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CEGL002846 Thuja plicata - Acer macrophyllum - Abies grandis / (Oemleria cerasiformis) / Polystichum munitum Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Western Red-cedar - Bigleaf Maple - Grand Fir / (Indian-plum) / Western Swordfern Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This small-patch forest community occurs on sites with strongly fluctuating water tables within the Georgia Basin of coastal British Columbia at elevations from 0 to 150 m and similar sites in pockets of Oregon and Washington. This community has a closed mixed deciduous and coniferous overstory, moderately shrubby understory dominated by Oemleria cerasiformis, well-developed herb layer characterized by Polystichum munitum, and a moderately well-developed moss layer dominated by Eurhynchium praelongum. Moderate to high cover of Thuja plicata, Acer macrophyllum, Abies grandis, and Alnus rubra comprise the closed overstory. The moderately well-developed shrub layer is characterized by high cover of Oemleria cerasiformis with low cover of Symphoricarpos albus. High cover of Polystichum munitum characterizes the herb layer which also includes low cover of Tiarella trifoliata, Rubus ursinus, and Trillium ovatum. The moderately well-developed moss layer is characterized by high cover of Eurhynchium praelongum.
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: Moderate to high cover of Thuja plicata, Acer macrophyllum, Abies grandis, and Alnus rubra comprise the closed overstory of this small-patch community. Moderate cover of Pseudotsuga menziesii also sometimes occurs in the overstory. High cover of Oemleria cerasiformis typically characterizes the moderately well-developed shrub layer (British Columbia only), along with low cover of Symphoricarpos albus, sometimes with low to moderate cover of Rubus spectabilis, Ribes divaricatum, Frangula purshiana (= Rhamnus purshiana), and Sambucus racemosa. The well-developed herb layer is dominated by high cover of Polystichum munitum with low cover of Tiarella trifoliata, Rubus ursinus, Trillium ovatum, and sometimes with low to moderate cover of Trientalis borealis, Galium triflorum, Tellima grandiflora, Mycelis muralis (= Lactuca muralis), and Dryopteris expansa. High cover of Eurhynchium praelongum dominates the moss layer along with low cover of Mnium sp., Leucolepis acanthoneuron, and Eurhynchium oreganum.
Dynamics: This is a late-successional (mature and climax) edaphic forest community. Stand-replacing events were likely infrequent. Within mature and old forests, small gaps result from the death of single trees or small groups of trees due to windthrow, root-rots, bark beetles, or other insect and disease pests. Too few occurrences remain to determine more specifically the stand dynamics of this type.
Environmental Description: This small-patch forest community occurs on sites with strongly fluctuating water tables in coastal British Columbia, on Vancouver Island, Gulf Islands and pockets along the south coast of mainland British Columbia, Washington and Oregon. This community occurs on level sites with subhygric to hygric soil moisture regimes and rich soil-nutrient regimes. Groundwater is at or above the soil surface during the winter months, gradually lowering to well below the surface in the driest months of the year. Soils are variably textured with variable amounts of clay, silt and sand and are typically classified as Sombric Brunisols or Gleysols.
Geographic Range: This community occurs in British Columbia within the Coastal Douglas-fir zone (CDF), which occupies a total of 2593 square km. It occurs within the Georgia Depression Ecoregion of British Columbia, specifically in the rainshadow of the Olympic and Vancouver Island mountains, from the Saanich Peninsula (Victoria) northward along the southeast coast of Vancouver Island to Bowser, from Cortes Island southward through the Gulf Islands, and along a narrow strip of the mainland Sunshine Coast near Halfmoon Bay and Powell River and adjacent islands, including southwest Texada Island. It occurs rarely in the San Juan Islands and possibly elsewhere in the northern Puget Trough of Washington.
