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      Biosphere Reserve Information
     

United States of America

THREE SISTERS

 
       
  General Description   The Three Sisters Biosphere Reserve represents the essentially undisturbed landscape straddling the crest of the central Cascade Range (Oregon). The name refers to the three volcanoes that dominate the area and exemplify how glaciers and time can change the volcano landscape.
The biosphere reserve comprises permanent snowfields and glaciers, and numerous streams and small rivers. Coniferous forests dominate the area. The western slopes (below 1,200 meters above sea level) are dominated by douglas fir (Pseudotsuga menziesii) and western hemlock (Tsuga heterophylla). The subalpine forests are dominated by lodgepole pine (Pinus contorta), P. albicaulis and alpine fir (Abies lasiocarpa). Extensive parkland with a mosaic of forest patches and subalpine meadow communities extends from 1,500 - 2,000 meters above sea level.
Except intensive studies on geology, little research has been carried out in the biosphere reserve. However, the forests on western part are comparable with those of H. J. Andrews Experimental Forest and Biosphere Reserve, thus serving as a large control area for research. There is no permanent human settlement in the biosphere reserve. Recreational use is moderate though some hunting and fishing occurs.
  Major ecosystem type   Mixed mountain and highland systems
  Major habitats & land cover types  
  Location   44N; 12150'W
  Area (hectares)    
  Total   80,900
  Core area(s)  
  Buffer zone(s)  
  Transition area(s) when given  
  Altitude (metres above sea level)   +600 to +3,407
  Year designated   1976
  Administrative authorities   Three Sisters Wilderness USDA, Forest Service
 
  Brief description   Vegetation
Geology
  Specific variables...    
  Abiotic   Geology.
  Biodiversity   Vegetation studies/Plant cover.
  Socio-economic   n.a.
  Integrated monitoring   n.a.
 
  Contact address   Ruby Seitz
McKenzie Ranger District
57600 McKenzie Highway
97413 McKenzie Bridge, Oregon
United States of America
  Telephone   (1.541) 822 7256
  Fax   (1.541) 822 7254
  E-mail   ruseitz@fs.fed.us
  Web site   www.fs.fed.us/r6/centraloregon/
 
  Contact address   John Allen
McKenzie Ranger District
57600 McKenzie Highway
97413 McKenzie Bridge, Oregon
United States of America
  Telephone   (1.541) 822 3381
  Fax   (1.541) 822 7254
  E-mail  
  Web site   www.fs.fed.us/r6/centraloregon/
 
 
   


Last updated: 7/15/2003

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