scientific Name: ARTEMISIA TRIDENTATA/FESTUCA IDAHOENSIS PA 

 Common Name: BIG SAGEBRUSH/ IDAHO FESCUE ASSOCIATION 



Global rank: G5 Forest Service status: 

 State rank: S4 Federal Status: 



Element occurrence code: C5B2BGABA0 . 014 



Survey site name: ELK GULCH MINE SOUTH 

 EO rank: EC 



EO rank comments: CATTLE APPEAR TO HAVE HEAVILY GRAZED 



AREA IN THE PAST, BUT APPARENTLY HAVE 

 NOT BEEN PRESENT ON SITE FOR AT LEAST 

 TWO YEARS. 



County: BEAVERHEAD 



USGS quadrangle: ELK GULCH 



Township: 009S Range: 007W Section: 02 Precision: S 



Township-range comments: NE4SW4 



Survey date: 1991-07-11 Elevation: 7500 

 First observation: 1991 Slope/aspect: 30% / SOUTHEAST 



Last observation: 1991-07-11 Size (acres) : 1 



Location: 



FROM THE CEMETERY IN DILLON (1 MILE EAST OF TOWN) , PROCEED ON GRAVEL 

 SWEETWATER ROAD 14 MILES EAST TO A DIRT ROAD AND GATE ON SOUTH SIDE OF 

 SWEETWATER ROAD. GO THROUGH GATE AND FOLLOW DIRT ROAD 6.5 MILES TO A 

 JEEP TRAIL ON A FORESTED RIDGE. TAKE THIS TRAIL 0.4 MILE SOUTH AND 

 PARK. PLOT IS CA. 0.2 MILE DUE SOUTH. 



Element occurrence data: 



WITHIN PLOT, 31 SPECIES OBSERVED. DOMINANTS INCLUDE: ARTEMISIA 

 TRIDENTATA (10% CANOPY COVER) , AGROPYRON SPICATUM (20%) , FESTUCA 

 IDAHOENSIS (20%), POA SANDBERGII (3%), AND HAPLOPAPPUS ACAULIS (20%). 

 COMPLETE LIST ON FILE AT MONTANA NATURAL HERITAGE PROGRAM. 



General site description: 



RESIDUAL MOUNTAIN SLOPE; PLOT POSITION IS MID-SLOPE. PERIDOTITE PARENT 

 MATERIAL AND LITHIC ARGIBOROLL SOIL SUBGROUP. GROUND COVER: BARE SOIL 

 (30%) , TOTAL COARSE FRAGMENTS (30%) . 



Land owner/manager: 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments: 



MTNHP PLOT #91RD032. SURVEY CONDUCTED BY R. L. DEVELICE. SITE MAPPED 

 IN 1970 AS HAVING GREATER THAN 1000 PPM NICKEL CONTENT (MAP COMPILED 

 BY K. STOUT, BUTTE) . THE RELATIVE SPARSENESS OF THE VEGETATION 

 RELATIVE TO ADJACENT SITES (E.G., PLOT #91RD033, WITH 100-400 PPM 

 NICKEL) MAY REFLECT THESE HIGH NICKEL VALUES. 



Information source: 



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

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



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