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CEGL000796 Pinus edulis / Achnatherum nelsonii ssp. dorei Open Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon / Dore''s Needlegrass Open Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: No Data Available
Diagnostic Characteristics: Pinus edulis dominates the overstory and grasses dominant the understory. Festuca arizonica is absent. Achnatherum nelsonii ssp. dorei or Achnatherum scribneri are common to well-represented. A distinct litter layer is also usually present.
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: No Data Available
Dynamics: Relatively frequent, light surface fires may maintain the needlegrass understory (Kennedy 1983b). Where grasses are abundant, fine fuels are capable of supporting rapid fire spread. Achnatherum nelsonii ssp. dorei is generally more resistant to fires than other needlegrasses and may be only slightly or moderately damaged by fire. Midsummer fires may be more damaging to the needlegrass in the understory than early spring or late fall fires. Recovery of the needlegrass following a burn may be slow, up to 3-5 years (Tirmenstein 1987c). Annual grasses may also dominate following burns (Arnold et al. 1964).
Environmental Description: Occurs on moderate to gentle slopes, 6,200’ to 7,300’ (1890 - 2225 m). Generally not found on rocky sites.
Geographic Range: This open woodland is known from the Sacramento Mountains, Jicarilla Mountains, White Sands Missile Range, and Rowe Mesa (Pecos Ranger District, Santa Fe National Forest), New Mexico.
Nations: US
States/Provinces: NM
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686575
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G4
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.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Nc Western North American Pinyon - Juniper Woodland & Scrub Division | D010 | 1.B.2.Nc |
| Macrogroup | 1.B.2.Nc.2 Two-needle Pinyon - One-seed Juniper Southern Rocky Mountain Woodland Macrogroup | M897 | 1.B.2.Nc.2 |
| Group | 1.B.2.Nc.2.c Two-needle Pinyon - One-seed Juniper - Rocky Mountain Juniper Woodland Group | G253 | 1.B.2.Nc.2.c |
| Alliance | A3577 Two-needle Pinyon - One-seed Juniper Grassy Woodland Alliance | A3577 | 1.B.2.Nc.2.c |
| Association | CEGL000796 Two-needle Pinyon / Dore''s Needlegrass Open Woodland | CEGL000796 | 1.B.2.Nc.2.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pinus edulis - Juniperus monosperma / Stipa columbiana (Kennedy 1983b)
? Pinus edulis / Stipa columbiana Habitat Type (Larson and Moir 1987)
= Pinus edulis / Stipa nelsonii var. dorei (Stuever and Hayden 1997b)
? Pinus edulis / Stipa columbiana Habitat Type (Larson and Moir 1987)
= Pinus edulis / Stipa nelsonii var. dorei (Stuever and Hayden 1997b)
- Arnold, J. F., D. A. Jameson, and E. H. Reid. 1964. The pinyon/juniper type of Arizona: Effects of grazing, fire, and tree control. Production Research Report No. 84. USDA Forest Service.
- 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.
- Edwards, M. C., G. Miller, J. Redders, R. Stein, and K. Dunstan. 1987. Terrestrial ecosystem survey for the Carson National Forest. USDA Forest Service, Southwestern Region, Albuquerque, NM. 552 pp.
- Erdman, J. A., C. L. Douglas, and J. W. Marr. 1969. Wetherill Mesa Studies, environment of Mesa Verde, Colorado. USDI National Park Service. Archeological Research Series 7-B. Washington, DC. 72 pp.
- Johnston, B. C. 1987. Plant associations of Region Two: Potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas. R2-ECOL-87-2. USDA Forest Service, Rocky Mountain Region. Lakewood, CO. 429 pp.
- Kennedy, K. L. 1983a. A habitat-type classification for the pinyon-juniper woodlands of the Lincoln National Forest. Unpublished thesis, New Mexico State University, Las Cruces. 87 pp.
- Kennedy, K. L. 1983b. A habitat type classification of the pinyon-juniper woodlands of the Lincoln National Forest, New Mexico. Pages 54-61 in: W. H. Moir and L. Hendzel, technical coordinators. Proceedings of the workshop on southwestern habitat types, April 6-8, 1983, Albuquerque, New Mexico. USDA Forest Service Southwestern Region, Albuquerque, NM. 110 pp.
- Larson, M., and W. H. Moir. 1987. Forest and woodland habitat types of northern New Mexico and northern Arizona. Edition 2. USDA Forest Service, Southwestern Region, Albuquerque, NM.
- Moir, W. H., and J. O. Carleton. 1987. Classification of pinyon-juniper (P-J) sites on national forests in the Southwest. Pages 216-226 in: R. L. Everett, editor. Proceedings of the Pinyon-Juniper Conference, Reno, NV, 13-16 January 1986. General Technical Report. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 581 pp.
- Stuever, M. C., and J. S. Hayden. 1997b. Plant associations of Arizona and New Mexico. Volume 2: Woodlands. USDA Forest Service, Southwestern Region, Habitat Typing Guides. 196 pp.
- Tirmenstein, D. 1987c. Stipa columbiana. In: Fire Effects Information System [Online]. USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). [http://www.fs.fed.us/database/feis/]
- USFS [U.S. Forest Service]. 1987a. Forest and woodland habitat types (plant associations) of northern New Mexico and northern Arizona. USDA Forest Service, Southwestern Region, Albuquerque, NM. Second edition, 170 pp. plus insert.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.