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CEGL003147 Populus tremuloides - Pinus jeffreyi Riparian Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Quaking Aspen - Jeffrey Pine Riparian Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association is found on seasonally saturated soils on gentle to moderate lower slopes within or adjacent to narrow stream floodplains. Stands can occur on all aspects. This association seems to be confined to a fairly narrow elevation band, between 2130 and 2440 m (7000-8000 feet). Soils are usually well-drained loams and loamy sands. This forest forms a canopy between 10 and 35 m tall. Pinus jeffreyi dominates along with Populus tremuloides. Emergent individuals of Pinus jeffreyi are common. The shrub canopy is fairly sparse. Artemisia tridentata is present in nearly all stands. Rosa woodsii, Symphoricarpos rotundifolius, and Cercocarpus ledifolius are usually present. The herbaceous layer is sparse but diverse. The most common forbs include Allium campanulatum, Descurainia californica, Osmorhiza berteroi, and/or Phacelia ramosissima. Several graminoid species may be present including Leymus cinereus, Bromus laevipes, Bromus tectorum, Poa pratensis, Elymus elymoides, and/or Elymus glaucus.

Diagnostic Characteristics: No Data Available

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:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This forest association is currently only known from Yosemite National Park in California. Additional range information will be added as it becomes available.

Nations: US

States/Provinces:  CA




Confidence Level: Moderate

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Populus tremuloides - Pinus jeffreyi Forest (Keeler-Wolf 2002)
= Populus tremuloides - Pinus jeffreyi Forest (Keeler-Wolf et al. 2012)
= Populus tremuloides / Pinus jeffreyi (Sawyer et al. 2009) [61.111.09]

Concept Author(s): T. Keeler-Wolf (2002)

Author of Description: T. Keeler-Wolf

Acknowledgements: No Data Available

Version Date: 05-06-10

  • Keeler-Wolf, T. 2002. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. NatureServe in cooperation with the California Native Plant Society and California Natural Heritage Program, Wildlife and Habitat Data Analysis Branch, California Department of Fish and Game, Sacramento, CA. August 2002.
  • Keeler-Wolf, T., M. Schindel, S. San, P. Moore, and D. Hickson. 2003a. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. Unpublished report by NatureServe in cooperation with the California Native Plant Society and California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch, Sacramento, CA.
  • Keeler-Wolf, T., P. E. Moore, E. T. Reyes, J. M. Menke, D. N. Johnson, and D. L. Karavidas. 2012. Yosemite National Park vegetation classification and mapping project report. Natural Resource Technical Report NPS/YOSE/NRTR--2012/598. National Park Service, Fort Collins, CO.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.