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CEGL000858 Pinus ponderosa / Juglans major Flooded Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Ponderosa Pine / Arizona Walnut Flooded Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This semi-riparian forest is found south of the Mogollon Rim of Arizona, at elevations of 1680-1770 m, on terraces along perennial streams and large washes. The upper canopy is dominated by Pinus ponderosa and the subcanopy by Juglans major. Other subcanopy trees include Acer negundo, Quercus spp., Juniperus deppeana, Juniperus scopulorum, Pinus edulis, Pinus monophylla, and Pinus discolor. The shrub layer is moderate with Vitis arizonica, Frangula betulifolia, Rhus aromatica, and Salix boothii. The herbaceous layer is dominated by the graminoids Poa pratensis, Panicum bulbosum, Bromus ciliatus var. richardsonii, and Pascopyrum smithii. Forbs can be diverse. The most common are Geranium caespitosum, Galium mexicanum ssp. asperrimum, Pteridium aquilinum, Thalictrum fendleri, and Potentilla spp.
Diagnostic Characteristics: Juglans major or Vitis arizonica are common, but riparian trees such as Alnus oblongifolia, Acer negundo, Platanus wrightii, or Populus spp. are limited to microsites. Pinus edulis, Pinus discolor, and Pinus monophylla are absent or accidental.
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: The upper canopy is dominated by Pinus ponderosa and the subcanopy by Juglans major. Other subcanopy trees include Acer negundo, Quercus spp., Juniperus deppeana, Juniperus scopulorum, Pinus edulis, Pinus monophylla (= Pinus edulis var. fallax), and Pinus discolor. The shrub layer is moderate with Vitis arizonica, Frangula betulifolia (= Rhamnus betulifolia), Rhus aromatica, and Salix boothii (= Salix pseudocordata). The herbaceous layer is dominated by the graminoids Poa pratensis, Panicum bulbosum, Bromus ciliatus var. richardsonii (= Bromus richardsonii), and Pascopyrum smithii. Forbs can be diverse. The most common are Geranium caespitosum, Galium mexicanum ssp. asperrimum, Pteridium aquilinum, Thalictrum fendleri, and Potentilla spp.
Dynamics: This plant association occurs in predominately more mesic sites which may burn less frequently than upland sites. Arizona walnut has few adaptations to fire, although buried seeds may survive fires and provide post-fire regeneration.
Environmental Description: This association is restricted to terraces along perennial streams and large washes.
Geographic Range: This minor association is restricted to terraces along perennial streams and large washes south of the Mogollon Rim of Arizona, at elevations of 1680-1770 m. These conditions occur sporadically, so total area is expected to be small. It may be more common if it is found to be the same as the Pinus ponderosa riparian associations found in New Mexico.
Nations: US
States/Provinces: AZ
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686718
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.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 | A0957 Arizona Walnut - Little Walnut Riparian Forest Alliance | A0957 | 1.B.3.Nd.2.b |
| Association | CEGL000858 Ponderosa Pine / Arizona Walnut Flooded Woodland | CEGL000858 | 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: = Pinus ponderosa / Juglans major (Stuever and Hayden 1997a)
= Pinus ponderosa / Juglans major Habitat Type (Muldavin et al. 1996)
= Pinus ponderosa / Juglans major Habitat Type (Muldavin et al. 1996)
- Bassett, D., M. Larson, and W. Moir. 1987. Forest and woodland habitat types of Arizona south of the Mogollon Rim and southwestern New Mexico. Edition 2. USDA Forest Service, Southwestern Region, Albuquerque, NM.
- 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.
- DeVelice, R. L., J. A. Ludwig, W. H. Moir, and F. Ronco, Jr. 1986. A classification of forest habitat types of northern New Mexico and southern Colorado. General Technical Report RM-131. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO. 59 pp.
- Muldavin, E. H., R. L. DeVelice, and F. Ronco, Jr. 1996. A classification of forest habitat types of southern Arizona and portions of the Colorado Plateau. General Technical Report RM-GTR-287. USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO. 130 pp.
- Stuever, M. C., and J. S. Hayden. 1997a. Plant associations of Arizona and New Mexico, edition 3. Volume 1: Forests. USDA Forest Service, Southwestern Region. Habitat Typing Guides. 291 pp.
- Szaro, R. C. 1989. Riparian forest and scrubland community types of Arizona and New Mexico. Desert Plants Special Issue 9(3-4):70-139.
- USFS [U.S. Forest Service]. 1987b. Forest and woodland habitat types (plant associations) of Arizona south of the Mogollon Rim and southwestern New Mexico. USDA Forest Service, Southwestern Region, Albuquerque, NM. Second edition, 168 pp. plus insert.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.