DISTRIBUTION AND OCCURRENCE
SPECIES: Carex filifolia | Threadleaf Sedge 



GENERAL DISTRIBUTION : 
Threadleaf sedge is distributed over much of the western prairies of
North America from the Yukon Territory south to Washington (east of the
Cascade Mountains), Oregon, northeastern Nevada, Utah, and New Mexico,
and east through the Rocky Mountains and onto the plains of Manitoba,
Nebraska, and Texas [11,12].


ECOSYSTEMS : 
   FRES15  Oak - hickory
   FRES17  Elm - ash - cottonwood
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES23  Fir - spruce
   FRES29  Sagebrush
   FRES34  Chaparral - mountain shrub
   FRES35  Pinyon - juniper
   FRES36  Mountain grasslands
   FRES37  Mountain meadows
   FRES38  Plains grasslands
   FRES39  Prairie


STATES : 
     AK  AZ  CA  CO  ID  KS  MN  MT  NE  NV
     NM  ND  OK  OR  SD  TX  UT  WA  WY  AB
     BC  MB  SK  YT


ADMINISTRATIVE UNITS : 
     AGFO  BADL  BIHO  BITH  BICA  CHCU
     CRMO  DENA  DETO  FOBO  GLAC  SCBL
     THRO  WICA  YELL


BLM PHYSIOGRAPHIC REGIONS : 
    4  Sierra Mountains
    5  Columbia Plateau
    8  Northern Rocky Mountains
    9  Middle Rocky Mountains
   10  Wyoming Basin
   11  Southern Rocky Mountains
   12  Colorado Plateau
   13  Rocky Mountain Piedmont
   14  Great Plains
   16  Upper Missouri Basin and Broken Lands


KUCHLER PLANT ASSOCIATIONS : 
   KO11  Western ponderosa forest
   KO12  Douglas-fir forest
   KO15  Western spruce - fir forest
   KO16  Eastern ponderosa forest
   KO17  Black Hills pine forest
   KO18  Pine - Douglas-fir forest
   KO20  Spruce - fir - Douglas-fir forest
   KO21  Southwestern spruce - fir forest
   KO23  Juniper - pinyon woodland
   KO37  Mountain-mahogany - oak scrub
   KO38  Great Basin sagebrush
   KO51  Wheatgrass - bluegrass
   KO55  Sagebrush steppe
   KO56  Wheatgrass - needlegrass shrubsteppe
   KO63  Foothills prairie
   KO64  Grama - needlegrass - wheatgrass
   KO65  Grama - buffalograss
   KO66  Wheatgrass - needlegrass
   KO67  Wheatgrass - bluestem - needlegrass
   KO68  Wheatgrass - grama - buffalograss
   KO70  Sandsage - bluestem prairie
   KO74  Bluestem prairie
   KO75  Nebraska Sandhills prairie
   KO81  Oak savanna
   KO98  Northern floodplain forest


SAF COVER TYPES : 
    42  Bur oak
   201  White spruce
   206  Engelmann spruce - subalpine fir
   210  Interior Douglas-fir
   216  Blue spruce
   238  Western juniper
   239  Pinyon - juniper
   243  Sierra Nevada mixed conifer
   251  White spruce - aspen
   256  California mixed subalpine


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Threadleaf sedge forms a climactic climax with needle-and-thread grass
(Stipa comata) in protected areas of Theodore Roosevelt National Park
(TRNP) [9].  Blue grama (Bouteloua gracilis) dominates unprotected
areas which have been heavily grazed.  Some consider the presence of
blue grama an indication of xeric soils [14], but the majority believe
that blue grama replaces threadleaf sedge as a result of overgrazing
[3,8,9,36].  An edaphic climax of wheatgrass (Agropyron spp.)/sedge
(Carex spp.) also occurs in Theodore Roosevelt National Park.

Following is a list of habitat type (hts) and community type (cts)
publications in which threadleaf sedge is listed as a dominant or
subdominant.

Analysis of grassland vegetation on selected key areas in southwestern
  north Dakota [33].
Grassland and shrubland habitat types of western Montana [18].
Range plant communities of the Central Grasslands Research Station in
  south central North Dakota [15].
The vegetation of the Grand River/Cedar River, Sioux, and Ashland
  Districts of the Custer National Forest: a habitat type classification [9].

Related categories for Species: Carex filifolia | Threadleaf Sedge