Scientific Name: ARTEMISIA TRIDENTATA/AGROPYRON SPICATUM PA 

 Common Name: BIG SAGEBUSH/BLUEBUNCH WHEATGRASS ASSOCIATION 



Global rank: G5 

 State rank: S5 



Forest Service status; 

 Federal Status; 



Element occurrence code: C3A2BCACA0 . 020 



Survey site name: HOGBACK SODAK MINE ROAD 



EO rank: BC 

 EO rank comments: SURROUNDED BY HEAVILY-GRAZED GRASSLANDS. 



CATTLE USE HAS APPARENTLY DEGRADED SITE, 



County: BEAVERHEAD 



USGS quadrangle: BLOCK MOUNTAIN 



Township: 005S Range: 008W Section: 09 

 Township-range comments: SW4SE4 



Precision: 



Survey date: 



First observation: 



Last observation: 



1991-06-05 



1991 



1991-06-05 



Elevation: 5320 



Slope/aspect: 18% / NORTHWEST 



Size (acres) : 1 



Location: 



FROM GLEN, PROCEED SOUTH ON PAVEMENT 7.4 MILES TO GRAVEL CROSSROAD. 

 TAKE THIS GRAVEL ROAD 0.6 MILE EAST TO AN INTERSECTION WITH A SIDE 

 ROAD. TAKE THIS SIDE ROAD 2.3 MILES NORTH AND PARK. PLOT IS ON UPPER 

 SLOPE OF RIDGE, 0.75 MILE DUE EAST. 



Element occurrence data: 



WITHIN PLOT, 23 SPECIES OBSERVED. DOMINANTS INCLUDE: ARTEMISIA 

 TRIDENTATA (10% CANOPY COVER), ARTEMISIA FRIGIDA (10%), AGROPYRON 

 SPICATUM (20%), BOUTELOUA GRACILIS (30%), AND STIPA COMATA (20%). 

 COMPLETE LIST ON FILE AT MONTANA NATURAL HERITAGE PROGRAM. 



General site description: 



STRUCTURALLY CONTROLLED MOUNTAIN SLOPE; PLOT POSITION IS UPPER SLOPE, 

 QUARTZITE PARENT MATERIAL AND BOROLLIC LITHIC CALCIORTHID SOIL 

 SUBGROUP. GROUND COVER: BARE SOIL (1%), TOTAL COARSE FRAGMENTS (40%), 



Land owner/manager: 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments : 



MTNHP PLOT #91RD009, 

 McALPINE. 



SURVEY CONDUCTED BY R, 



DEVELICE AND A, 



Information source: 



DEVELICE, ROBERT L. [COMMUNITY ECOLOGIST] . MONTANA NATURAL HERITAGE 

 PROGRAM, 1515 E. 6TH AVE., HELENA, MT 59620. 



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