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CEGL000081 Pseudotsuga menziesii - Sequoia sempervirens / Polystichum munitum Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Douglas-fir - Redwood / Western Swordfern Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This giant conifer forest is found near the northern distributional limit of Sequoia sempervirens. Sequoia sempervirens and Pseudotsuga menziesii dominate the tall canopy of these coastal fog-belt forests. This association occurs on intermediate to mesic sites, usually with a northern or eastern aspect. Slopes are relatively low (5-10°). Tree cover is 55-75%. Soils are fine-textured, with good moisture-holding capacity, well-drained and relatively deep, derived from silt or sandstone. Individuals of Sequoia sempervirens tend to be highly scattered except in the most moist sites where it is dominant to Pseudotsuga menziesii. Sequoia sempervirens often supports most of the basal area on a site. Tsuga heterophylla very rarely codominates. Shrub cover is variable (10-80%) and consists primarily of Vaccinium ovatum. Herb cover varies from 30-70% and is most often characterized by Oxalis oregana, Trillium ovatum, Polystichum munitum, and Galium spp. Other tree species which may be common are Umbellularia californica, Alnus rubra, Notholithocarpus densiflorus, and Acer macrophyllum, which when present form a secondary canopy below the giant conifers. Occasionally, this type occurs in a matrix with ~Pseudotsuga menziesii - Sequoia sempervirens / Rhododendron macrophyllum / Vaccinium ovatum Forest (CEGL000082)$$.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Sequoia sempervirens and Pseudotsuga menziesii dominate the tall canopy of these coastal fog-belt forests. Individuals of Sequoia sempervirens tend to be highly scattered except in the most moist sites where it is dominant to Pseudotsuga menziesii. Sequoia sempervirens often supports most of the basal area on a site. Tsuga heterophylla very rarely codominates. Shrub cover is variable (10-80%) and consists primarily of Vaccinium ovatum. Herb cover varies from 30-70% and is most often characterized by Oxalis oregana, Trillium ovatum, Polystichum munitum, and Galium spp. Other tree species which may be common are Umbellularia californica, Alnus rubra, Notholithocarpus densiflorus (= Lithocarpus densiflorus), and Acer macrophyllum, which when present form a secondary canopy below the giant conifers.
Dynamics: No Data Available
Environmental Description: This giant conifer forest is found near the northern distributional limit of Sequoia sempervirens. This association occurs on intermediate to mesic sites, usually with a northern or eastern aspect. Slopes are relatively low (5-10°). Tree cover is 55-75%. Soils are fine-textured, with good moisture-holding capacity, well-drained and relatively deep, derived from silt or sandstone.
Geographic Range: Restricted to the coastal fog belt in southwestern Oregon and northwestern California.
Nations: US
States/Provinces: CA, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683893
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Nd Vancouverian Forest & Woodland Division | D192 | 1.B.2.Nd |
| Macrogroup | 1.B.2.Nd.3 Western Hemlock - Sitka Spruce - Redwood Rainforest Macrogroup | M024 | 1.B.2.Nd.3 |
| Group | 1.B.2.Nd.3.a Redwood Forest Group | G235 | 1.B.2.Nd.3.a |
| Alliance | A3403 Coastal Redwood Forest Alliance | A3403 | 1.B.2.Nd.3.a |
| Association | CEGL000081 Douglas-fir - Redwood / Western Swordfern Forest | CEGL000081 | 1.B.2.Nd.3.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pseudotsuga menziesii - Tsuga heterophylla - Acer macrophyllum / Oxalis oregana (Frenkel 1976)
= Sequoia sempervirens / Polystichum munitum (Mahony and Stuart 2000)
= Sequoia sempervirens/Vaccinium ovatum/Polystichum munitum association (Stumpf et al. 2017)
= Sequoia sempervirens / Polystichum munitum (Mahony and Stuart 2000)
= Sequoia sempervirens/Vaccinium ovatum/Polystichum munitum association (Stumpf et al. 2017)
- Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
- Frenkel, R. E. 1976. Preserve analysis: Winchuck Slope. State Land Board and NAPAC, Salem.
- Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 pp.
- Mahony, T. M., and J. D. Stuart. 2000. Old-growth forest associations in the northern range of coastal redwood. Madroño 47:53-60.
- Stumpf, K. A., Cogan Technology, and Kier Associates. 2017. Vegetation mapping and classification project: Redwood National and State Parks, California. Natural Resource Report NPS/REDW/NRR--2017/1431. National Park Service, Fort Collins, CO. 270 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.