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CEGL000801 Pinus engelmannii / Quercus hypoleucoides Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Apache 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 southern Arizona and northern Mexico. This association may also occur in the Animas Mountains of New Mexico. In the U.S., it is known only from the Santa Rita and Chiricahua mountains, but it may be more prevalent in Mexico. This association occurs on moderate to steep slopes of northerly aspects or on benches. Elevations range from 1770-2165 m (5800-7100 feet). Soils are predominantly skeletal Ustochrepts. Generally, sites are warm and dry. The vegetation is characterized by open stands of Pinus engelmannii with Pinus leiophylla as an occasional codominant. Quercus hypoleucoides dominates the subcanopy and shrub layer; Quercus arizonica is common, but never dominant. Other shrubs may include Arbutus arizonica and Garrya wrightii. Muhlenbergia longiligula is well-represented and dominates the herb layer, which is otherwise diverse, variable, and sparse.
Diagnostic Characteristics: Pinus engelmannii and Quercus hypoleucoides are present. There is also a rich diversity of tree species, including Pinus leiophylla, Pinus arizonica, Pinus ponderosa, Pinus strobiformis, and occasionally Pseudotsuga menziesii.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Limited number of plots in U.S. and none in Mexico.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The vegetation is characterized by open stands of Pinus engelmannii with Pinus leiophylla as an occasional codominant. Quercus hypoleucoides dominates the subcanopy and shrub layer; Quercus arizonica is common, but never dominant. Other shrubs may include Arbutus arizonica and Garrya wrightii. Muhlenbergia longiligula is well-represented and dominates the herb layer, which is otherwise diverse, variable, and sparse.
Dynamics: Mature Pinus engelmannii are generally fire-resistant. Seedlings and saplings may be killed by fire. Oaks resprout following most fires. Swetnam et al. (1989, 1992) report historic fire intervals between 1 and 38 years in Rhyolite Canyon in the Chiricahua Mountains.
Environmental Description: This association occurs on moderate to steep slopes of northerly aspects or on benches. Elevations range from 1770-2165 m (5800-7100 feet). Soils are predominantly skeletal Ustochrepts. Generally, sites are warm and dry.
Geographic Range: This highly diverse "Madrean" woodland association is restricted to the isolated "sky island" mountain ranges of southern Arizona and northern Mexico. This association may also occur in the Animas Mountains of New Mexico. In the U.S., it is known only from the Santa Rita and Chiricahua mountains, but it may be more prevalent in Mexico.
Nations: MX,US
States/Provinces: AZ, MXSON, NM?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689680
Confidence Level: Moderate
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 | CEGL000801 Apache Pine / Silverleaf Oak Woodland | CEGL000801 | 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 engelmannii / Quercus hypoleucoides (Stuever and Hayden 1997a)
= Pinus engelmannii / Quercus hypoleucoides Habitat Type (Muldavin et al. 1996)
= Pinus engelmannii / Quercus hypoleucoides Habitat Type (Muldavin et al. 1987)
= Pinus engelmannii / Quercus hypoleucoides Habitat Type (Muldavin et al. 1996)
= Pinus engelmannii / Quercus hypoleucoides Habitat Type (Muldavin et al. 1987)
- 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.
- 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.
- Pavek, D. S. 1994e. Pinus engelmanni. In: Fire Effects Information System [Online]. USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). [http://www.fs.fed.us/database/feis/] (accessed 31 August 2015).
- 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.
- Swetnam, T. W., C. H. Baisain, A. C. Caprio, and P. M. Brown. 1992. Fire history in a Mexican oak-pine woodland and adjacent montane conifer gallery forest in southeastern Arizona. Pages 165-173 in: P. F. Ffolliott, G. J. Gottfried, D. A. Bennett, V. M. Hernandez C., A. Ortega-Rubio, and R. H. Hamre, technical coordinators. Ecology and management of oak and associated woodlands: Perspectives in the southwestern United States and northern Mexico. Proceedings; 1992 April 27-30; Sierra Vista, AZ. General Technical Report RM-218. USDA Forest Service, Rocky Mountain and Range Experiment Station, Fort Collins, CO.
- Swetnam, T. W., C. H. Baisan, P. M. C. Brown, and A. Caprio. 1989. Fire history of Rhyolite Canyon, Chiricahua National Monument. Technical Report No. 32. USDI National Park Service, Cooperative Studies Unit, Tucson, AZ.
- 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.