DISTRIBUTION AND OCCURRENCE
SPECIES: Juniperus horizontalis | Creeping Juniper 



GENERAL DISTRIBUTION : 
Creeping juniper is widely distributed across Canada from the Atlantic
to the Pacific Coast [7].  It is particularly widespread in North
America near the northern limit of trees [27].  Creeping juniper occurs
from Newfoundland westward to British Columbia, the Yukon, and Alaska
[27].  Its range extends southward to Montana, Wyoming, and northern
Colorado and east to northeastern Iowa, northeastern Illinois, New York,
and Massachusetts [27].

Evidence suggests that a dry period which occurred 7,000 to 8,000 years
ago enabled creeping juniper to extend its range into North and South
Dakota, and Montana [2].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES28  Western hardwoods
   FRES29  Sagebrush
   FRES34  Chaparral - mountain shrub
   FRES36  Mountain grasslands
   FRES38  Plains grasslands
   FRES39  Prairie


STATES : 
     AK  IL  IA  ME  MA  MI  MN  MT  NE  NY
     ND  SD  VT  WI  WY  AB  BC  MB  NB  NF
     NT  NS  ON  PE  PQ  SK  YT


ADMINISTRATIVE UNITS : 
     ACAD  BADL  EFMO  FIIS  GATE  GLAC
     ISRO  SLBE  THRO  WICA


BLM PHYSIOGRAPHIC REGIONS : 
    8  Northern Rocky Mountains
    9  Middle Rocky Mountains
   10  Wyoming Basin
   14  Great Plains
   15  Black Hills Uplift
   16  Upper Missouri Basin and Broken Lands


KUCHLER PLANT ASSOCIATIONS : 
   K011  Western ponderosa forest
   K012  Douglas-fir forest
   K016  Eastern ponderosa forest
   K018  Pine - Douglas-fir forest
   K040  Saltbush - greasewood
   K055  Sagebrush steppe
   K056  Wheatgrass - needlegrass shrubsteppe
   K063  Foothills prairie
   K064  Grama - needlegrass - wheatgrass
   K065  Grama - buffalograss
   K066  Wheatgrass - needlegrass
   K081  Oak savanna
   K098  Northern floodplain forest


SAF COVER TYPES : 
    42  Bur oak
   210  Interior Douglas-fir
   219  Limber pine 
   235  Cottonwood - willow
   236  Bur oak
   237  Interior ponderosa pine


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Creeping juniper is an indictor in a number of grassland or drier
coniferous forest habitat types of the northern Great Plains.  It occurs
most commonly as a codominant with little bluestem (Schizachyrium
scoparium) or sun sedge (Carex heliophila) in plains grassland habitat
or community types [10,21,22,24].  Creeping juniper frequently occurs as
an understory dominant with limber pine (Pinus flexilis) in certain
habitat types of southwestern North Dakota [10].  Publications listing
creeping juniper as an indicator are as follows:

Native woodland ecology  and habitat classification of southwestern
  North Dakota [10]
The vegetation of the Grand River/Cedar River, Sioux, and Ashland
  Districts of the Custer National Forest:  a habitat type
  classification [21]
The vegetation of Theodore Roosevelt National Park, North Dakota:  a
  habitat type classification [22]

Related categories for Species: Juniperus horizontalis | Creeping Juniper