Scientific Name: AGROPYRON SMITHII PA 

 Common Name: WESTERN WHEATGRASS ASSOCIATION 



Global rank: G4 Forest Service status: 

 State rank: S3 Federal Status: 



Element occurrence code: C5B2CBABA0 . 002 



Survey site name: HAHNKAMP ISLAND - CENTRAL 



EO rank: C 

 EO rank comments: INCREASER SPECIES ARE WELL-REPRESENTED 



AND SUGGEST HEAVY CATTLE USE IN THE 

 PAST. 



County: BEAVERHEAD 



USGS quadrangle: EARLS GULCH 



Township: 002S Range: 009W Section: 35 Precision: S 



Township-range comments: SW4SW4 



Survey date: 1991-08-21 Elevation: 5155 

 First observation: 1991 Slope/aspect: 1% / WEST 



Last observation: 1991-08-21 Size (acres) : 1 



Location: 



FROM MELROSE, PROCEED SOUTH 0.7 MILE ON THE FRONTAGE ROAD AND PARK. 

 FORD THE BIG HOLE RIVER TO THE ISLAND. THE PLOT IS NEAR THE CENTER OF 

 THE ISLAND, CA. 0.25 MILE TO THE SOUTHWEST. 



Element occurrence data: 



WITHIN PLOT, 2 6 SPECIES OBSERVED. DOMINANTS INCLUDE: AGROPYRON SMITHII 

 (60% CANOPY COVER), CAREX STENOPHYLLA (10%), KOELERIA CRISTATA (20%), 

 POA PRATENSIS (10%), AND EQUISETUM HYEMALE (30%). COMPLETE LIST ON 

 FILE AT MONTANA NATURAL HERITAGE PROGRAM. 



General site description: 



ALLUVIAL FLOOD PLAIN; PLOT POSITION IS FLOOD PLAIN IN WIDE VALLEY 

 BOTTOM. SANDY ALLUVIUM PARENT MATERIAL AND USTIC TORRIFLUVENT SOIL 

 SUBGROUP. GROUND COVER: BARE SOIL (10%), TOTAL COARSE FRAGMENTS (0%). 



Land owner/manager: 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments : 



MTNHP PLOT #91RD052. SURVEY CONDUCTED BY R. L. DEVELICE. NOTE: LAND 

 OWNERSHIP IS BLM, BUT MAY APPEAR AS PRIVATELY-OWNED LAND ON MAPS. 



Information source: 



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

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



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