PS. 270. 20 August 2024 3:30 PM. Facing southeast, Azimuth 141. Pasture 12B. Elevation 1011 m. ISO 125, 35mm focal length, Canon 5D Mark IV Digital Camera. Witness present, camera above witness. Species census in 40 m2 plot, starting 2 m from camera ending 8 m from camera, right and left boundaries follow the right and left edges of the camera view. The 25 species found in the plot were: Calliandra eriophylla, Eragrostis lehmanniana, Machaeranthera tagetina, Solanum elaeagnifolium, Talinum aurantiacum, Chenopodium fremontii, Portulaca suffrutescens, Abutilon spp., Ambrosia artemisiifolia, Aristida spp., Ayenia filiformis, Boerhavia coccinea, Chamaesyce florida, Digitaria californica, Eriogonum abertianum, Eriogonum wrightii, Gutierrezia sarothrae, Heteropogon contortus, Haplopappus tenuisectus, Janusia gracilis, Panicum hirticaule, Prosopis velutina, Salsola tragus, Setaria macrostachya, and Sida abutifolia.  M. McClaran photographer, A. Gorlier assistant.

PS. 270. 22 March 2025. 3:48 pm. Facing southeast, Azimuth 141. Pasture 12B. Elevation 1011 m. ISO 100, 35mm focal length, Canon 5D Mark IV Digital Camera.  Witness present, camera above witness. Framing in 2025 is slightly left of 2013 and 2019, and slightly forward of 2000. Location of 1948 is a few meters left of present location, so that the current mesquite at right margin is in the center of the 1948 image, and the framing of 1948 is lower. Mesquite alive. Catclaw acacia in distant right, snakeweed, Zinnia, some Calliandra scattered, in the distance a four-wing saltbush, and ocotillo. Grasses are threeawns, tanglehead, cottontop (under mesquite), and Setaria (under larger mesquite). Chollas distant left and right and in mesquite foreground far left, and large Opuntia at left margin foreground (these cacti were present in 2019).  Compared to 2019, larger snakeweed and cholla, more grass cover, added tanglehead, saltbush and ocotillo, lost Lehmann lovegrass.  M. McClaran photographer, A. Gorlier assistant.

PS. 270. 06 March 2019 2:32 pm. Facing south, Azimuth 195. Pasture 12B. Elevation 1011 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive, small mesquite at bottom foreground. Pima pineapple, barrel, cholla and prickly pear cacti. Snakeweed, burroweed and Calliandra common. Lehmann lovegrass, Bouteloua aristidoides, and tanglehead present. Cottontop, and bush muhly under larger mesquite. Acacia greggi and Zizyphus obtusifolia in right distant, and Celtis in bottom right margin. Compared to 2013, prickly pear larger, much more snakeweed and burrowed, slightly more grass, new Pima Pineapple, barrel and hedgehog cacti. M. McClaran photographer, A. Gorlier assistant.

PS. 270. 22 March 2025 3:54 pm. Facing south, Azimuth 195. Pasture 12B. Elevation 1011 m. ISO 100, 35mm focal length, Canon 5D Mark IV Digital Camera.  Witness present, camera above witness. Framing is a good match with 2000 through and 2019; higher, and wider and slightly left of 1948 through 1988. Mesquite alive. Snakeweed, burroweed, Calliandra Celtis, Ephedra, and Lycium shrubs are present. Barrel, cholla, hedgehog, and prickly pear cacti present. Cottontop, and bush muhly and Setaria both under larger mesquite. Compared to 2019, more grass cover, snakeweed plants are larger, cholla and prickly pear are larger, added Lycium Setaria, Celtis, and Ephedra, lost Pima pineapple, Acacia greggi, Zizyphus obtusifolia, Lehmann lovegrass, Bouteloua aristidoides, and tanglehead.  M. McClaran photographer, A. Gorlier assistant.