International ecological classification standard: Terrestrial Ecological Classifications Sagebrush Vegetation Classification for the Western United States: Plant Associations and Alliances
A.2549–Artemisia arbuscula ssp. longiloba Shrubland Alliance
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- CEGL001414– Artemisia arbuscula ssp. longiloba Shrubland
- A.813– Artemisia californica - Eriogonum fasciculatum Shrubland Alliance
- CEGL003011– Artemisia californica - Eriogonum fasciculatum Shrubland [Placeholder]
- A.814– Artemisia californica - Salvia mellifera Shrubland Alliance
- CEGL003012– Artemisia californica - Salvia mellifera Shrubland [Placeholder]
- A.815– Artemisia californica Shrubland Alliance
- CEGL003013– Artemisia californica Shrubland [Placeholder]
A.2549–Artemisia arbuscula ssp. longiloba Shrubland AllianceAlkali Sagebrush Shrubland Alliance Stakeholders: West Classif. Resp.: West ALLIANCE CONCEPT Summary: The Artemisia arbuscula ssp. longiloba Shrubland Alliance (A.2549) occurs in Nevada, but is likely fairly widespread in the Intermountain West, the southern Rocky Mountains and in the western Great Plains. Stands are found on a variety of landforms; from flats and depressions to alluvial fans and hillslopes and ridges. Soils are generally characterized by a heavy clay subsoil occurring within 25 cm of the soil surface, which restricts rooting depth. Soils are also alkali and calcareous. Little information is available on vegetation included in this alliance except that it is dominated by a low-shrub layer of Artemisia arbuscula ssp. longiloba. Shrub associates are not specified, but presumably include Artemisia tridentata, Artemisia tripartita, Chrysothamnus viscidiflorus, Gutierrezia sarothrae, and Purshia tridentata. The herbaceous layer is generally sparse. Various perennial graminoids may be present, but with low cover (<20% cover). Important grasses include Festuca idahoensis, Pseudoroegneria spicata, Elymus elymoides, and Poa secunda. Forb cover is likely sparse. Diagnostic of this alliance is the Artemisia arbuscula ssp. longiloba-dominated low-shrub layer (or codominated with >40% relative shrub cover of the nominal species) and lacks a significant graminoid layer (<20% cover perennial graminoids) or has over 40% total shrub cover. Classification Comments: Stands included in this alliance occur in environments (climate or substrates) that limit the growth of perennial graminoids or may be the result of heavy livestock grazing depleting the perennial graminoid layer of stands of Artemisia arbuscula ssp. longiloba Shrub Herbaceous Alliance (A.2552). The range of this association is currently restricted to Nevada. More survey and classification work is needed to fully describe the range of this alliance. Internal Comments: Similar Alliances: Artemisia arbuscula ssp. arbuscula Shrub Herbaceous Alliance (A.1566) Artemisia arbuscula ssp. arbuscula Shrubland Alliance (A.2547) Artemisia arbuscula ssp. longicaulis Shrubland Alliance (A.2548) Artemisia arbuscula ssp. longiloba Shrub Herbaceous Alliance (A.2552) Artemisia arbuscula ssp. thermopola Shrub Herbaceous Alliance (A.2553) Artemisia tridentata ssp. wyomingensis Shrubland Alliance (A.832) Similar Alliance Comments: This alliance is distinguished from vegetation in other Artemisia arbuscula alliances by the nominal subspecies of Artemisia arbuscula and by the lack of a significant perennial graminoid layer (<20% cover) in the shrubland alliances. The Artemisia arbuscula subspecies are distinguished by the nominal subspecies taxonomically and by different environments which they occupy. The Artemisia arbuscula ssp. longiloba Shrub Herbaceous Alliance (A.2552) occurs in more alkali and less stony settings than the Artemisia arbuscula ssp. arbuscula Shrubland Alliance (A.2547). Artemisia arbuscula ssp. thermopola Shrub Herbaceous Alliance (A.2553) occurs in more calcareous soils and has a restricted distribution. Beetle and Johnson (1982) report that Artemisia arbuscula ssp. arbuscula grows in soils with a high volume of gravel (even though soil may be in clay textural class, or contain a clay-rich layer that impedes drainage), and that Artemisia arbuscula ssp. longiloba grows in clay soils, often alkaline, that contain no gravels. Related Concepts: SRM Cover Type #406 - Low Sagebrush (Shiflet 1994) B ALLIANCE DESCRIPTION Environment: This alliance is found in Nevada, but is likely fairly widespread in the Intermountain West, into the southern Rocky Mountains and in the western Great Plains. Climate is semi-arid with a large proportion of the precipitation falling as winter snow. Soils are generally shallow, characterized by a heavy clay subsoil occurring within 25 cm of the soil surface, which restricts rooting depth. Soils are also alkaline and calcareous. Beetle and Johnson (1982) report that Artemisia arbuscula ssp. arbuscula grows in soils with a high volume of gravel (even though soil may be in clay textural class, or contain a clay-rich layer that impedes drainage), and that Artemisia arbuscula ssp. longiloba grows in clay soils, often alkaline, that contain no gravels. Vegetation: This shrubland alliance occurs in the Great Basin and likely elsewhere in the western U.S. Little information is available on vegetation included in this alliance except that it is dominated by a low-shrub layer of Artemisia arbuscula ssp. longiloba. Shrub associates are not specified, but presumably include Artemisia tridentata ssp. wyomingensis or Artemisia tridentata ssp. vaseyana, Artemisia tripartita, Chrysothamnus viscidiflorus, Gutierrezia sarothrae, and Purshia tridentata. The herbaceous layer is generally sparse. Various perennial graminoids may be present, but with low cover (<20% cover). Common grasses may include Achnatherum hymenoides (= Oryzopsis hymenoides), Danthonia parryi, Elymus elymoides, Festuca idahoensis, Festuca thurberi, Hesperostipa comata (= Stipa comata), Koeleria macrantha, or Pseudoroegneria spicata. Forb cover is likely sparse. Diagnostic of this alliance is the Artemisia arbuscula ssp. longiloba-dominated low-shrub layer (or codominated with >40% relative shrub cover of the nominal species) and lacks a significant graminoid layer (<20% cover perennial graminoids) or has over 40% total shrub cover. Dynamics: Due to the low-shrub stature of Artemisia arbuscula ssp. longiloba and the moist nature of the sites, this shrubland alliance is less susceptible to natural fire than taller Artemisia spp. shrublands. Grazing appears to have little effect on shrub densities, but tends to decrease the importance of tall bunch grasses and increase the cover of Arenaria congesta (Johnston 2001). ALLIANCE DISTRIBUTION Range: This alliance occurs in Nevada, but is likely fairly widespread in the western United States within the distributional range of Artemisia arbuscula ssp. longiloba. Nations: US Subnations: NV TNC Ecoregions: 6:C, 11:C USFS Ecoregions: 331H:??, 331I:??, 332E:??, 341:C, 342B:CC, 342C:C? Federal Lands: ALLIANCE SOURCES References: Beetle and Johnson 1982, Cooper et al. 1999, Hironaka et al. 1983, Jensen et al. 1992, Johnston 2001, Lewis 1975a, Schlatterer 1972, Shiflet 1994 CEGL001414–Artemisia arbuscula ssp. longiloba ShrublandAlkali Sagebrush Shrubland Classif. Resp.: West Classif. Level: Association Conf.: 3 - Weak Stakeholders: West Status: Standard Origin: 26-Nov-1997 Concept Auth.: Concept Ref.: Western Ecology Working Group n.d. Ecological Systems: Great Basin Xeric Mixed Sagebrush Shrubland (CES304.774) Columbia Plateau Low Sagebrush Steppe (CES304.080) ELEMENT CONCEPT Summary: Classification Comments: Similar Associations: Similar Association Comments: Related Concepts: Artemisia longiloba (Bourgeron and Engelking 1994) = DRISCOLL FORMATION CODE:IV.A.3.a. (Driscoll et al. 1984) B ELEMENT DESCRIPTION Environment: Vegetation: Dynamics: Adjacent Associations: Adjacent Association Comments: Other Comments: Description Author: Version: ELEMENT GLOBAL RANK & REASONS GRank: G4G5 GRank Review Date: 23-Feb-1994 GReasons: Ranking Author: Version: ELEMENT DISTRIBUTION Range: Nations: US Subnations: NV:S4S5 TNC Ecoregions: 6:C, 11:C USFS Ecoregions: 341:C, 342B:CC Federal Lands: ELEMENT SOURCES References: Bourgeron and Engelking 1994, Driscoll et al. 1984, Lewis 1975a, Western Ecology Working Group n.d. A.813–Artemisia californica - Eriogonum fasciculatum Shrubland AllianceCoast Sagebrush - California Wild Buckwheat Shrubland Alliance Stakeholders: Latin America, West Classif. Resp.: West ALLIANCE CONCEPT Summary: This alliance is one expression of California coastal sage scrub. Stands grow