Natural Resources
Conservation Service
Ecological site F043CY506WA
Warm-Frigid, Xeric Loamy, Granitic, Mountains (Douglas-fir/ warm dry shrub)
Last updated: 9/08/2023
Accessed: 11/13/2024
General information
Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
MLRA notes
Major Land Resource Area (MLRA): 043C–Blue and Seven Devils Mountains
Major land resource area (MLRA): 043C-Blue and Seven Devils
Description of MLRAs can be found in: United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296.
Available electronically at: http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_053624#handbook
LRU notes
Most commonly found in LRU 43C04 (Dissected Basalt Highlands). Also found in adjacent areas of 43C01 (Cold, Moist Volcanic Highlands)
Classification relationships
This ESD fits into the National Vegetation Standard’s Douglas-fir Middle Rocky Mountain Mesic-Wet Forest Alliance and Washington State’s Natural Heritage Program’s Northern Rocky Mt. Dry Mesic Montane Mixed Conifer Forest.
Ecological site concept
This ESD is distinguished by an overstory of ponderosa pine, and Douglas-fir with an understory of shrubs such as common snowberry, mallow ninebark and oceanspray. Common forbs are pinegrass, heartleaf arnica, lupines, western hawkweed and strawberry. It occurs on foothills, mountainsides, and canyon walls. Soils have developed in mixed volcanic ash and thin loess, over colluvium and residuum from granite and quartzite. The soils are deep or very deep and have adequate available water capacity to a depth of 1 m. The soils are well-drained.
Associated sites
F043CY503WA |
Frigid, Moist-Xeric Loamy, Canyons and Mountains (Grand fir/Moist Shrub) frigid, moist-xeric, ashy surface, basalt/andesite geology. |
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F043CY505WA |
Warm-Frigid, Xeric, Loamy Eolian Hills and Plateaus (Douglas-fir/ warm dry shrub) warm-frigid, xeric, mixed ash and thick loess, Other geology (dominantly eolian deposits). |
Similar sites
F043CY507WA |
Warm-Frigid, Xeric Loamy, Hills and Plateaus, High WT (Douglas-fir/ warm dry shrub) Site has a perched water table at 18 to 36 inches during Feb-May |
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F043CY504WA |
Warm-Frigid, Xeric, Loamy, Basalt Mountains and Plateaus (Douglas-fir/warm dry shrub) Basalt geology |
F043CY505WA |
Warm-Frigid, Xeric, Loamy Eolian Hills and Plateaus (Douglas-fir/ warm dry shrub) Predominately eolian deposit geology |
Table 1. Dominant plant species
Tree |
(1) Pseudotsuga menziesii var. glauca |
---|---|
Shrub |
(1) Physocarpus malvaceus |
Herbaceous |
(1) Calamagrostis rubescens |
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