Print Report

CEGL006251 Alnus serrulata - Physocarpus opulifolius Wet Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Hazel Alder - Common Ninebark Wet Shrubland

Colloquial Name: Allegheny Floodplain Alder Thicket

Hierarchy Level:  Association

Type Concept: This community is a floodplain alder thicket of the Central Appalachians, High Alleghenies and Western Allegheny Plateau regions. In the Central Appalachians, these are shrub thickets dominated by Alnus serrulata along rivers and streams on rocky shoals and gravel bars. This shrub thicket of the Western Allegheny Plateau occurs on circumneutral to somewhat calcareous substrates. Soils are generally mineral with a thin organic layer. The vegetation typically occurs in a variety of environmental settings, including upland edge of marshes, adjacent to red maple wetlands, small upland depressions, and at the base of slopes. The canopy is characterized by Alnus serrulata and Physocarpus opulifolius, the latter generally contributing less cover in relation to Alnus. Woody associates include Salix spp., Sambucus nigra ssp. canadensis, Cornus amomum, Rhododendron viscosum, Decodon verticillatus, Cephalanthus occidentalis, or Ilex verticillata. Herbaceous species may include Osmunda regalis, Thelypteris palustris, Typha latifolia, Peltandra virginica, or Carex stricta.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

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

Physiognomy and Structure: No Data Available

Floristics: The canopy is characterized by Alnus serrulata and Physocarpus opulifolius, the latter generally contributing less cover in relation to Alnus. Woody associates include Salix spp., Sambucus nigra ssp. canadensis (= Sambucus canadensis), Cornus amomum, Rhododendron viscosum, Decodon verticillatus, Cephalanthus occidentalis, or Ilex verticillata. Herbaceous species may include Osmunda regalis, Thelypteris palustris, Typha latifolia, Peltandra virginica, or Carex stricta.

Dynamics:  No Data Available

Environmental Description:  In the Central Appalachians these are shrub thickets dominated by Alnus serrulata along rivers and streams on rocky shoals and gravel bars. This shrub thicket of the Western Allegheny Plateau occurs on circumneutral to somewhat calcareous substrates. Soils are generally mineral with a thin organic layer. The vegetation typically occurs in a variety of environmental settings, including upland edge of marshes, adjacent to red maple wetlands, small upland depressions, and at the base of slopes

Geographic Range: This community occurs in the Central Appalachians, High Alleghenies and Western Allegheny Plateau regions, ranging from New Hampshire to Ohio.

Nations: US

States/Provinces:  MD, NH, NY, OH, PA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G5

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: < Alder - Dogwood Floodplain Thicket (Zimmerman et al. 2012)
? Alder-ninebark thickets (CAP pers. comm. 1998)
= Speckled alder riverine shrubland (Perles et al. 2004)

Concept Author(s): Eastern Ecology Group

Author of Description: L.A. Sneddon

Acknowledgements: No Data Available

Version Date: 02-23-06

  • CAP [Central Appalachian Forest Working Group]. 1998. Central Appalachian Working group discussions. The Nature Conservancy, Boston, MA.
  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.
  • Fike, J. 1999. Terrestrial and palustrine plant communities of Pennsylvania. Pennsylvania Natural Diversity Inventory. Pennsylvania Department of Conservation and Recreation, Bureau of Forestry, Harrisburg, PA. 86 pp.
  • Harrison, J. W. 2011. The natural communities of Maryland: 2011 working list of ecological community groups and community types. Unpublished report. Maryland Department of Natural Resources, Wildlife and Heritage Service, Natural Heritage Program, Annapolis. 33 pp.
  • Harrison, J. W., compiler. 2004. Classification of vegetation communities of Maryland: First iteration. A subset of the International Classification of Ecological Communities: Terrestrial Vegetation of the United States, NatureServe. Maryland Natural Heritage Program, Maryland Department of Natural Resources, Annapolis. 243 pp.
  • PNHP [Pennsylvania Natural Heritage Program]. 2011. Alder - Dogwood Floodplain Thicket Factsheet. [http://www.naturalheritage.state.pa.us/Community.aspx?=30001] (accessed February 01, 2012)
  • Perles, S. J., G. S. Podniesinski, E. A. Zimmerman, E. Eastman, and L. A. Sneddon. 2006d. Vegetation classification and mapping at Allegheny Portage Railroad National Historic Site. Technical Report NPS/NER/NRTR--2006/079. National Park Service, Philadelphia, PA.
  • Perles, S., G. Podniesinski, and J. Wagner. 2004. Classification, assessment and protection of non-forested floodplain wetlands of the Susquehanna drainage. Report to the U.S. Environmental Protection Agency and Pennsylvania Department of Conservation and Natural Resources. Pennsylvania Natural Heritage Program, Harrisburg. 128 pp.
  • TNC and WPC [The Nature Conservancy and Western Pennsylvania Conservancy]. 2004. Classification, assessment, and protection of non-forested floodplain wetlands of the Susquehanna drainage. Pennsylvania Natural Heritage Program, Harrisburg, PA. 128 pp.
  • Zimmerman, E. A., T. Davis, M. A. Furedi, B. Eichelberger, J. McPherson, S. Seymour, G. Podniesinski, N. Dewar, and J. Wagner, editors. 2012. Terrestrial and palustrine plant communities of Pennsylvania. Pennsylvania Natural Heritage Program, Pennsylvania Department of Conservation and Natural Resources, Harrisburg. [http://www.naturalheritage.state.pa.us/Communities.aspx]