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Isoetes riparia Tidal Marsh
Translated Name: Shore Quillwort Tidal Marsh
Common Name: Shore Quillwort Tidal Flat
Unique Identifier: CEGL006058
Classification Approach: International Vegetation Classification (IVC)
Summary: This freshwater tidal flat community of the central and northern Atlantic Coast occurs on mud, sand, or gravelly banks of freshwater tidal streams. The vegetation is sparse, but is characterized by Isoetes riparia. Associated species include Cyperus bipartitus (= Cyperus rivularis), Elatine americana, Sagittaria graminea, Sagittaria subulata, Sagittaria calycina, Sagittaria montevidensis, Heteranthera reniformis, Crassula aquatica (= Tillaea aquatica), Eriocaulon parkeri, Orontium aquaticum, Gratiola virginiana, Eleocharis obtusa (= var. peasei), and in more muddy areas, Schoenoplectus smithii (= Scirpus smithii). This is the potential habitat of Micranthemum micranthemoides.



Classification

Classification Confidence: Low - Poorly Documented
Classification Comments: The floristics of this association show overlap with Eriocaulon parkeri - Polygonum punctatum Tidal Marsh (CEGL006352). This association may be too small to be mapped in most locations. More information is needed on the range of variability present in this association and its relationship to related vegetation, namely CEGL006352. There is a possibility that these associations may be similar enough to lump due to species overlap (S. Neid pers. obs.)


Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.4 - Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland
Division 2.C.4.Ne - Atlantic & Gulf Coastal Marsh, Wet Meadow & Shrubland
Macrogroup Atlantic & Gulf Coastal Fresh-Oligohaline Tidal Marsh
Group Atlantic & Gulf Coastal Fresh-Oligohaline Tidal Marsh
Alliance Riverbank Quillwort - Estuary Pipewort Intertidal Freshwater Marsh

This is the revised vegetation hierarchy. For more information see Classification Sources and usnvc.org.

Similar Associations
Unique Identifier Name
CEGL004473 Sagittaria subulata - Limosella australis Tidal Marsh
CEGL006352 Eriocaulon parkeri - Polygonum punctatum Tidal Marsh



Related Concepts from Other Classifications

Related Subnational Community Units
These data are subject to substantial ongoing revision and may be out of date for some states.
In the U.S., contact the state Heritage Program for the most complete and up-to-date information at: http://www.natureserve.org/natureserve-network.
Information from programs in other jurisdictions will be posted when they are made available.
Subnation Concept Name Relationship to Standard Confidence Reference
Delaware Estuary Quillwort Tidal Flat Equivalent Certain Coxe 2009
Maryland Isoetes riparia Tidal Herbaceous Vegetation Equivalent Certain Harrison 2011
Massachusetts Seagrass Community Broader   MNHESP
New Jersey Isoetes riparia Tidal Sparse Vegetation Equivalent Certain Breden et al. 2001
New York Brackish Intertidal Mudflats Broader   Edinger et al. 2002
North Carolina Tidal Mud Flat Equivalent Certain Schafale 2012


Other Related Concepts
Related Concept Name: Isoetes riparia Sparse Vegetation [Provisional]
Relationship: = - Equivalent
Reference: Bartgis, R. 1986. Natural community descriptions. Unpublished draft. Maryland Natural Heritage Program, Maryland Department of Natural Resources, Annapolis.
Related Concept Name: Isoetes riparia Tidal Herbaceous Vegetation
Relationship: = - Equivalent
Reference: 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.
Related Concept Name: Isoetes riparia Tidal Sparse Vegetation
Relationship: ? - Undetermined
Reference: Clancy, K. 1996. Natural communities of Delaware. Unpublished review draft. Delaware Natural Heritage Program, Division of Fish and Wildlife, Delaware Division of Natural Resources and Environmental Control, Smyrna, DE. 52 pp.
Related Concept Name: Freshwater Intertidal Quillwort Flat
Relationship: = - Equivalent
Reference: Bowman, P. 2000. Draft classification for Delaware. Unpublished draft. Delaware Natural Heritage Program.
Related Concept Name: Freshwater tidal marsh complex, lower intertidal flat
Relationship: ? - Undetermined
Reference: Breden, T. F. 1989. A preliminary natural community classification for New Jersey. Pages 157-191 in: E. F. Karlin, editor. New Jersey's rare and endangered plants and animals. Institute for Environmental Studies, Ramapo College, Mahwah, NJ. 280 pp.
Related Concept Name: High-Energy Tidal Shore
Relationship: B - Broader
Reference: Fleming, G. P., P. P. Coulling, K. D. Patterson, and K. Taverna. 2006. The natural communities of Virginia: Classification of ecological community groups. Second approximation. Version 2.2. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. [http://www.dcr.virginia.gov/natural_heritage/ncTIV.shtml]
Related Concept Name: Southern New England/Gulf of Maine Fresh/ Brackish Subtidal Estuarine Community.
Relationship: ? - Undetermined
Reference: Rawinski, T. 1984a. Natural community description abstract - southern New England calcareous seepage swamp. Unpublished report. The Nature Conservancy, Boston, MA. 6 pp.
Related Concept Name: Southern New England/Gulf of Maine Saline/ Brackish Intertidal Flat
Relationship: ? - Undetermined
Reference: Rawinski, T. 1984a. Natural community description abstract - southern New England calcareous seepage swamp. Unpublished report. The Nature Conservancy, Boston, MA. 6 pp.
Related Concept Name: Tidal Mud Flat (Quillwort Subtype)
Relationship: ? - Undetermined
Reference: Schafale, M. 2000. Fourth approximation guide. Coastal Plain. January 2000 draft. North Carolina Natural Heritage Program, Raleigh.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES203.259 Atlantic Coastal Plain Embayed Region Tidal Freshwater Marsh
CES203.516 Northern Atlantic Coastal Plain Fresh and Oligohaline Tidal Marsh


