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CEGL008668 Pinus contorta var. murrayana / Ledum glandulosum Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Sierra Lodgepole Pine / Western Labrador-tea 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 along small streams and on the edges of meadows, or on slightly higher elevations in meadows, from approximately 2350 to 2740 m (7700-9000 feet) in elevation on flat to gentle slopes of variable aspects. Microtopography is sometimes hummocky with Ledum and pines growing on slightly elevated portions of more saturated surrounding terrain. Soil textures range from silty loam of granitic origin to muck. Soils are somewhat poorly drained to poorly drained. Litter/duff cover ranges from 20-95%. Sites are palustrine. The tree layer is composed almost solely of Pinus contorta var. murrayana, averaging 15-20 m in height and about 20% cover. Ledum glandulosum provides an average of 47% cover in the shrub layer, which is generally 0.5-1 m. Other (sub)shrubs include Spiraea splendens var. splendens, Vaccinium uliginosum, and Kalmia polifolia; Pinus contorta var. murrayana saplings are also present in the shrub layer. The herb layer is variable, with Chamerion angustifolium, Perideridia parishii, Calamagrostis canadensis, Deschampsia cespitosa, and Carex utriculata providing most of the cover in this layer. There are another 62, mostly wetland meadow species included in the plot summaries, but most of them average only trace cover.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Taylor (1984) describes this association as the most mesic of the three Pinus contorta associations he defined from the Hall RNA.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The tree layer is composed almost solely of Pinus contorta var. murrayana, averaging 15-20 m in height and about 20% cover. Ledum glandulosum provides an average of 47% cover in the shrub layer, which is generally 0.5-1 m. Other (sub)shrubs include Spiraea splendens var. splendens, Vaccinium uliginosum, and Kalmia polifolia; Pinus contorta var. murrayana saplings are also present in the shrub layer. The herb layer is variable, with Chamerion angustifolium (= Epilobium angustifolium), Perideridia parishii, Calamagrostis canadensis, Deschampsia cespitosa, and Carex utriculata providing most of the cover in this layer. There are another 62, mostly wetland meadow species included in the plot summaries, but most of them average only trace cover.
Dynamics: No Data Available
Environmental Description: This association is found along small streams and on the edges of meadows, or on slightly higher elevations in meadows, from approximately 2350 to 2740 m (7700-9000 feet) in elevation on flat to gentle slopes of variable aspects. Microtopography is sometimes hummocky with Ledum and pines growing on slightly elevated portions of more saturated surrounding terrain. Soil textures range from silty loam of granitic origin to muck. Soils are somewhat poorly drained to poorly drained. Litter/duff cover ranges from 20-95%. Sites are palustrine.
Geographic Range: Although the alliance is widespread in the upper montane and subalpine zone of most major mountain ranges of the western U.S., this association has only been described from Yosemite National Park. Taylor (1984) originally described it for the Hall Research Natural Area, within the environs of the study area. Information about its global characteristics is not available without additional inventory.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686290
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.Ng Vancouverian Flooded & Swamp Forest Division | D193 | 1.B.3.Ng |
| Macrogroup | 1.B.3.Ng.1 Vancouverian Flooded & Swamp Forest Macrogroup | M035 | 1.B.3.Ng.1 |
| Group | 1.B.3.Ng.1.e Western Hemlock - Red Alder / Yellow Skunk-cabbage Swamp Forest Group | G853 | 1.B.3.Ng.1.e |
| Alliance | A3755 Lodgepole Pine Swamp Forest Alliance | A3755 | 1.B.3.Ng.1.e |
| Association | CEGL008668 Sierra Lodgepole Pine / Western Labrador-tea Forest | CEGL008668 | 1.B.3.Ng.1.e |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pinus contorta ssp. murrayana / Rhododendron neoglandulosum (Sawyer et al. 2009) [87.080.08]
= Pinus contorta var. murrayana / Ledum glandulosum Forest (Keeler-Wolf 2002)
= Pinus contorta var. murrayana/Ledum glandulosum Forest (Keeler-Wolf et al. 2012)
= Pinus contorta var. murrayana / Ledum glandulosum Forest (Keeler-Wolf 2002)
= Pinus contorta var. murrayana/Ledum glandulosum Forest (Keeler-Wolf et al. 2012)
- 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.
- Taylor, D. W. 1984. Vegetation of the Harvey Monroe Hall Research Natural Area, Inyo National Forest, California. Unpublished report. USDA Forest Service, Pacific Southwest Research Station, Berkeley, CA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.