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CEGL000774 Pinus edulis / Andropogon hallii Open Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon / Sand Bluestem Open Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland association occurs locally in the landscape in central and northern New Mexico, where it occurs on valley plains with deep sandy soils. The typical soil is a Typic Ustipsamments. The tree layer is well-represented and dominated by Pinus edulis with Juniperus monosperma also present. The understory may be grassy with Andropogon hallii and/or Muhlenbergia pungens common to abundant. Other common species present in the herbaceous layer are Schizachyrium scoparium, Bouteloua gracilis, Sporobolus cryptandrus, Sporobolus contractus, Achnatherum hymenoides and Erysimum repandum. The shrub layer is often well-represented and includes Artemisia filifolia, Artemisia tridentata, Yucca elata, Rhus trilobata and Chrysothamnus spp. No phases have been described for this association. Where Andropogon hallii grows in large patches, upland birds and small mammals find good environmental protection. Its extensive system of roots and rhizomes do a good job of stabilizing sandy soils.
Diagnostic Characteristics: The pinyon-juniper overstory occurs on sandy soils. The understory may be grassy and Andropogon hallii and/or Muhlenbergia pungens are common to abundant; or if the understory is shrubby, a dominant shrub is Artemisia filifolia.
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 tree layer is well-represented and dominated by Pinus edulis with Juniperus monosperma also present. The understory may be grassy with Andropogon hallii and/or Muhlenbergia pungens common to abundant. Other common species present in the herbaceous layer are Schizachyrium scoparium, Bouteloua gracilis, Sporobolus cryptandrus, Sporobolus contractus, Achnatherum hymenoides (= Oryzopsis hymenoides), and Erysimum repandum. The shrub layer is often well-represented and includes Artemisia filifolia, Artemisia tridentata, Yucca elata, Rhus trilobata and Chrysothamnus spp. No phases have been described for this association.
Dynamics: Where Andropogon hallii grows in large patches, upland birds and small mammals find good environmental protection. Its extensive system of roots and rhizomes do a good job of stabilizing sandy soils.
Environmental Description: It occurs on valley plains with deep sandy soils. The typical soil is a Typic Ustipsamments.
Geographic Range: This woodland association occurs locally in central and northern New Mexico.
Nations: US
States/Provinces: NM
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.684970
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.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 | CEGL000774 Two-needle Pinyon / Sand Bluestem Open Woodland | CEGL000774 | 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 / Andropogon hallii (Stuever and Hayden 1997b)
- 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.
- 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.
- 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.
- Uchytil, R. J. 1988a. Andropogon gerardii var. paucipilus. In: Fire Effects Information System [Online]. USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). [http://www.fs.fed.us/database/feis/]
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.