on steep, south-facing slopes from 250-950 m elevation. Stands of this alliance are subject to long, dry summers and typically grow on sites with low moisture availability. Precipitation averages about 35 cm per year, and falls as rain predominantly between November and April. Some species are relatively inactive during the summer, while others are facultatively drought-deciduous. Artemisia californica and Eriogonum fasciculatum are the important shrubs in the canopy of this shrubland alliance. Other shrubs present may include Adenostoma fasciculatum, Yucca whipplei, Lotus scoparius, Diplacus aurantiacus ssp. aurantiacus, Rhus ovata, Malosma laurina, and Salvia apiana. The herbaceous layer is variable. Classification Comments: Artemisia californica and Eriogonum fasciculatum are equally important in stands of this alliance. California has plot data which define some associations. Internal Comments: Similar Alliances: Artemisia californica Shrubland Alliance (A.815) Encelia californica Shrubland Alliance (A.772) Eriogonum fasciculatum Shrubland Alliance (A.868) Similar Alliance Comments: This alliance is codominated by Artemisia californica and Eriogonum fasciculatum. If either plant dominates (>60% cover), the stand belongs to the alliance of the dominant species. Related Concepts: Diegan Coastal Sage Scrub (#32500) (Holland 1986b) I Riversidian Upland Sage Scrub (Holland 1986b) I ALLIANCE DESCRIPTION Environment: This alliance is one expression of California coastal sage scrub. Stands grow on steep, south-facing slopes from 250-950 m elevation. Stands of this alliance are subject to long, dry summers and typically grow on sites with low moisture availability. Some species are relatively inactive during the summer, while others are facultatively drought-deciduous. Precipitation averages about 35 cm per year, and falls as rain predominantly between November and April. Vegetation: Artemisia californica and Eriogonum fasciculatum are the important shrubs in the canopy of this shrubland alliance. Other shrubs present may include Adenostoma fasciculatum, Yucca whipplei, Lotus scoparius, Diplacus aurantiacus ssp. aurantiacus, Rhus ovata, Malosma laurina, and Salvia apiana. The herbaceous layer is variable. Dynamics: Some plants in this alliance have adapted to hot, dry summers by becoming largely inactive during the hottest part of the year. Fire frequency is fairly high. Plants may crown-sprout after a burn. ALLIANCE DISTRIBUTION Range: This alliance is found on California's inner southern coast and inland along the base of the Transverse and Peninsular ranges extending south into Baja California, Mexico. Nations: MX, US Subnations: CA, MXBC? TNC Ecoregions: 17:C USFS Ecoregions: M262B:CC Federal Lands: ALLIANCE SOURCES References: Holland 1986b, Sawyer and Keeler-Wolf 1995 CEGL003011–Artemisia californica - Eriogonum fasciculatum Shrubland [Placeholder]Coast Sagebrush - California Wild Buckwheat Shrubland Classif. Resp.: West Classif. Level: Association Conf.: 2 - Moderate Stakeholders: Latin America, West Status: Standard Origin: 26-Nov-1997 Concept Auth.: Concept Ref.: Western Ecology Working Group n.d. Ecological Systems: ELEMENT CONCEPT Summary: Classification Comments: Similar Associations: Similar Association Comments: Related Concepts: ELEMENT DESCRIPTION Environment: Vegetation: Dynamics: Adjacent Associations: Adjacent Association Comments: Other Comments: Description Author: Version: ELEMENT GLOBAL RANK & REASONS GRank: G3? GRank Review Date: 1-Dec-1997 GReasons: Ranking Author: Version: ELEMENT DISTRIBUTION Range: Nations: MX?, US Subnations: CA:S3, MXBC? TNC Ecoregions: 17:C USFS Ecoregions: M262B:CC Federal Lands: ELEMENT SOURCES References: Sawyer and Keeler-Wolf 1995, Western Ecology Working Group n.d. A.814–Artemisia californica - Salvia mellifera Shrubland AllianceCoast Sagebrush - Black Sage Shrubland Alliance Stakeholders: West Classif. Resp.: West ALLIANCE CONCEPT Summary: This alliance is one of the more xeric expressions of the coastal sage scrub alliances. Growing on steep, south-facing slopes in the inland portions of cismontane southern California, stands of this alliance are subject to long, hot, dry summers. Precipitation averages about 30 cm per year, and falls as rain predominantly between November and April. Salvia