A49-178. 521671. PS 228. 1903. Hay mowing.

A-1942. 1942. Photo Sta. No. 228. Retake of Photo No. 6913.

B-51-30. 1951. SRER. #228.

T-183. 23 Mar 1960, SRER, P.S. 228. 10H3b.

M-919. 3/18/64. PS 228. Repeat of #6913. WO - F521669.

M1251. SRER #228. 6-19-75.

PS 228. Azimuth 84. March 21, 1984. RFB. Honeywell Pentax 35mm camera. 35mm WA lens. Kodak FX 135 film. f:8-11 1/125 10'. 2:00 P.M. Robert F. Buttery.

PS 228. March 23, 1990. Facing east. Azimuth 84. M. McClaran.

PS 228. September 1993. Facing east. Azimuth 84. Same view as 1990 photo. M. McClaran. Color print also available in archive.

PS 228. November 2, 2000, 3:00 p.m. Facing east. Azimuth 84. Pasture 2N. 100 ASA TMAX film. 35mm lens focal length. This PS is about 450 steps south of Road 486. Taken at fence post, but mesquite blocks view. Mainly Eragrostis lehmanniana; some Digitaria californica, especially under mesquite. Some burroweed; some Muhlenbergia porteri under mesquite. M. McClaran.

PS. 228. 23 March 2007. Facing east, Azimuth 84. Pasture 2N. Elevation 1132 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera above witness. Mesquite alive. Small mesquite growing to block view. Barrel cactus, cottontop and Setaria beneath that small mesquite. Cloudy conditions and light rain. Compared to 2000, less grass and burroweed now. M. McClaran photographer, no assistant.

PS. 228. 17 March 2009. Facing east, Azimuth 84. Pasture 2N. Elevation 1132 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera above witness. Mesquite alive. Small mesquite growing to block view. Barrel cactus, cottontop and Setaria beneath that small mesquite. Compared to 2007, stem girdling on mesquite branches and some stem branch growth as well. M. McClaran photographer, A. Peterson assistant.

PS. 228. 18 March 2015. 2:12 pm. Facing east, Azimuth 84. Pasture 2N. Elevation 1132 m. ISO 400, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive, and leaves emerging. Small mesquite growing to block view. Cottontop and Setaria beneath that small mesquite. Compared to 2009, stem girdling on mesquite branches and some stem branch growth as well. M. McClaran photographer, K. Hawkes assistant.

PS. 228. 12 March 2021. 3:15 pm. Facing east, Azimuth 84. Pasture 2N. Elevation 1132 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera above witness. Mesquite alive. Small mesquite growing to block view. Cottontop and Setaria beneath that small mesquite. Barrel cactus present. Compared to 2015, stem girdling on mesquite branches and some stem branch growth as well, and the mesquite is larger. M. McClaran photographer, A. Gorlier assistant.

PS 228. September 1993. Facing east. Azimuth 84. Off-set to right of view in 1990 photo. M. McClaran. Color print also available in archive.

PS 228. November 2, 2000, 3:10 p.m. Facing east. Azimuth 84. Pasture 2N. 100 ASA TMAX film. 35mm lens focal length. This PS is about 450 steps south of Road 486. Taken in front of mesquite that blocks view from fence post. Fence post about 1.25 meters tall. M. McClaran.

PS. 228. 23 March 2007. Facing east, Azimuth 84. Pasture 2N. Elevation 1132 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera 2 m east of witness for open view away from small mesquite. Mesquite alive, more than 50% of burroweed is dead. Prickly pear, cholla and barrel cacti. One little leaf Baccharis. Small Lehmann lovegrass dominate open areas with Bouteloua aristidoides cottontop and bush muhly. Under larger mesquites, find cottontop, bush muhly and Setaria. Cloudy conditions and light rain. Compared to 2000, less grass and burroweed, more prickly pear now. M. McClaran photographer, no assistant.

PS. 228. 17 March 2009. Facing east, Azimuth 84. Pasture 2N. Elevation 1131 m. ISO 100, 35mm focal length, Canon 5D Digital Camera. Witness present, camera 4 m east of witness for open view away from small mesquite. Mesquite alive. Prickly pear, cholla and barrel cacti. Lehmann lovegrass common with Bouteloua aristidoides, cottontop and bush muhly. Under larger mesquites, find cottontop, bush muhly and Setaria. Compared to 2007, no little leaf Baccharis present now, increase in large threeawns and cottontop; small live burroweed plant at bottom center of this photo; and extensive stem girdling on mesquite. M. McClaran photographer, A. Peterson assistant.

PS. 228. 18 March 2015. 2:18 pm. Facing east, Azimuth 84. Pasture 2N. Elevation 1131 m. ISO 400, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera 4 m east of witness for open view away from small mesquite. Mesquite alive, and leaves emerging. Prickly pear, cholla and barrel cacti. Lehmann lovegrass present, also find cottontop, threeawn and bush muhly. Under larger mesquites, find cottontop, bush muhly and Setaria. Compared to 2009, increase in prickly pear and decrease in Lehmann lovegrass. M. McClaran photographer, K. Hawkes assistant.

PS. 228. 12 March 2021. 3:23 pm. Facing east, Azimuth 84. Pasture 2N. Elevation 1131 m. ISO 160, 35mm focal length, Canon 5D Mark II Digital Camera. Witness present, camera 4 m east of witness for open view away from small mesquite. Mesquite alive. Prickly pear, cholla and barrel cacti. Lehmann lovegrass present, also find cottontop, threeawn and bush muhly. Under larger mesquites, find cottontop, bush muhly and Setaria. Compared to 2015, increase in number and size of prickly pear and cholla; increase in cottontop number and size; and new barrel cacti under midground mesquite. M. McClaran photographer, A. Gorlier assistant.