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CEGL008620 Populus balsamifera ssp. trichocarpa - Pinus jeffreyi Riparian Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Black Cottonwood - 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 forest grows between 2100 and 2370 m (6900-7780 feet) elevation on gentle to moderate slopes with southerly to southeasterly exposures. Stands are found in valley bottoms along streams, or occasionally midslopes with soils that are seasonally or permanently flooded. Soils are sands to silty loams derived from igneous rock and may be moderately well-drained to well-drained. This forest is characterized by a broken tall canopy of Pinus jeffreyi that may reach 35-50 m, but is more regularly 15-20 m tall. Dominance is shared between Populus balsamifera and Pinus jeffreyi in a fairly continuous canopy. Populus tremuloides is also regularly present. Individuals of Abies lowiana are also present, and Juniperus occidentalis may also be present in low cover. Occasionally Pinus jeffreyi may also be present as trees or saplings. The shrub layer is dominated by Rosa woodsii along with Artemisia tridentata and /or Symphoricarpos rotundifolius. The ground layer is dominated by graminoids. Most stands contain Poa pratensis and Elymus elymoides. The herbaceous layer is sparse but relatively diverse. Wyethia mollis, Allium bisceptrum, Calochortus superbus, Iris missouriensis, and/or Maianthemum stellatum all occur at low cover.
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: This forest is characterized by a broken tall canopy of Pinus jeffreyi that may reach 35-50 m, but is more regularly 15-20 m tall. Dominance is shared between Populus balsamifera and Pinus jeffreyi in a fairly continuous canopy. Populus tremuloides is also regularly present. Individuals of Abies lowiana (= Abies concolor var. lowiana) are also present, and Juniperus occidentalis may also be present in low cover. Occasionally Pinus jeffreyi may also be present as trees or saplings. The shrub layer is dominated by Rosa woodsii along with Artemisia tridentata and /or Symphoricarpos rotundifolius. The ground layer is dominated by graminoids. Most stands contain Poa pratensis and Elymus elymoides. The herbaceous layer is sparse but relatively diverse. Wyethia mollis, Allium bisceptrum, Calochortus superbus, Iris missouriensis, and/or Maianthemum stellatum all occur at low cover.
Dynamics: No Data Available
Environmental Description: This forest grows between 2100 and 2370 m (6900-7780 feet) elevation on gentle to moderate slopes with southerly to southeasterly exposures. Stands are found in valley bottoms along streams, or occasionally midslopes with soils that are seasonally or permanently flooded. Soils are sands to silty loams derived from igneous rock and may be moderately well-drained to well-drained.
Geographic Range: This association is only known from the vicinity of Yosemite National Park. Information about its global range is not available without additional inventory.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689682
Confidence Level: Low
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.3 Temperate Flooded & Swamp Forest Formation | F026 | 1.B.3 |
| Division | 1.B.3.Nc Rocky Mountain-Great Basin Montane Flooded & Swamp Forest Division | D195 | 1.B.3.Nc |
| Macrogroup | 1.B.3.Nc.1 Engelmann Spruce - Narrowleaf Cottonwood / Red-osier Dogwood Riparian & Swamp Forest Macrogroup | M034 | 1.B.3.Nc.1 |
| Group | 1.B.3.Nc.1.c Northern Rocky Mountain Lowland-Foothill Riparian Forest Group | G796 | 1.B.3.Nc.1.c |
| Alliance | A0311 Black Cottonwood Northern Rocky Mountain Riparian Forest Alliance | A0311 | 1.B.3.Nc.1.c |
| Association | CEGL008620 Black Cottonwood - Jeffrey Pine Riparian Forest | CEGL008620 | 1.B.3.Nc.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Populus balsamifera ssp. trichocarpa - Pinus jeffreyi Forest (Keeler-Wolf 2002)
= Populus balsamifera ssp. trichocarpa - Pinus jeffreyi Forest [Provisional] (Keeler-Wolf et al. 2012)
= Populus trichocarpa - Pinus jeffreyi (Sawyer et al. 2009) [61.120.03]
= Populus balsamifera ssp. trichocarpa - Pinus jeffreyi Forest [Provisional] (Keeler-Wolf et al. 2012)
= Populus trichocarpa - Pinus jeffreyi (Sawyer et al. 2009) [61.120.03]
- 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.