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Alliance Detail Report: A3374
Impatiens capensis - Symplocarpus foetidus - Caltha palustris Seep Alliance

The U.S. National
Vegetation Classification
These are circumneutral or slightly calcareous groundwater seeps typically dominated by forbs, including Angelica atropurpurea, Caltha palustris, Impatiens capensis, and Symplocarpus foetidus, and found throughout the Central Appalachian, northeastern and north-central United States and eastern temperate Canada.
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Translated Name:Orange Jewelweed - Skunk-cabbage - Yellow Marsh-marigold Seep Alliance
Colloquial Name:Northern Calcareous Seep
These circumneutral or slightly calcareous groundwater seeps are typically dominated by forbs, including Angelica atropurpurea, Caltha palustris, Impatiens capensis, and Symplocarpus foetidus. Other species that may be found include Carex lacustris, Carex stricta, Glyceria striata, and Thelypteris palustris. This type is found throughout the Central Appalachian, northeastern and north-central United States and eastern temperate Canada. Stands are found on lower slopes of glacial moraines, ravines, and terraces around seepage areas, where circumneutral or slightly calcareous groundwater seeps to the surface. Peat sometimes accumulates to a depth of 1 m. Other sites have little organic material, with groundwater typically welling up through carbonate-encrusted gravel.
This alliance contains vegetation of circumneutral or slightly calcareous groundwater seeps from the Central Appalachians north through the mid-Atlantic states to New England. The criteria for distinguishing it from other alliances include floristic as well as biogeographic ones.
Examples occur as inclusions within other, usually forested, vegetation. As currently defined, this alliance includes only those sites dominated by herbaceous species. Sites that are floristically very similar but occur under a tree canopy are treated as forested seeps and swamps.
Synonomy:

Related Type Name:

Short Citation:
  • Faber-Langendoen et al. 1996
  • Faber-Langendoen et al. 2017b
  • MNNHP 1993
  • White and Madany 1978
States/Provinces:CT, DC, IA, IL, IN, MA, MD?, ME, MI, MN, NB?, NH, NJ, NY, OH, ON, PA, QC?, RI, VA, VT, WI, WV
Nations:CA, US
Range:This type is found throughout the Central Appalachian, northeastern and north-central United States and eastern temperate Canada.
US Forest Service Ecoregions
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This alliance is dominated by forbs.
This alliance is dominated by forbs; Angelica atropurpurea, Caltha palustris, Impatiens capensis, and Symplocarpus foetidus are usual dominants. Other species that may be found include Carex lacustris, Carex stricta, Glyceria striata, and Thelypteris palustris. Shrubs and trees from surrounding vegetation types sometimes occur. Typical woody species include Acer rubrum, Fraxinus nigra, and Thuja occidentalis, which may occur at low cover.
Stands are found on lower slopes of glacial moraines, ravines, and terraces around seepage areas, where circumneutral or slightly calcareous groundwater seeps to the surface. Peat sometimes accumulates to a depth of 1 m. Other sites have little organic material, with groundwater typically welling up through carbonate-encrusted gravel.
Low
No Data Available
Authors:
M. Pyne and D. Faber-Langendoen      Version Date: 18Dec2014


References:
  • Faber-Langendoen, D., and Midwest State Natural Heritage Program Ecologists. 1996. Terrestrial vegetation of the midwest United States. International classification of ecological communities: Terrestrial vegetation of the United States. The Nature Conservancy, Arlington, VA.
  • Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2017b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
  • MNNHP [Minnesota Natural Heritage Program]. 1993. Minnesota's native vegetation: A key to natural communities. Version 1.5. Minnesota Department of Natural Resources, Natural Heritage Program, St. Paul, MN. 110 pp.
  • White, J., and M. Madany. 1978. Classification of natural communities in Illinois. Pages 311-405 in: Natural Areas Inventory technical report: Volume I, survey methods and results. Illinois Natural Areas Inventory, Urbana, IL.


USNVC Credits: Detailed Description of the National Vegetation Classification Types

Date Accessed:

To cite a description:
Author(s). publicationYear. Description Title [last revised revisionDate]. United States National Vegetation Classification. Federal Geographic Data Committee, Washington, D.C.

