Table 10. Andropoqon scoparius - Agropyron spicatum Community Productivity 



(kq/ha) 



Ansc Aqsp Hemi Litter z Productivity 



1977 10? t 69 182 t 41 ^OB*- 38 946 ± 193 560 ± 78 



1978 128 ± 98 315 ± 101 513!: 99 438 t 148 1 1 52 i 155 



1979 104 + 102 268 ± 88 394± 102 774 i 194 902 t 143 



1980 26 t 26 132 t 50 261t 105* 1051 t 264 465 t 78 



* Mostly Muhlenberqia cuspidata , A ristida longiseta , and to a lesser extent 

 Stipa comata. 



Table 11. Aqropyron spicatum/Bouteloua qracil is - Carex fil ifol ia 



Community Productivity (kq/ha) 



Aqsp Boqr Cafi Hemi Cham* Litter z Productivity 



1977 116± 23 39+ 16 36± 1 1 44± 1 5 142± 71 727± 168 372± 45 



1978 51 7^ 133 SS^. 36 78i 22 365± 79 183+ 67 306± 76 1284t 95 



1979 596± 99 48+ 19 52± 1 1 86+ 38 96+ 33 520+ 78 866+ 132 



1980 143+ 56 74+ 52 30± 9 51± 34 1 34± 85.6 102U 342 441± 71 



* Biomass of Guiterrezia sarothrae. Phlox hoodii, and Certoides lanata. 



Table 12. Artemisia cana/Agropyron smithii/Bouteloua qracil is 



Community Productivity (kg/ha) 



Area Aqsm Boqr Hemi Litter E Productivity 



1977 398t 163 115+ 31 134+ 37 80± 33 753+ 262 800± 172 



1978 6021: 145 666+ 61 262+ 65 258± 82 633± 185 2024± 175 



1979 698+ 352 656+ 119 418+104 138 1752+ 615 1970+ 313 



1980 278+ 122 132± 47 321 ± 101 52 6929t 3621 763± 156 



