Print Report
CEGL002750 Acer negundo / Rhus trilobata Riparian Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Box-elder / Skunkbush Sumac Riparian Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This box-elder woodland association is currently only known from Dinosaur National Monument in Colorado and Capitol Reef National Park in Utah, and the following description is based on occurrences there. Additional global information will be added as it becomes available. At Dinosaur, this association occurs in a spring seep on a moderately angled, northwest-facing, concave slope in the Round Valley Formation at elevations below 1800 m. The nonvegetated ground cover is primarily litter, with scattered large rocks and patches of bedrock. Soil texture is loamy sand. At Capitol Reef, it is found tucked into an alcove at the head of a tributary canyon on a steep colluvial slope at 1875 m elevation. Large colluvial boulders cover most of the unvegetated surface, with minor cover by bare soil and litter. The soil is coarse-textured and derived from underlying Chinle shale and Wingate sandstone colluvium. Acer negundo forms a canopy layer between 5 and 10 m high with 15-20% cover. Rhus trilobata and Fraxinus anomala dominate the somewhat open shrub layer 2-5m tall. Other shrubs at Capitol Reef include Ephedra viridis, Amelanchier utahensis, and Mahonia repens with minimal cover. At Dinosaur, Amelanchier utahensis and Salix exigua occur with minimal cover. Species codominating the herbaceous layer are Clematis ligusticifolia, Solidago canadensis, Lactuca serriola, and Equisetum laevigatum, totaling more than 20% cover. Some graminoid species with low cover include Pascopyrum smithii, Piptatheropsis micrantha, and Poa pratensis.
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: Acer negundo forms a canopy layer between 5 and 10 m high with 15-20% cover. Rhus trilobata and Fraxinus anomala dominate the somewhat open shrub layer 2-5m tall. Other shrubs at Capitol Reef include Ephedra viridis, Amelanchier utahensis, and Mahonia repens with minimal cover. At Dinosaur, Amelanchier utahensis and Salix exigua occur with minimal cover. Species codominating the herbaceous layer are Clematis ligusticifolia, Solidago canadensis, Lactuca serriola, and Equisetum laevigatum, totaling more than 20% cover. Some graminoid species with low cover include Pascopyrum smithii, Piptatheropsis micrantha (= Piptatherum micranthum), and Poa pratensis.
Dynamics: No Data Available
Environmental Description: At Dinosaur National Monument, this association occurs in a spring seep on a moderately angled, northwest-facing, concave slope in the Round Valley Formation at elevations below 1800 m. The nonvegetated ground cover is primarily litter, with scattered large rocks and patches of bedrock. Soil texture is loamy sand. At Capitol Reef National Park, it is found tucked into an alcove at the head of a tributary canyon on a steep colluvial slope at 1875 m elevation. Large colluvial boulders cover most of the unvegetated surface, with minor cover by bare soil and litter. The soil is coarse-textured and derived from underlying Chinle shale and Wingate sandstone colluvium.
Geographic Range: This woodland association is currently only known from Dinosaur National Monument in Colorado and Capitol Reef National Park in Utah. Additional range information will be added as it becomes available.
Nations: US
States/Provinces: CO, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.770532
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
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.3 Temperate Flooded & Swamp Forest Formation | F026 | 1.B.3 |
| Division | 1.B.3.Nc Rocky Mountain-Great Basin Montane Flooded & Swamp Forest Division | D195 | 1.B.3.Nc |
| Macrogroup | 1.B.3.Nc.1 Engelmann Spruce - Narrowleaf Cottonwood / Red-osier Dogwood Riparian & Swamp Forest Macrogroup | M034 | 1.B.3.Nc.1 |
| Group | 1.B.3.Nc.1.a Engelmann Spruce - Blue Spruce - Narrowleaf Cottonwood Riparian & Swamp Forest Group | G506 | 1.B.3.Nc.1.a |
| Alliance | A4154 Box-elder - Thinleaf Alder - Red-osier Dogwood Riparian Woodland Alliance | A4154 | 1.B.3.Nc.1.a |
| Association | CEGL002750 Box-elder / Skunkbush Sumac Riparian Woodland | CEGL002750 | 1.B.3.Nc.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Acer negundo / Rhus trilobata Woodland (Coles et al. 2008a)
- Clark, D., M. Dela Cruz, T. Clark, J. Coles, S. Topp, A. Evenden, A. Wight, G. Wakefield, and J. Von Loh. 2009. Vegetation classification and mapping project report, Capitol Reef National Park. Natural Resource Report NPS/NCPN/NRTR--2009/187. National Park Service, Fort Collins, CO. 882 pp.
- Coles, J., D. Cogan, D. Salas, A. Wight, G. Wakefield, J. Von Loh, and A. Evenden. 2008a. Vegetation classification and mapping project report, Dinosaur National Monument. Natural Resource Technical Report NPS/NCPN/NRTR-2008/112. National Park Service, Fort Collins, CO. 814 pp.
- Romme, W. H., K. D. Heil, J. M. Porter, and R. Fleming. 1993. Plant communities of Capitol Reef National Park, Utah. USDI National Park Service, Technical Report NPS/NAUCARE/NRTER-93/02. Cooperative Park Studies Unit, Northern Arizona University. 37 pp.
- Stevens, J. E., D. S. Jones, and K. J. Benner. 2015. Vegetation classification and mapping project report: Bighorn Canyon National Recreation Area. Natural Resource Report NPS/GRYN/NRR--2015/1070. National Park Service, Fort Collins, CO. 350 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.