About spatial standards:
The United States Federal Geographic Data Committee (hereafter called the FGDC) is tasked to develop geospatial data standards that will enable sharing of spatial data among producers and users and support the growing National Spatial Data Infrastructure (NSDI), acting under the Office of Management Budget (OMB) Circular A-16 (OMB 1990, 2000) and Executive Order #12906 (Clinton 1994) as amended by Executive Order #13286 (Bush 2003). FGDC subcommittees and working groups, in consultation and cooperation with state, local, tribal, private, academic, and international communities, develop standards for the content, quality, and transferability of geospatial data. FGDC standards are developed through a structured process, integrated with one another to the extent possible, supportable by the current vendor community (but are independent of specific technologies), and publicly available.

About this document
This document contains type descriptions at the Alliance level of the U.S. National Vegetation Classification. These descriptions were primarily written by NatureServe ecologists in collaboration with Federal Geographic Data Committee Vegetation Subcommittee and a wide variety of state, federal and private partners as a part of the implementation of the National Vegetation Classification. Formation descriptions were written by the Hierarchy Revisions Working Group. The descriptions are based on consultation with natural resource professionals, published literature, and other vegetation classification systems. The Ecological Society of America's Panel on Vegetation Classification is responsible for managing the review and formal adoption of these types into the National Vegetation Classification. Partners involved in the implementation of the USNVC include:

U.S. Government
  • Department of Agriculture (USDA)
  • Department of Commerce (DOC)
  • Department of Defense (DOD)
  • Department of the Interior (USDI)
  • Forest Service (FS) - Chair
  • National Agriculture Statistical Service (NASS)
  • Natural Resources Conservation Service (NRCS)
  • National Oceanic and Atmospheric Administration (NOAA)
  • National Marine Fisheries Service (NMFS)
  • U.S. Army Corps of Engineers (USACE)
  • U.S. Navy (NAVY)
  • Bureau of Land Management (BLM)
  • Fish and Wildlife Service (FWS)
  • National Park Service (NPS)
  • U.S. Geological Survey (USGS)
  • Environmental Protection Agency (EPA)
  • National Aeronautics and Space Administration (NASA)
Non U.S. Government
  • NatureServe (NS)
  • Ecological Society of America (ESA)

Disclaimer:
Given the dynamic nature of the standard, it is possible a type description is incomplete or in revision at the time of download; therefore, users of the data should track the date of access and read the revisions section of the USNVC.org website to understand the current status of the classification. While USNVC data have undergone substantial review prior to posting, it is possible that some errors or inaccuracies have remained undetected.

For information on the process used to develop these descriptions see:

Faber-Langendoen, D., T. Keeler-Wolf, D. Meidinger, D. Tart, B. Hoagland, C. Josse, G. Navarro, S. Ponomarenko, J.-P. Saucier, A. Weakley, P. Comer. 2014. EcoVeg: A new approach to vegetation description and classification. Ecological Monographs 84:533-561 (erratum 85:473).

Franklin, S., D. Faber-Langendoen, M. Jennings, T. Keeler-Wolf, O. Loucks, A. McKerrow, R.K. Peet, and D. Roberts. 2012. Building the United States National Vegetation Classification. Annali di Botanica 2: 1-9.

Jennings, M. D., D. Faber-Langendoen, O. L. Louckes, R. K. Peet, and D. Roberts. 2009. Standards for associations and alliances of the U.S. National Vegetation Classification. Ecological Monographs 79(2):173-199.

FGDC [Federal Geographic Data Committee]. 2008. Vegetation Classification Standard, FGDC-STD-005, Version 2. Washington, DC., USA. [http://www.fgdc.gov/standards/projects/FGDC-standards-projects/vegetation/NVCS_V2_FINAL_2008-02.pdf]

For additional information contact:

  • Implementation of the U.S. National Vegetation Classification Standard - Alexa McKerrow (amckerrow@usgs.gov)
  • NatureServe's Development of NVC Type Descriptions - Don Faber-Langendoen (don_faber- langendoen@natureserve.org)
  • Ecological Society of America's Review of the Type Descriptions Scott.Franklin@unco.edu
  • Federal Geographic Data Committee - Vegetation Subcommittee's Activities - Marianne Burke (mburke@fs.fed.us)