Print Report
CEGL000824 Pinus leiophylla / Quercus hypoleucoides Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Chihuahuan Pine / Silverleaf Oak Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This highly diverse "Madrean" woodland association is restricted to the isolated "sky island" mountain ranges of southwestern New Mexico, southern Arizona, and northern Mexico. It is specifically known from the Canelo Hills and Santa Catalina, Santa Rita, Patagonia, Chiricahua, Peloncillo and Huachuca mountains. There are a few isolated outliers in the central highlands of Arizona (Fort Apache Indian Reservation). Stands typically occur at elevations from 1740-2165 m (5700-7100 feet) on steep to very steep slopes with variable aspects. Generally, sites are warm and dry to very dry. The association is characterized by an open canopy of Pinus leiophylla with a subcanopy of Pinus cembroides, Juniperus deppeana, and evergreen oaks, including Quercus hypoleucoides and Quercus arizonica. The dominance of Quercus hypoleucoides over Quercus arizonica is diagnostic. In some cases, Quercus arizonica will be absent; Quercus emoryi is also absent or rare. Along with evergreen oaks, the shrub layer may contain a variety of xeric species such as Arbutus arizonica, Nolina microcarpa, Agave parryi, Garrya wrightii, Yucca madrensis, Rhus aromatica, and Arctostaphylos spp. The Arctostaphylos spp. cover is generally less than 5%. The herb layer is characterized by xeric grasses such as Muhlenbergia longiligula, Muhlenbergia emersleyi, or Aristida schiedeana var. orcuttiana; Piptochaetium fimbriatum is absent or accidental. Forbs are diverse, variable, and sparse; the most constant are Hedeoma hyssopifolia, Desmodium rosei, Cheilanthes fendleri, Gnaphalium spp., and Packera neomexicana.
Diagnostic Characteristics: Quercus hypoleucoides is dominant oak. Pinus engelmannii is absent, but Pinus leiophylla is present. Piptochaetium fimbriatum is poorly represented or absent.
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 association is characterized by an open canopy of Pinus leiophylla with a subcanopy of Pinus cembroides, Juniperus deppeana, and evergreen oaks, including Quercus hypoleucoides and Quercus arizonica. The dominance of Quercus hypoleucoides over Quercus arizonica is diagnostic. In some cases, Quercus arizonica will be absent; Quercus emoryi is also absent or rare. Along with evergreen oaks, the shrub layer may contain a variety of xeric species such as Arbutus arizonica, Nolina microcarpa, Agave parryi, Garrya wrightii, Yucca madrensis (= Yucca schottii), Rhus aromatica, and Arctostaphylos spp. The Arctostaphylos spp. cover is generally less than 5%. The herb layer is characterized by xeric grasses such as Muhlenbergia longiligula, Muhlenbergia emersleyi, or Aristida schiedeana var. orcuttiana (= Aristida orcuttiana); Piptochaetium fimbriatum is absent or accidental. Forbs are diverse, variable, and sparse; the most constant are Hedeoma hyssopifolia, Desmodium rosei, Cheilanthes fendleri, Gnaphalium spp., and Packera neomexicana (= Senecio neomexicanus).
Dynamics: Fire is important for maintaining open stands and shrub dominance in the understory (Niering and Lowe 1984, Muldavin et al. 1996).
Environmental Description: Stands typically occur at elevations from 1740-2165 m (5700-7100 feet) on steep to very steep slopes with variable aspects. Generally, sites are warm and dry to very dry.
Geographic Range: This woodland association is restricted to the isolated mountain ranges of southwestern New Mexico, southern Arizona, and northern Mexico. It is specifically known from the Canelo Hills and Santa Catalina, Santa Rita, Patagonia, Chiricahua, Peloncillo and Huachuca mountains. There are a few isolated outliers in the central highlands of Arizona (Fort Apache Indian Reservation).
Nations: MX,US
States/Provinces: AZ, MXCHH, MXSON, NM
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686560
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3
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.2 Chihuahuan Pine - Douglas-fir / Silverleaf Oak Madrean Montane Forest & Woodland Macrogroup | M011 | 1.B.1.Nd.2 |
| Group | 1.B.1.Nd.2.a Apache Pine - Chihuahuan Pine - Arizona Pine Forest & Woodland Group | G203 | 1.B.1.Nd.2.a |
| Alliance | A3112 Arizona Pine - Apache Pine - Chihuahuan Pine Woodland Alliance | A3112 | 1.B.1.Nd.2.a |
| Association | CEGL000824 Chihuahuan Pine / Silverleaf Oak Woodland | CEGL000824 | 1.B.1.Nd.2.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pinus leiophylla / Quercus hypoleucoides (Stuever and Hayden 1997a)
= Pinus leiophylla / Quercus hypoleucoides Habitat Type (Muldavin et al. 1987)
= Pinus leiophylla / Quercus hypoleucoides Habitat Type (Muldavin et al. 1996)
= Pinus leiophylla / Quercus hypoleucoides PA (Bourgeron et al. 1993b)
= Pinus leiophylla / Quercus hypoleucoides PA (Muldavin et al. 1998a)
= Pinus leiophylla / Quercus hypoleucoides Habitat Type (Muldavin et al. 1987)
= Pinus leiophylla / Quercus hypoleucoides Habitat Type (Muldavin et al. 1996)
= Pinus leiophylla / Quercus hypoleucoides PA (Bourgeron et al. 1993b)
= Pinus leiophylla / Quercus hypoleucoides PA (Muldavin et al. 1998a)
- 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., 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. 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.
- Muldavin, E., R. DeVelice, and W. Dick-Peddie. 1987. Forest habitat types of the Prescott, Tonto and western Coronado national forests, Arizona. Unpublished final report prepared for Rocky Mountain Forest and Range Experiment Station, CO. 71 pp.
- 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.
- Niering, W. A., and C. H. Lowe. 1984. Vegetation of the Santa Catalina Mountains: Community types and dynamics. Vegetatio 58:3-28.
- 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.
- 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.