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CEGL001733 Gutierrezia sarothrae - Krascheninnikovia lanata - Atriplex canescens / Bouteloua eriopoda Shrub Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Broom Snakeweed - Winterfat - Fourwing Saltbush / Black Grama Shrub Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is a grassland with shrubs and dwarf-shrubs. Total vegetation ground cover is 15-30%. The grasses tend to occur in patches where pockets of silty loam derived from Kaibab limestone have accumulated. Characteristic species include Bouteloua eriopoda, Gutierrezia sarothrae, Krascheninnikovia lanata, Atriplex canescens, and Sphaeralcea sp. Other associated species are Aristida purpurea var. fendleriana, Coleogyne ramosissima, Pleuraphis rigida, Scleropogon brevifolius, Lycium andersonii, Achnatherum hymenoides, and Dasyochloa pulchella. Found on
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association needs to be reviewed against several new Grand Canyon types. It probably should be archived.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Total vegetation ground cover is 15-30%. Characteristic species include Bouteloua eriopoda, Gutierrezia sarothrae, Krascheninnikovia lanata, Atriplex canescens, and Sphaeralcea sp. Other associated species are Aristida purpurea var. fendleriana, Coleogyne ramosissima, Pleuraphis rigida (= Hilaria rigida), Scleropogon brevifolius, Lycium andersonii, Achnatherum hymenoides (= Oryzopsis hymenoides), and Dasyochloa pulchella (= Erioneuron pulchellum).
Dynamics: No Data Available
Environmental Description: This association is only found on the top of the Grand Wash Cliffs (elevation 1430-1580 m) where pockets of silty loam derived from Kaibab limestone have accumulated on level swales.
Geographic Range: This association is only found on the top of the Grand Wash Cliffs (elevation 1430-1580 m) in the southwestern Grand Canyon National Park where pockets of soil have accumulated on level swales. Level areas are rare at this elevation. Further inventory may locate additional sites outside the park, especially on the Hualapi Indian Reservation.
Nations: US
States/Provinces: AZ
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689302
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.1 Yellow Rabbitbrush - Blackbrush / Indian Ricegrass Dry Shrubland & Grassland Macrogroup | M171 | 3.B.1.Ne.1 |
| Group | 3.B.1.Ne.1.d Yellow Rabbitbrush - Rubber Rabbitbrush - Winterfat Steppe & Shrubland Group | G310 | 3.B.1.Ne.1.d |
| Alliance | A3203 Broom Snakeweed - Threadleaf Snakeweed Dwarf-shrubland Alliance | A3203 | 3.B.1.Ne.1.d |
| Association | CEGL001733 Broom Snakeweed - Winterfat - Fourwing Saltbush / Black Grama Shrub Grassland | CEGL001733 | 3.B.1.Ne.1.d |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Gutierrezia sarothrae - Krascheninnikovia lanata - Atriplex canescens / Bouteloua eriopoda Association (Warren et al. 1982)
- 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.
- Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
- Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
- Warren, P. L., K. L. Reichhardt, D. A. Mouat, B. T. Brown, and R. R. Johnson. 1982. Vegetation of Grand Canyon National Park. Cooperative National Park Resources Studies Unit Technical Report 9. Tucson, AZ. 140 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.