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_ RANGE SITE N0. 287 ~.a~t 2 <br />STONY FOOTHILLS <br />August 1975 ~ ~ <br />Native (potential) Vegetation and Guide for Determining Range <br />Condition. <br />Percentage composition by weight of the principal species may <br />total as much as: <br />.~ - <br />35 <br />i !~~ <br />,•._-. ?` <br />~~.: <br />Grasses and grasslike: <br />tfestern wheatgrass -l~i~-~ S <br />Bluebunch wheatgrass a~ "Y•'J <br />Galleta S -10 <br />Indian ricegrass- 5 - i0 <br />Needle-and-thread 5- i0 <br />• <br />Junegrass 5 • <br />Squirreltail 5 <br />Forbs: 5 <br />Shrubs: <br />Black and big sagebrush 15 <br />Fringed sagebrush 5 <br />Serviceberry 5 • <br />Rabbitbrush <br />Pinyon and Juniper 10 <br />Tree species native to this site are pinyon and juniper. Canopy <br />does not exceed 10 percent. <br />• Optimum ground cover is 2$ percent. <br />Invaders .of this site are gumweed, sleepy grass, and annual <br />plants. ,. <br />4. Total Annual' Production , <br />Favorable years 800 Pound per Acre Air Dry <br />Unfavorable years 400 " " " <br />Median years 600 " " <br />• <br />