PS. 132. 11 August 1937. Past. 3. Plot 108b. Mesquite and burroweed cut and scattered winter of 1936-1937. Cactus left standing. An excellent stand of annual grasses with a few perennials. View from SW corner looking to NE. Perm No. 357823. C-108.

PS. 132. June 1948. Repeat photo of C108 area 108B. Pve grubbed and brush scattered in Spring 1937. Afr has come in heavily, cholla has increased somewhat. Grass density has increased. Agl, Bro, Tca, and others. w/k2 filter. Culley photographer.

PS. 132. 11 April 2003. Facing northeast. Film ASA 100 Plus X, 35mm focal length, Olympus OM-1 Camera. Negatives 8-10. All visible mesquite leaves are from 2002. Dominant grass is Lehmann lovegrass, some bush muhly under mesquite, some threeawns in open areas. Shrubs are snakeweed and burroweed. M. McClaran photographer, S. McClaran assistant.

PS. 132. 12 March 2007. Facing eastnortheast, Azimuth 75. Pasture 3. Elevation 1010 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, and cholla cacti. Celtis far left background. Cottontop tall grass in prickly pear and beneath mesquite, and scattered in open areas. Burroweed struggling and many dead. Setaria beneath large mesquite center midground, with some bush muhly. Bouteloua aristidoides common in open, with some bush muhly. Pulled 3 buffelgrass in area, no others found. Compared to 2003, much less grass. M. McClaran photographer, no assistant.

PS. 132. 15 March 2011. 12:40 PM. Facing east-northeast, Azimuth 80. Pasture 3. Elevation 980 m. ISO 100, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, and cholla cacti. Cottontop and Lehmann lovegrass in prickly pear, cottontop beneath mesquite, and scattered in open areas. Setaria beneath large mesquite center midground, with some bush muhly. Bouteloua aristidoides common in open. One buffelgrass to right of photo, no others found. Compared to 2007, many small burroweed plant and prickly pear condition has declined. M. McClaran photographer, A. Dalke assistant.

PS. 132. 15 March 2017. 1:45 PM. Facing east-northeast, Azimuth 90. Pasture 3. Elevation 980 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Prickly pear, and cholla cacti. Celtis present. Cottontop and Lehmann lovegrass in prickly pear; cottontop and threeawn beneath mesquite, and scattered in open areas. Setaria and bush muhly under large mesquite center midground. Since 2011, less annual grass and increase of perennial threeawn; prickly pear mass and density decline; burroweed arrival, buffelgrass present is 2011 is not present. M. McClaran photographer, K. Hawkes assistant.

PS. 132. 07 March 2023. 4:15 PM. Facing east-northeast, Azimuth 90. Pasture 3. Elevation 980 m. ISO 250, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Celtis present in midground far left. Prickly pear, and cholla cacti. Cottontop, Lehmann lovegrass and buffelgrass present in open areas; cottontop and threeawn beneath mesquite, and scattered in open areas. Setaria under large mesquite center midground, and bush muhly under mesquite at left midground. Compared to 2017, explosion of perennial grass and realization that water runoff collects in this area; return of buffelgrass that was found in 2011 but not found in 2017; increase in size of burroweed plants; continued decrease in prickly pear density; and threeawn plants are no longer present. M. McClaran photographer, A. Gorlier assistant.

PS. 132. 31 March 1937. Mesquite and burroweed cleared areas near Encl. No. 20. In Past. No. 3. General view of the cleared area, showing cactus in the foreground and a few scattered clumps of Ad may be recognized in the immediate foreground. Soil is loose and sandy and should erode easily under cleared condition. Perm No. C-6.

PS. 132. June 1948. Repeat photo of C6 area 108. Area cleared of Pve and Afr in apring 1937. Afr has come in heavily, cholla has increased, grass density has increased but is still low. Agl, Bro, Tca, and others. w/o filter. Photographer Culley. A48-99.

PS. 132. 15 April 1960. 10H3b.

PS. 132. 12 March 2007. Facing southeast, Azimuth 145. Pasture 3. Elevation 1010 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Cholla in foreground is dead, but hedgehog is alive. Prickly pear, barrel and cholla cacti. Burroweed struggling and many dead. Some struggling snakeweed. Setaria beneath large mesquite center midground, with some bush muhly. Bouteloua aristidoides common in open. Threeawns, Lehmann lovegrass, Setaria present. Bush muhly and cottontop under mesquite. Pulled 3 buffelgrass in area, no others found. Compared to 2003, much less grass. M. McClaran photographer, no assistant.

PS. 132. 15 March 2011. 12:50 PM. Facing southeast, Azimuth 150. Pasture 3. Elevation 980 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Hedgehog at bottom right is dead. Prickly pear, barrel and cholla cacti. Cottontop and Setaria beneath large mesquite center midground, with some bush muhly. Threeawns and Lehmann lovegrass under prickly pear. One buffelgrass to right of photo, no others found. Compared to 2007, less annual grass, perennial grass appears less because recent (last month) grazing defoliated nearly all plants, several small cholla in foreground, and only a few new small burroweed and snakeweed plants. M. McClaran photographer, A. Dalke assistant.

PS. 132. 15 March 2017. 1:50 PM. Facing southeast, Azimuth 150. Pasture 3. Elevation 980 m. ISO 160, 35mm focal length, Canon 5D Digital Camera. Witness post present, camera above. Mesquite alive. Snakeweed and burroweed present. Prickly pear, barrel and cholla cacti. Cottontop and bush muhly under large mesquite center midground. Cottontop under prickly pear. Threeawn in open areas. Since 2011, less annual grass; buffelgrass gone; 3 barrel cacti died; snakeweed and burroweed plants arrive; cholla plants grew larger; and hedgehog died beneath mesquite right foreground. M. McClaran photographer, K. Hawkes assistant.

PS. 132. 07 March 2023. 4:17 PM. Facing southeast, Azimuth 150. Pasture 3. Elevation 980 m. ISO 250, 35mm focal length, Canon 5D Mark II Digital Camera. Witness post present, camera above. Mesquite alive. Snakeweed and burroweed present. Prickly pear and cholla cacti. Cottontop under large mesquite center midground. Cottontop under prickly pear. Rothrock grama in open areas. Compared to 2017, explosion of perennial grass and realization that water runoff collects in this area; return of buffelgrass that was found in 2011 but not found in 2017; increase in size of burroweed and snakeweed plants; increase in annual grass density and mass; decrease in prickly pear density; and threeawn plants are no longer present. M. McClaran photographer, A. Gorlier assistant.