Nations: CA,US
States/Provinces: BC, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.787986
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: G1
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.f Western Hemlock - Sitka Spruce North-Central Pacific Rainforest Group | G751 | 1.B.2.Nd.3.f |
| Alliance | A3609 Grand Fir - Sitka Spruce - Western Red-cedar Forest Alliance | A3609 | 1.B.2.Nd.3.f |
| Association | CEGL002846 Western Red-cedar - Bigleaf Maple - Grand Fir / (Indian-plum) / Western Swordfern Forest | CEGL002846 | 1.B.2.Nd.3.f |
Concept Lineage: CEGL003460 merged into CEGL002846.
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Thuja plicata-Acer macrophyllum-Abies grandis/Oemleria cerasiformis/Polystichum munitum (Meidinger et al. 2005) [PNWCOAST_213]
= CDF mm /13 (Green and Klinka 1994)
= CDF mm /13 (Green and Klinka 1994)
- BCCDC [British Columbia Conservation Data Centre]. 2018. Unpublished data on file at British Columbia Conservation Data Center. Ministry of Environment, Victoria.
- BCMFRB [British Columbia Ministry of Forests Research Branch]. 2003a. Vegetation classification hierarchy: BECMaster May 2003. British Columbia Ministry of Forests, Victoria, BC.
- BCMFRB [British Columbia Ministry of Forests Research Branch]. 2005a. Vegetation classification hierarchy: BECMaster 2005. British Columbia Ministry of Forests, Victoria, BC.
- BCMFRB [British Columbia Ministry of Forests Research Branch]. 2005b. Vegetation and environment plot data: BECMaster January 2005. British Columbia Ministry of Forests, Victoria, BC.
- BCMWLAP [British Columbia Ministry of Water, Land and Air Protection]. 2004a. Grizzly Bear. In: Accounts and measures for managing identified wildlife. British Columbia Ministry of Water, Land and Air Protection, Victoria, BC. 52 pp.
- BCMWLAP [British Columbia Ministry of Water, Land and Air Protection]. 2004e. Keen''s Long-eared Myotis. In: Accounts and measures for managing identified wildlife. British Columbia Ministry of Water, Land and Air Protection, Victoria, BC. 52 pp.
- Brown, K. J., and R. J. Hebda. 1999. Long-term fire incidence in coastal forests of British Columbia. Northwest Science 73:41-43.
- COSEWIC [Committee on the Status of Endangered Wildlife in Canada]. 2002. COSEWIC assessment and update status report on the Western Screech-owl Otus kennicottii in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa. vi + 31 pp.
- Cadrin, C. M., and M. Wolowicz. 2005. Application of terrestrial ecosystem mapping on coastal British Columbia to conservation status assessments of ecological communities. British Columbia Conservation Data Centre, Ministry of Sustainable Resource Management, Victoria, BC.
- Green, R. N., and K. Klinka. 1994. A field guide to site interpretation for the Vancouver Forest Region. British Columbia Ministry of Forests. ISSN 0229-1622 Land Management Handbook 28. 285 pp.
- Meidinger, D., C. Chappell, C. Cadrin, G. Kittel, C. McCain, K. Boggs, J. Kagan, G. Cushon, A. Banner, and T. DeMeo. 2005. International Vegetation Classification of the Pacific Northwest: International correlation of temperate coastal forest plant associations of Oregon, Washington, British Columbia and Alaska. Contributors: B.C. Ministry of Forests, USDA Forest Service, B.C. Conservation Data Centre, Alaska Natural Heritage Program, Washington Natural Heritage Program, and Oregon Natural Heritage Information Center.
- Ward, P., G. Radcliffe, J. Kirkby, J. Illingworth, and C. Cadrin. 1998. Sensitive Ecosystems Inventory: East Vancouver Island and Gulf Islands 1993-1997. Volume 1: Methodology, Ecological Descriptions and Results. Technical Report Series No. 320, Canadian Wildlife Service, Pacific and Yukon Region, Victoria, BC. [http://a100.gov.bc.ca/appsdata/acat/documents/r2124/SEI_4206_rpt1_1111625239116_8be42252200c4f0283b18cac66eed366.pdf]
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.