Print Report
CEGL000662 Populus fremontii / Acer negundo Riparian Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Fremont Cottonwood / Box-elder Riparian Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This forested riparian association is known from canyon bottoms in southwestern New Mexico, southern Utah and northern Arizona, but it is likely to also occur in Nevada and California. Populus fremontii and Acer negundo form the dominant overstory canopy, often with Juglans major as a codominant in the southern part of the range. Associated woody understory species form a very open canopy and do not form a true shrub layer, and may include Artemisia tridentata, Baccharis salicina, Brickellia longifolia, Brickellia californica, Ericameria nauseosa, Quercus gambelii, Rhus aromatica, Rhus trilobata, Salix exigua, and Toxicodendron rydbergii. The herbaceous component of the community is variable depending on the site, the depth to water table and the flood frequency. Stands occur on gently sloping, lower riparian terraces associated with perennial streams. These are sites that flood periodically but not necessarily annually.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This northern extent of this association is largely known and described from National Park Service inventory efforts in the Colorado Plateau. Reported only by Henry (1981) but has also been documented in Capitol Reef National Park in Utah. Further east, in a zone of hybridization between Populus fremontii and Populus deltoides ssp. wislizeni, the very similar association ~Populus deltoides ssp. wislizeni / Acer negundo Flooded Woodland (CEGL002336)$$ occurs in Natural Bridges National Monument.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: In this association, Populus fremontii and Acer negundo form moderate to dense canopies, sometimes accompanied by Juglans major as a codominant in the southern part of the range. Salix gooddingii is absent. Associated woody understory species in the Colorado Plateau include Ericameria nauseosa, Artemisia tridentata, Rhus aromatica, Rhus trilobata, Salix exigua, Brickellia longifolia, Baccharis salicina, Brickellia californica, Toxicodendron rydbergii, and Quercus gambelii. Associated woody species in southern New Mexico include Ptelea trifoliata var. angustifolia (= Ptelea angustifolia) and Amorpha fruticosa. The herbaceous component of the community is variable depending on the site, the depth to water table and the flood frequency. The herbaceous layer includes a diversity of both graminoids and forbs; Clematis ligusticifolia, Artemisia ludoviciana, Conyza canadensis, Lepidium montanum, Euthamia occidentalis (= Solidago occidentalis), Machaeranthera canescens, Medicago sativa, Elymus trachycaulus, Elymus canadensis, Juncus tenuis, Sporobolus contractus, and Equisetum spp. are common species.
Dynamics: This association occurs on lower terraces and sometimes on the banks of perennial streams. The principal species depend on the water table being within 1 meter of the surface throughout the growing season in order to become established. Once established, both Populus fremontii and Acer negundo are capable of persisting (although not reproducing) as terraces become isolated from the water table.
Environmental Description: Stands occur on gently sloping, lower riparian terraces, canyon bottoms, and washes associated with perennial streams. These are sites that flood periodically but not annually. Soils are coarse, sandy and generally are poorly developed.
Geographic Range: This association is known to occur in southwestern New Mexico, northern Arizona and southern Utah. It may occur in Nevada and California.
Nations: US
States/Provinces: AZ, CA?, NM, NV?, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.687653
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G2Q
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.Nd Western North American Interior Flooded Forest Division | D013 | 1.B.3.Nd |
| Macrogroup | 1.B.3.Nd.2 Interior Warm & Cool Desert Riparian Forest Macrogroup | M036 | 1.B.3.Nd.2 |
| Group | 1.B.3.Nd.2.b Western Interior Riparian Forest & Woodland Group | G797 | 1.B.3.Nd.2.b |
| Alliance | A3803 Fremont Cottonwood - Velvet Ash - Goodding''s Willow Riparian Forest & Woodland Alliance | A3803 | 1.B.3.Nd.2.b |
| Association | CEGL000662 Fremont Cottonwood / Box-elder Riparian Forest | CEGL000662 | 1.B.3.Nd.2.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Populus fremontii - Acer negundo Association (Vaghti 2003)
= Populus fremontii / Acer negundo (Sawyer et al. 2009) [61.130.07]
= Populus fremontii / Acer negundo (Sawyer et al. 2009) [61.130.07]
- 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.
- 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.
- Henry, R. J. 1981. Riparian vegetation of two mountain ranges in southwestern New Mexico. Unpublished thesis, New Mexico State University, Las Cruces.
- Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
- Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
- 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.
- Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
- Tendick, A., J. Spence, M. Reid, K. Shulz, G. Kittel, K. Green, A. Wight, and G. Wakefield. 2017. Vegetation classification and mapping project report, Glen Canyon National Recreation Area and Rainbow Bridge National Monument. Natural Resource Report NPS/NCPN/NRR—2017/1500. National Park Service, Fort Collins, CO. 1464 pp.
- Vaghti, M. G. 2003. Riparian vegetation classification in relation to environmental gradients, Sacramento River, CA. Thesis, University of California, Davis.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.