mellifera and Artemisia californica are codominant in this shrubland. Other shrubs present may include Eriogonum fasciculatum, Adenostoma fasciculatum, Yucca whipplei, Lotus scoparius, Rhus integrifolia, Rhus ovata, and Salvia apiana. The herbaceous layer is highly variable. Classification Comments: Artemisia californica and Salvia mellifera are equally important in stands of this alliance. California has plot data which define some associations. Internal Comments: Similar Alliances: Artemisia californica Shrubland Alliance (A.815) Encelia californica Shrubland Alliance (A.772) Salvia mellifera Shrubland Alliance (A.749) Similar Alliance Comments: Artemisia californica and Salvia mellifera are equally important in stands of the Artemisia californica - Salvia mellifera Shrubland Alliance (A.814). If either plant dominates (with more than 60% cover), the stand belongs to the alliance of the dominant species. Related Concepts: Coastal Sage Scrub (Cheatham and Haller 1975) I Riversidian Sage Scrub (Holland 1986b) I ALLIANCE DESCRIPTION Environment: This alliance is one of the more xeric expressions of the coastal sage scrub alliances. Growing on steep, south-facing slopes in the inland portions of cismontane southern California, stands of this alliance are subject to long, hot, dry summers. Precipitation averages about 30 cm per year, and falls as rain predominantly between November and April. Vegetation: Salvia mellifera and Artemisia californica are codominant in this xeric California shrubland alliance. Other shrubs present may include Eriogonum fasciculatum, Adenostoma fasciculatum, Yucca whipplei, Lotus scoparius, Rhus integrifolia, Rhus ovata, and Salvia apiana. The herbaceous layer is highly variable. Dynamics: This alliance tolerates the very xeric conditions of south-facing slopes and excessively drained soils, or clays that release stored water very slowly. Fire frequency is relatively high, and may fire may be a important for stand regeneration. ALLIANCE DISTRIBUTION Range: This alliance is found on slopes of California's southern coast and inland along the base of the Transverse and Peninsular ranges. Nations: US Subnations: CA TNC Ecoregions: USFS Ecoregions: 261B:CC, M262B:CC Federal Lands: ALLIANCE SOURCES References: Cheatham and Haller 1975, Holland 1986b, Sawyer and Keeler-Wolf 1995 CEGL003012–Artemisia californica - Salvia mellifera Shrubland [Placeholder]Coast Sagebrush - Black Sage Shrubland Classif. Resp.: West Classif. Level: Association Conf.: 2 - Moderate Stakeholders: West Status: Standard Origin: 26-Nov-1997 Concept Auth.: Concept Ref.: Western Ecology Working Group n.d. Ecological Systems: ELEMENT CONCEPT Summary: Classification Comments: Similar Associations: Similar Association Comments: Related Concepts: ELEMENT DESCRIPTION Environment: Vegetation: Dynamics: Adjacent Associations: Adjacent Association Comments: Other Comments: Description Author: Version: ELEMENT GLOBAL RANK & REASONS GRank: G2? GRank Review Date: 1-Dec-1997 GReasons: Ranking Author: Version: ELEMENT DISTRIBUTION Range: Nations: US Subnations: CA:S2 TNC Ecoregions: USFS Ecoregions: 261B:CC, M262B:CC Federal Lands: ELEMENT SOURCES References: Sawyer and Keeler-Wolf 1995, Western Ecology Working Group n.d. A.815–Artemisia californica Shrubland AllianceCoast Sagebrush Shrubland Alliance Stakeholders: Latin America, West Classif. Resp.: West ALLIANCE CONCEPT Summary: This alliance is one expression of California coastal sage scrub. Stands grow on steep, south-facing slopes and on rarely flooded, low-gradient deposits along streams. Elevations range from sea level to 1200 m. Precipitation averages about 35 cm per year, and falls predominantly between November and April. Stands of this alliance are subject to long, dry summers. Some species are relatively inactive during the summer. Artemisia californica is the dominant shrub in the canopy of this shrubland. Other shrubs present may include Eriogonum fasciculatum, Adenostoma fasciculatum, Yucca whipplei, Lotus scoparius, Rhus integrifolia, Salvia mellifera, Salvia leucophylla, Encelia farinosa, Encelia californica, Diplacus aurantiacus ssp. aurantiacus, Keckiella cordifolia, Isocoma menziesii, Baccharis pilularis, Sambucus mexicana, Toxicodendron diversilobum, and Salvia apiana. The herbaceous layer is