Scientific Name: POPULUS TRICHOCARPA/CORNUS STOLONIFERA CT 

 Common Name: BLACK COTTONWOOD/RED-OSIER DOGWOOD COMMUNITY 



Global rank: G4 Forest Service status: 

 State rank: S4 Federal Status: 



Element occurrence code: C1B3DFACA0 . 003 



Survey site name: HAHNKAMP ISLAND SOUTH i^l 



EO rank: EC 

 EO rank comments: CATTLE APPEAR TO HAVE SIGNIFICANTLY 



DISTURBED SITE IN THE PAST. 



County : BEAVERHEAD 



USGS quadrangle: EARLS GULCH 



Township: 003S Range: 009W Section: 02 Precision: S 



Township-range comments: SE4NW4 



Survey date: 1991-08-19 Elevation: 5150 

 First observation: 1991 Slope/aspect: 0% / NORTH 



Last observation: 1991-08-19 Size (acres) : 2 



Location: 



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

 FORD THE BIG HOLE RIVER TO THE ISLAND. THE PLOT IS NEAR THE SOUTH END 

 OF THE ISLAND, CA. 0.8 MILE TO THE SOUTH. 



Element occurrence data: 



WITHIN PLOT, 21 SPECIES OBSERVED. DOMINANTS INCLUDE: POPULUS 

 TRICHOCARPA (70% CANOPY COVER) , JUNIPERUS SCOPULORUM (3%) , ROSA 

 ACICULARIS (80%), POA PALUSTRIS (20%), AND POA PRATENSIS (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. GRAVELLY ALLUVIUM PARENT MATERIAL AND TYPIC UDIFLUVENT SOIL 

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

 (TRACE) . 



Land owner/manager: 



BLM: BUTTE DISTRICT, DILLON RESOURCE AREA 



Comments : 



MTNHP PLOT #91RD047. SURVEY CONDUCTED BY R. L. DEVELICE. VEGETATION 

 COMPOSITION WITHIN THIS SITE IS VERY HETEROGENEOUS SPATIALLY. THIS 

 LIKELY REFLECTS THE PATTERN OF ALLUVIAL DISTURBANCES ACTIVE AT THE 

 SITE. NOTE: LAND OWNERSHIP IS BLM, EVEN THOUGH MAPS MAY SHOW AREA AS 

 PRIVATELY-OWNED . 



Information source: 



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

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



157 



