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CEGL000686 Quercus emoryi / Piptochaetium fimbriatum Scrub Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Emory Oak / Pinyon Speargrass Scrub Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This Madrean semi-riparian woodland occurs in the "Borderlands" area of southwestern New Mexico and possibly extends into southeastern Arizona, western Texas and the northern Sierra Madre Occidentale of Mexico. Stands are naturally small, being restricted to elevated alluvial stream terraces on mesic aspects. This association has only been documented from one site in the Animas Mountains at 1770 m elevation. The stand occurs in a narrow valley on a north-facing terrace near an intermittent stream channel. The site is gently sloping (4%) with a sandy alluvium substrate. There is high cover (96%) of plant litter. These late-successional woodlands are dominated by broad-leaved evergreen trees with a sparse shrub layer and a moderately sparse herbaceous layer(<25% cover). The tree canopy is generally between 25-60% cover and is codominated by Quercus emoryi and Quercus arizonica with scattered Juniperus deppeana. The shrub layer consists of scattered shrubs (<10% cover) and often has high diversity. Rhus trilobata, Nolina microcarpa, Garrya wrightii, Juniperus deppeana, Pinus discolor, Cercocarpus montanus, Ericameria laricifolia, and Cylindropuntia imbricata are commonly present. The herbaceous layer is codominated by the perennial grasses Piptochaetium fimbriatum and Bouteloua curtipendula, but is typically very diverse and includes sparse cover of many other grass and forb species. The diagnostic characteristics of this late-successional oak woodland are a moderately dense tree layer that is dominated or codominated by Quercus emoryi with Piptochaetium fimbriatum present to dominating in the herbaceous layer.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Piptochaetium fimbriatum is the diagnostic perennial grass species of the herbaceous layer, but it is not known how consistent this trait is because only a single stand has been described.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: These late-successional woodlands are dominated by broad-leaved evergreen trees with a sparse shrub layer and a moderately sparse herbaceous layer(<25% cover). The tree canopy is generally between 25-60% cover and is codominated by Quercus emoryi and Quercus arizonica with scattered Juniperus deppeana. The shrub layer consists of scattered shrubs (<10% cover) and often has high diversity. Rhus trilobata, Nolina microcarpa, Garrya wrightii, Juniperus deppeana, Pinus discolor, Cercocarpus montanus, Ericameria laricifolia, and Cylindropuntia imbricata (= Opuntia imbricata) are commonly present. The herbaceous layer is codominated by the perennial grasses Piptochaetium fimbriatum and Bouteloua curtipendula, but is typically very diverse and includes sparse cover of many other grass and forb species. The diagnostic characteristics of this late-successional oak woodland are a moderately dense tree layer that is dominated or codominated by Quercus emoryi with Piptochaetium fimbriatum present to dominating in the herbaceous layer.
Dynamics: No Data Available
Environmental Description: Stands are naturally small, being restricted to elevated alluvial stream terraces on mesic aspects. This association has only been documented from one site in the Animas Mountains at 1770 m elevation. The stand occurs in a narrow valley on a north-facing terrace near an intermittent stream channel. The site is gently sloping (4%) with a sandy alluvium substrate.
Geographic Range: Only documented from the southwestern corner of New Mexico, but it probably occurs elsewhere in the "Borderlands" region of southeastern Arizona, southwestern New Mexico and northwestern Mexico, and potentially in the Trans-Pecos region of Texas and Mexico
Nations: MX?,US
States/Provinces: AZ?, MXCHH?, NM
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689520
Confidence Level: Low - Poorly Documented
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.1 Warm Temperate Forest & Woodland Formation | F018 | 1.B.1 |
| Division | 1.B.1.Nd Madrean-Balconian Forest & Woodland Division | D060 | 1.B.1.Nd |
| Macrogroup | 1.B.1.Nd.1 Alligator Juniper - Mexican Pinyon - Arizona White Oak Madrean Lowland Evergreen Woodland Macrogroup | M010 | 1.B.1.Nd.1 |
| Group | 1.B.1.Nd.1.a Arizona White Oak - Emory Oak - Mexican Blue Oak Woodland Group | G201 | 1.B.1.Nd.1.a |
| Alliance | A3101 Arizona White Oak - Emory Oak - Gray Oak Scrub Woodland Alliance | A3101 | 1.B.1.Nd.1.a |
| Association | CEGL000686 Emory Oak / Pinyon Speargrass Scrub Woodland | CEGL000686 | 1.B.1.Nd.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Quercus emoryi / Piptochaetium fimbriatum PA (Muldavin et al. 1998a)
= Quercus emoryi / Piptochaetium fimbriatum PA (Bourgeron et al. 1993b)
= Quercus emoryi / Piptochaetium fimbriatum PA (Bourgeron et al. 1995a)
= Quercus emoryi / Piptochaetium fimbriatum PA (Bourgeron et al. 1993b)
= Quercus emoryi / Piptochaetium fimbriatum PA (Bourgeron et al. 1995a)
- Bourgeron, P. S., L. D. Engelking, H. C. Humphries, E. Muldavin, and W. H. Moir. 1993b. Assessing the conservation value of the Gray Ranch: Rarity, diversity and representativeness. Unpublished report prepared for The Nature Conservancy by the Western Heritage Task Force, Boulder, CO. (Volume I and II).
- Bourgeron, P. S., L. D. Engelking, H. C. Humphries, E. Muldavin, and W. H. Moir. 1995a. Assessing the conservation value of the Gray Ranch: Rarity, diversity and representativeness. Desert Plants 11(2-3):3-68.
- 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.
- Muldavin, E., V. Archer, and P. Neville. 1998a. A vegetation map of the Borderlands Ecosystem Management Area. Final report submitted to USDA Forest Service, Rocky Mountain Experiment Station, Flagstaff, AZ, by the New Mexico Natural Heritage Program, University of New Mexico, Albuquerque, NM. 58 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.