Key to Dominance Types

• Trees > 25% cover
• Trees < 25% cover

Trees > 25 % cover

• Oregon white oak > 25% cover................................................................. Oak Woodland
• Oregon white oak > 50% of total tree cover ............................................... Oak Woodland
• Ponderosa pine > 25% and total tree cover < 70% (open canopy woodland)
  ...................................................................................... Savanna and Conifer Woodland
• Ponderosa pine > 50% of total tree cover and total tree cover < 70%
  ...................................................................................... Savanna and Conifer Woodland
• Understory dominated by Roemer's fescue and/or red fescue
  ...................................................................................... Savanna and Conifer Woodland
• Lodgepole (shore) pine > 25% ..................................... Lodgepole pine - Douglas-fir Forest
• Native deciduous broadleaf trees > 75% of total tree cover . Red alder - bigleaf maple Forest
• Western hemlock or western redcedar > 10%
  ................................................. Douglas-fir - western hemlock - western redcedar Forest
• Western hemlock or western redcedar the dominant successful tree regeneration
  ................................................. Douglas-fir - western hemlock - western redcedar Forest
• Grand fir > 10% ................................................................... Douglas-fir - grand fir Forest
• Pacific madrone > 20% ............................................ Douglas-fir - Pacific madrone Forest
• Grand fir the dominant successful tree regeneration ................ Douglas-fir - grand fir Forest
• Douglas-fir the dominant successful tree regeneration ............................ Douglas-fir Forest
• Oceanspray + baldhip rose + snowberry + serviceberry + beaked hazel > 25%
  .......................................................................................................... Douglas-fir Forest
• Salal > 25% and oceanspray > 10% ..................................................... Douglas-fir Forest
• Tall Oregongrape, western fescue, blue wildrye, long-stolon sedge, yerba buena, bigleaf sandwort, pipsissewa, hairy honeysuckle or poison-oak > 1% or any three of these species present .............................................................................................. Douglas-fir Forest
• Not as above ............................. Douglas-fir - western hemlock - western redcedar Forest

Trees < 25% cover

• Shrubs < 25%
  • Trees > 10% and not confined to mesic microsites .. Savanna and Conifer Woodland
  • Trees < 10% or confined to mesic microsites ........................................ Grassland
• Shrubs > 25% ........................................................................... Shrubland - Unclassified