DISTRIBUTION AND OCCURRENCE
SPECIES: Alnus viridis ssp. sinuata | Sitka Alder 



GENERAL DISTRIBUTION : 
Sitka alder is distributed from central Alaska and the Yukon Territory
south throughout British Columbia and western Alberta, and from
Washington to northwestern California, east to Idaho and central Montana
[27,29,35].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   FRES22  Western white pine
   FRES23  Fir - spruce
   FRES24  Hemlock - Sitka spruce
   FRES26  Lodgepole pine


STATES : 
     AK  CA  ID  MT  OR  WA  WY  AB  BC  YT


ADMINISTRATIVE UNITS : 
     CODA  CRLA  DENA  GLBA  GLAC  LACL
     MORA  NOCA  OLYM  WRST  YELL


BLM PHYSIOGRAPHIC REGIONS : 
    1  Northern Pacific Border
    2  Cascade Mountains
    4  Sierra Mountains
    8  Northern Rocky Mountains
    9  Middle Rocky Mountains


KUCHLER PLANT ASSOCIATIONS : 
   K001  Spruce - cedar - hemlock
   K002  Cedar - hemlock - Douglas-fir forest
   K003  Silver fir - Douglas-fir forest
   K004  Fir - hemlock forest
   K007  Red fir forest
   K012  Douglas-fir forest
   K013  Cedar - hemlock - pine forest
   K014  Grand fir - Douglas-fir forest
   K015  Western spruce - fir forest


SAF COVER TYPES : 
   201  White spruce
   203  Balsam poplar
   205  Mountain hemlock
   206  Englemann spruce - subalpine fir
   207  Red fir
   210  Interior Douglas-fir
   213  Grand fir
   218  Lodgepole pine
   223  Sitka spruce
   224  Western hemlock
   225  Western hemlock - Sitka spruce
   226  Coastal true fir - hemlock
   227  Western redcedar - western hemlock
   228  Western redcedar
   229  Pacific Douglas-fir
   230  Douglas-fir - western hemlock
   251  White spruce - aspen


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Sitka alder is a seral shrub or small tree typically found on moist cool
sites within western redcedar (Thuja plicata), western hemlock (Tsuga
heterophylla), subalpine fir (Abies lasiocarpa), or Pacific silver fir
(A. amabilis) forests in the Cascades and Rocky Mountains
[1,17,29,40,46].

Published classification schemes listing Sitka alder as an indicator
species or as a dominant part of the vegetation in community types (cts)
or habitat types (hts) are presented below:

Area             Classification            Authority

OR,WA            general veg. cts          Franklin & Dyrness 1973

OR:Eagle Cap     general veg. cts          Cole 1982
 Wilderness

OR:Monument Peak general veg. cts          Aller 1965

wcID             general veg. cts          Curtis 1986
eWA,nID          forest hts                Daubenmire & Daubenmire 1968

ID               forest hts                Cooper & others 1987

cID              grand fir/blue hkbry hts  Steele & Geier-Hayes 1987

cID              forest hts                Steele & others 1981

MT               forest hts                Pfister & others 1977

Related categories for Species: Alnus viridis ssp. sinuata | Sitka Alder