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CEGL006970 Anemone virginiana var. alba Riverscour Sparse Vegetation

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Tall Thimbleweed Riverscour Sparse Vegetation

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This New Jersey calcareous riverside outcrop community occurs along sections of river shoreline where winter ice scouring and limestone outcrops co-occur. Species composition is very diverse, but the most frequent species are Anemone virginiana var. alba, Andropogon gerardii, Arabis lyrata, Symphyotrichum lanceolatum, Campanula rotundifolia, Phalaris arundinacea, Potentilla arguta, and Physocarpus opulifolius. Other characteristic species include Galium boreale, Lythrum salicaria, Melilotus officinalis, Poa spp., Spartina pectinata, Zizia aptera. Areas of shoreline supporting this community vary between sloped, solid slabs of limestone to ''cobbled'' areas of smooth limestone and other rocks intermingled with substantial alluvial deposits. The degree of shoreline sloping varies from steep to gentle. The moisture regime is also quite variable among sites. Sites typically occur at north to northwest exposures, where they receive full late-day sun.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Community description based on report completed by Leslie Shank in 1999. All study sites were located in New Jersey along the Delaware River. This is a temporary placeholder community which encompasses a wide range of species assemblages.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Species composition is very diverse, but the most frequent species are Anemone virginiana var. alba (= Anemone riparia), Andropogon gerardii, Arabis lyrata, Symphyotrichum lanceolatum (= Aster lanceolatus), Campanula rotundifolia, Phalaris arundinacea, Potentilla arguta, and Physocarpus opulifolius. Other characteristic species include Galium boreale, Lythrum salicaria, Melilotus officinalis (= Melilotus albus), Poa spp., Spartina pectinata, Zizia aptera.

Dynamics:  No Data Available

Environmental Description:  This calcareous riverside outcrop community occurs along sections of river shoreline where winter ice scouring and limestone outcrops co-occur. Areas of shoreline supporting this community vary between sloped, solid slabs of limestone to ''cobbled'' areas of smooth limestone and other rocks intermingled with substantial alluvial deposits. The degree of shoreline sloping varies from steep to gentle. The moisture regime is also quite variable among sites. Sites typically occur at north to northwest exposures, where they receive full late-day sun.

Geographic Range: This community is reported from New Jersey along the Delaware River.

Nations: US

States/Provinces:  NJ




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: No Data Available

Concept Author(s): L. Shank and J. Shreiner (1999)

Author of Description: L.A. Sneddon

Acknowledgements: No Data Available

Version Date: 01-04-16

  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Shank, L. K., and J. Shreiner. 1999. Globally threatened calcareous riverside seep and calcareous riverside outcrop communities along the New Jersey shoreline of the Delaware River: Summary of rare plant census, community sampling, and recommended monitoring protocol. Department of Environmental Protection, Division of Parks and Forestry, Office of Natural Lands Management, Trenton, NJ. 220 pp.