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Abies magnifica - Abies lowiana - Pinus jeffreyi Sierran Montane Chaparral Forest | NatureServe Biotics 2019
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Name: Abies magnifica - Abies lowiana - Pinus jeffreyi Sierran Montane Chaparral Forest Reference: NatureServe Biotics 2019 Description: This forest is widespread at middle to lower elevations in the central and southern Sierra Nevada, California, at elevations generally between 1983 and 2440 m (6500-8000 feet). Aspects are variable, but a significant portion lie on southern slopes where solar radiation levels are significantly higher than most other sites. Stands are usually on upper slopes and some ridgetops. Slope angles are moderate to somewhat steep. Stand size is usually small, often covering less than an acre on small rock outcrops, but sometimes covering more that 50 acres. Sites have significantly less surface gravel and a deeper litter layer than drier sites commonly encountered. Soils are typically well-drained sandy loams and usually formed in place on granitic bedrock, but often form on alluvium, colluvium or glacial tills and outwash. In general, soils are deeper than most other sites. The average water-holding capacity is one of the highest in the upper montane of the Sierra Nevada. These are moderately dense forested stands with light understory vegetation. Overstory layers are distinguished by the presence of <i>Abies lowiana</i> and <i>Pinus jeffreyi</i>, in a mix with <i>Abies lowiana</i>. Understories are somewhat sparse. Occasionally <i>Chrysolepis sempervirens</i> can become a major component in the shrub layer and dominate understories, but in most cases shrubs occur as scattered patches and individuals. The herb layer most often contains <i>Pedicularis semibarbata, Kelloggia galioides, Hieracium albiflorum, Viola purpurea</i>, and <i>Pyrola picta</i>, although none of these are frequent. An important element in these understories is the presence of several shrub and forb species that occur at low frequency but can dominate sites in early-successional sequences. In the shrub layer, these are <i>Ceanothus cordulatus, Prunus emarginata, Arctostaphylos patula</i>, and <i>Chrysolepis sempervirens</i>. In the herb layer, they include <i>Pteridium aquilinum, Lupinus adsurgens, Lupinus andersonii</i>, and <i>Achnatherum lemmonii</i>.  Accession Code: urn:lsid:vegbank.org:commConcept:36721-{405BFFE5-BD5D-45E2-BF9B-A7C30939AFF2} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 15-Jul-2002 to: ongoing
	status: accepted Community's Parent: Abies lowiana - Abies magnifica var. magnifica - Abies magnifica var. shastensis Forest Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.683457 NatureServe Explorer   Code: CEGL008682   Translated: California Red Fir - Sierra White Fir - Jeffrey Pine Sierran Montane Chaparral Forest   Scientific: Abies magnifica - Abies lowiana - Pinus jeffreyi Sierran Montane Chaparral Forest (convergence) and Synonyms: (similar) Abies magnifica - Abies concolor - Pinus jeffreyi Sierran Montane Chaparral Forest (similar) Abies magnifica - Abies concolor - Pinus jeffreyi Sierran Montane Chaparral Forest