grass; less prickly pear (largest plant died); 2 dead barrel cacti; added some burroweed plants in the distance. M. McClaran photographer, K. Hawkes assistant.

PS. 134. 07 March 2023. 1:30 PM. Facing southwest, Azimuth 225. Pasture 3. Elevation 1003 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear and Celtis present. Cottontop, Lehmann lovegrass, and Setaria plants beneath prickly pear plants. Larger grasses in open, beneath mesquite are cottontop, Setaria, and bush muhly. Large mesquite in foreground is visible as small plant in 1937 and 1948 photos. Very large mesquite in distance, that is visible in 1937 and 1948 photos, is now dead and has been for some time, however this is not visible from photo station. Celtis plants surround that old mesquite skeleton. Compared to 2017, Lehmann lovegrass returned after absence in 2017; more cottontop; lost threeawns and bush muhly; more annual grass; many more burroweed and snakeweed plants; less prickly pear (largest plant died); cholla increase in size; dead barrel cactus beneath foreground left mesquite. M. McClaran photographer, A. Gorlier assistant.

PS. 134. 31 March 1937. Mesquite and burroweed cleared area near Encl. No. 20 in Past. No. 3. General view of cleared area looking SW from NE corner of cleared area. Only a few clumps of grass left. Cholla cactus in foreground and scattered over entire area. Compare C-8, C109. Perm. No. C-9.

PS. 134. 15 April 1960. 10H3b.

PS. 134. 11 April 2003. Facing southsouthwest. Film ASA 100 Plus X, 35mm focal length, Olympus OM-1 Camera. Negatives 21-23. Mesquite were cut in 1936-7. All visible mesquite leaves are from 2002. Dominant grass is Lehmann lovegrass. Shrubs are snakeweed and burroweed. M. McClaran photographer, S. McClaran assistant.

PS. 134. 12 March 2007. Facing southwest, Azimuth 220. Pasture 3. Elevation 1006 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Some dead burroweed. Snakeweed in poor shape. Prickly pear, barrel, and cholla cacti. Bouteloua aristidoides and some Lehmann lovegrass. Cottontop and bush muhly under mesquite. Compared to 2000, less grass mass, and less burroweed. M. McClaran photographer, no assistant.

PS. 134. 15 March 2011. 11:00 AM. Facing southwest, Azimuth 260. Pasture 3. Elevation 1003 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, barrel, and cholla cacti. Bouteloua aristidoides and some Lehmann lovegrass. Cottontop and bush muhly under mesquite, and Lehmann lovegrass under prickly pear. Compared to 2007, all barrel cacti in view are dead, prickly pear in poor condition, perennial grass abundance not much different but appears less because almost all plants were defoliated by recent (last month) grazing. M. McClaran photographer, A. Dalke assistant.

PS. 134. 15 March 2017. 11:25 AM. Facing southwest, Azimuth 260. Pasture 3. Elevation 1003 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Snakeweed and prickly pear and cholla cacti present. Cottontop, Setaria, and bush muhly under mesquite. Compared to 2011, less annual grass; less prickly pear and cholla and lost barrel cactus. M. McClaran photographer, K. Hawkes assistant.

PS. 134. 07 March 2023. 1:45 PM. Facing southwest, Azimuth 260. Pasture 3. Elevation 1003 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Snakeweed and prickly pear and cholla cacti present. Cottontop and Setaria under mesquite. Compared to 2017, there is more cottontop and annual grasses; lost bush muhly; many more burroweed and snakeweed density and mass; less prickly pear (large plants died); and cholla increase in size and density. M. McClaran photographer, A. Gorlier assistant.