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CEGL007931 Andropogon gerardii - Panicum (anceps, virgatum) Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Big Bluestem - (Beaked Panicgrass, Switchgrass) Grassland
Colloquial Name: Southern Ridge & Valley Mesic Grassland
Hierarchy Level: Association
Type Concept: These mesic deep-soil perennial grasslands of the southern Ridge and Valley of Tennessee are best developed along the margins of small streams and on lower, sheltered slopes. This vegetation is dominated by Andropogon gerardii, Panicum virgatum, and Panicum anceps, in patches of various combinations and percent covers depending on slope position. It also contains Dichanthelium spp. and diverse forbs. Some examples are maintained by mechanical clearing of powerline rights-of-way. A slightly drier community which may occur adjacent to this one is ~Schizachyrium scoparium - Sorghastrum nutans - Silphium spp. Grassland (CEGL007932)$$. More information is needed on the detailed floristics of this type and its relation to related vegetation in other nearby ecoregions.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Described from Oak Ridge Reservation, Anderson and Roane counties, Tennessee. Currently most available habitat for this vegetation is found in mesic zones of annually mowed powerline rights-of-way. See also ~Schizachyrium scoparium - Sorghastrum nutans - Silphium spp. Grassland (CEGL007932)$$, which is typically somewhat less mesic.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This vegetation is dominated by Andropogon gerardii, Panicum virgatum, and Panicum anceps, in patches of various combinations and percent covers depending on slope position. It also contains Dichanthelium spp. and diverse forbs.
Dynamics: Some examples are maintained by mechanical clearing of powerline rights-of-way.
Environmental Description: These perennial grasslands occur on mesic deep soil and are best developed along the margins of small streams and on lower, sheltered slopes.
Geographic Range: These perennial grasslands occur in the southern Ridge and Valley of Tennessee.
Nations: US
States/Provinces: TN
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689158
Confidence Level: Low
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.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.2 Temperate Grassland & Shrubland Formation | F012 | 2.B.2 |
| Division | 2.B.2.Nc Eastern North American Grassland & Shrubland Division | D024 | 2.B.2.Nc |
| Macrogroup | 2.B.2.Nc.3 Little Bluestem - Dropseed species Central Interior Calcareous Scrub & Grassland Macrogroup | M508 | 2.B.2.Nc.3 |
| Group | 2.B.2.Nc.3.a Big Bluestem - Little Bluestem - Ashy Sunflower Patch Prairie Group | G174 | 2.B.2.Nc.3.a |
| Alliance | A3889 Big Bluestem - Switchgrass - Rough Dropseed Southeastern Patch Prairie Alliance | A3889 | 2.B.2.Nc.3.a |
| Association | CEGL007931 Big Bluestem - (Beaked Panicgrass, Switchgrass) Grassland | CEGL007931 | 2.B.2.Nc.3.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: < ID4a. Bluestem Tallgrass Prairie (Allard 1990)
= Mesic site 1b (DeSelm et al. 1969)
= Mesic site 1b (DeSelm et al. 1969)
- Allard, D. J. 1990. Southeastern United States ecological community classification. Interim report, Version 1.2. The Nature Conservancy, Southeast Regional Office, Chapel Hill, NC. 96 pp.
- DeSelm, H. R., P. B. Whitford, and J. S. Olson. 1969. The barrens of the Oak Ridge area, Tennessee. The American Midland Naturalist 81:315-330.
- Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.