variable. Classification Comments: Artemisia californica is the sole or dominant shrub canopy species (with greater than 60% cover) in stands of this alliance. California has plot data which define diverse associations. Internal Comments: Similar Alliances: Artemisia californica - Eriogonum fasciculatum Shrubland Alliance (A.813) Artemisia californica - Salvia mellifera Shrubland Alliance (A.814) Salvia mellifera Shrubland Alliance (A.749) Similar Alliance Comments: This alliance is dominated by Artemisia californica. Artemisia californica and Salvia mellifera are equally important in stands of the Artemisia californica - Salvia mellifera Shrubland Alliance (A.814). If either plant dominates (>60% cover), the stand belongs to the alliance of the dominant species. Related Concepts: Central Lucian Coastal Scrub (#32200) (Holland 1986b) I Diablan Sage Scrub (#32600) (Holland 1986b) I Northern Coastal Bluff Scrub (Holland 1986b) I Southern Coastal Bluff Scrub (#31200) (Holland 1986b) I Venturan Coastal Sage Scrub (#32300) (Holland 1986b) I ALLIANCE DESCRIPTION Environment: This alliance is one expression of California coastal sage scrub. Stands grow on steep, south-facing slopes and on rarely flooded, low-gradient deposits along streams. Elevations range from sea level to 1200 m. Stands of this alliance are subject to long, dry summers. Some species are relatively inactive during the summer. Precipitation averages about 35 cm per year, and falls predominantly between November and April. Vegetation: Artemisia californica is the dominant shrub in the canopy of this California shrubland alliance. Other shrubs present may include Eriogonum fasciculatum, Adenostoma fasciculatum, Yucca whipplei, Lotus scoparius, Rhus integrifolia, Salvia mellifera, Salvia leucophylla, Encelia farinosa, Encelia californica, Diplacus aurantiacus ssp. aurantiacus, Keckiella cordifolia, Isocoma menziesii, Baccharis pilularis, Sambucus mexicana, Toxicodendron diversilobum, and Salvia apiana. The herbaceous layer is variable. Dynamics: Plants of this alliance have adapted to hot, dry summers by becoming largely inactive during the hottest part of the year. Fire frequency is fairly high, and species in this alliance have adapted by crown-sprouting after a burn. ALLIANCE DISTRIBUTION Range: This alliance is found on California's southern coast and Channel Islands, and inland along the base of the Transverse and Peninsular ranges, extending south into Baja California, Mexico. Nations: MX, US Subnations: CA, MXBC? TNC Ecoregions: USFS Ecoregions: 261A:CC, 261B:CC Federal Lands: ALLIANCE SOURCES References: Holland 1986b, Sawyer and Keeler-Wolf 1995 CEGL003013–Artemisia californica Shrubland [Placeholder]Coast Sagebrush Shrubland Classif. Resp.: West Classif. Level: Association Conf.: 2 - Moderate Stakeholders: Latin America, West Status: Standard Origin: 26-Nov-1997 Concept Auth.: Concept Ref.: Western Ecology Working Group n.d. Ecological Systems: ELEMENT CONCEPT Summary: Classification Comments: Similar Associations: Similar Association Comments: Related Concepts: ELEMENT DESCRIPTION Environment: Vegetation: Dynamics: Adjacent Associations: Adjacent Association Comments: Other Comments: Description Author: Version: ELEMENT GLOBAL RANK & REASONS GRank: G3? GRank Review Date: 1-Dec-1997 GReasons: Ranking Author: Version: ELEMENT DISTRIBUTION Range: Nations: MX?, US Subnations: CA:S3, MXBC? TNC Ecoregions: USFS Ecoregions: 261A:CC, 261B:CC Federal Lands: ELEMENT SOURCES References: Sawyer and Keeler-Wolf 1995, Western Ecology Working Group n.d. Directory: Docs Docs -> Application for acem Docs -> Observational Assessment of Teaching Practices Teaching Assessment Initiative Proposal Submitted to The Teachers for a New Era project Docs -> Traditional British values Docs -> From Warfighters to Crimefighters: The Origins of Domestic Police Militarization Docs -> Borzoi Club of America Register of Merit Program I. What is a Register Of Merit Docs -> Protecting the rights of the child in the context of migration Docs -> United Nations E/C. 12/Esp/5 Docs -> 9th May 1950 the schuman declaration Docs -> Getting To Outcomes® in Services for Homeless Veterans 10 Steps for Achieving Accountability Download 1.98 Mb. Share with your friends:
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