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CEGL005466 Andropogon glomeratus - Schoenus nigricans Seep Hanging Garden
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Bushy Bluestem - Black Bogrush Seep Hanging Garden
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: Schoenus nigricans and/or Andropogon glomeratus is dominant or codominant, forming an intermittent to continuous herbaceous layer with 34-75% cover. The shrub layer is open and Baccharis sergiloides is also sometimes present. The tree layer, when present, is sparse. This association is currently known from Death Valley in the Mojave Desert of California. Stands are found in low-elevation alkali calcareous springs at elevations ranging from approximately 100 to 300 m.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: A similar association of Eleocharis rostellata - Schoenus nigricans community has been noted by Sada and Cooper (2012).
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The dominant or codominant herb is Schoenus nigricans and/or Andropogon glomeratus. The shrub Baccharis sergiloides is also sometimes present. The tree layer, when present, is typically sparse, and the shrub layer is sparse to open. Nonvascular plants, when present, are typically sparse.
Dynamics: Andropogon glomeratus and Schoenus nigricans are both tolerant of alkalinity, and are found in the southeastern United States in brackish, freshwater and calcareous wetland sites. In Death Valley, stands occur in a fine-scale mosaic with other herbs, shrubs, and trees in alkali calcareous springs, including the rare sedge Fimbristylis thermalis.
Environmental Description: Stands are found in low-elevation alkali calcareous springs at elevations ranging from approximately 100 to 300 m.
Geographic Range: This association is known from California''s Death Valley west of the Amargosa Range in the Big Horn Springs, Ratatat Spring, and Travertine Springs complex. It is also noted as occurring in the Nevares Springs.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.943992
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation | F013 | 2.C.4 |
| Division | 2.C.4.Nc Southwestern North American Warm Desert Freshwater Marsh & Bosque Division | D032 | 2.C.4.Nc |
| Macrogroup | 2.C.4.Nc.1 Warm Desert Lowland Freshwater Marsh, Wet Meadow & Shrubland Macrogroup | M076 | 2.C.4.Nc.1 |
| Group | 2.C.4.Nc.1.a Maidenhair Fern species - Monkeyflower species - Columbine species Colorado Plateau Seep Group | G545 | 2.C.4.Nc.1.a |
| Alliance | A2655 Ditch Reedgrass - Bushy Bluestem Hanging Garden Alliance | A2655 | 2.C.4.Nc.1.a |
| Association | CEGL005466 Bushy Bluestem - Black Bogrush Seep Hanging Garden | CEGL005466 | 2.C.4.Nc.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Andropogon glomeratus-Schoenus nigricans Herbaceous Seep Association (Evens et al. 2014)
- Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.
- Sada, D. W., and D. J. Cooper. 2012. Furnace Creek springs restoration and adaptive management plan, Death Valley National Park, California. Report for Death Valley National Park. Desert Research Institute, Reno, NV, and Colorado State University, Fort Collins, CO.
- Thomas, K. A. 2006. Death Valley National Park Travertine Springs complex vegetation. Technical report. U.S. Geological Survey Southwest Biological Science Center, Flagstaff, AZ.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.