NatureServe Conservation Status
Global Status: GNR (01Dec1997)
Rounded Global Status: GNR - Not Yet Ranked

Distribution
Color legend for Distribution Map
United States Distribution: CT, DE, MA, MD, NC, NJ, NY, RI, VA
Global Distribution: United States

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Hot Continental Division
Province Name: Eastern Broadleaf Forest (Oceanic) Province
Province Code: 221 Occurrence Status: Possible
Section Name: Lower New England Section
Section Code: 221A Occurrence Status: Possible
Division Name: Subtropical Division
Province Name: Outer Coastal Plain Mixed Forest Province
Province Code: 232 Occurrence Status: Confident or certain
Section Name: Middle Atlantic Coastal Plain Section
Section Code: 232A Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: The vegetation is sparse, but is characterized by Isoetes riparia. Associated species include Cyperus bipartitus (= Cyperus rivularis), Elatine americana, Sagittaria graminea, Sagittaria subulata, Sagittaria calycina, Sagittaria montevidensis, Heteranthera reniformis, Crassula aquatica (= Tillaea aquatica), Eriocaulon parkeri, Orontium aquaticum, Gratiola virginiana, Eleocharis obtusa (= var. peasei), and in more muddy areas, Schoenoplectus smithii (= Scirpus smithii). This is the potential habitat of Micranthemum micranthemoides (considered extirpated).

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Eriocaulon parkeri GNR Flowering forb Herb (field)      
 
 
Isoetes riparia GNR Fern (Spore-bearing forb) Herb (field)  
 
 


At-Risk Species Reported for this Association
Scientific Name
  (Common Name)
NatureServe Global Status U.S. Endangered Species Act Status
Eriocaulon parkeri
  (Parker's Pipewort)
G3  


Environmental Setting

Wetland Indicator: Y
Environmental Summary: This association occurs on fresh tidal mudflats with soft to semi-soft substrate in shallow waters associated with embayments, occurring behind beaches and sand spits, as well as along margins of estuaries. These occur in quiet waters where fine sediments accumulate. Occurrence and extent of mudflats vary with coastline morphology and tidal amplitude. Mudflats are regularly flooded and exposed by diurnal tides (Whitlatch 1982).


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): Eastern Ecology Group, mod. S.L. Neid
Element Description Edition Date: 14May2002
Element Description Author(s): S.L. Neid

Ecological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).


References
  • Bartgis, R. 1986. Natural community descriptions. Unpublished draft. Maryland Natural Heritage Program, Maryland Department of Natural Resources, Annapolis.

  • Bowman, P. 2000. Draft classification for Delaware. Unpublished draft. Delaware Natural Heritage Program.

  • Breden, T. F. 1989. A preliminary natural community classification for New Jersey. Pages 157-191 in: E. F. Karlin, editor. New Jersey's rare and endangered plants and animals. Institute for Environmental Studies, Ramapo College, Mahwah, NJ. 280 pp.

  • Breden, T. F., Y. R. Alger, K. S. Walz, and A. G. Windisch. 2001. Classification of vegetation communities of New Jersey: Second iteration. Association for Biodiversity Information and New Jersey Natural Heritage Program, Office of Natural Lands Management, Division of Parks and Forestry, New Jersey Department of Environmental Protection, Trenton.

  • Clancy, K. 1996. Natural communities of Delaware. Unpublished review draft. Delaware Natural Heritage Program, Division of Fish and Wildlife, Delaware Division of Natural Resources and Environmental Control, Smyrna, DE. 52 pp.

  • Coxe, R. 2009. Guide to Delaware vegetation communities. Spring 2009 edition. State of Delaware, Division of Fish and Wildlife, Delaware Natural Heritage Program, Smyrna.

  • Eastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boston, MA.

  • Edinger, G. J., D. J. Evans, S. Gebauer, T. G. Howard, D. M. Hunt, and A. M. Olivero, editors. 2002. Ecological communities of New York state. Second edition. A revised and expanded edition of Carol Reschke's ecological communities of New York state. (Draft for review). New York Natural Heritage Program, New York State Department of Environmental Conservation, Albany, NY.

  • Fleming, G. P., P. P. Coulling, K. D. Patterson, and K. Taverna. 2006. The natural communities of Virginia: Classification of ecological community groups. Second approximation. Version 2.2. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. [http://www.dcr.virginia.gov/natural_heritage/ncTIV.shtml]

  • Fleming, G. P., and K. D. Patterson. 2011a. Natural communities of Virginia: Ecological groups and community types. Natural Heritage Technical Report 11-07. Virginia Department of Conservation and Recreation, Division of Natural Heritage, Richmond. 34 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.

  • Rawinski, T. 1984a. Natural community description abstract - southern New England calcareous seepage swamp. Unpublished report. The Nature Conservancy, Boston, MA. 6 pp.

  • Schafale, M. 2000. Fourth approximation guide. Coastal Plain. January 2000 draft. North Carolina Natural Heritage Program, Raleigh.

  • Schafale, M. P. 2012. Classification of the natural communities of North Carolina, 4th Approximation. North Carolina Department of Environment, Health, and Natural Resources, Division of Parks and Recreation, Natural Heritage Program, Raleigh.

  • Swain, P. C., and J. B. Kearsley. 2001. Classification of natural communities of Massachusetts. September 2001 draft. Natural Heritage and Endangered Species Program, Massachusetts Division of Fisheries and Wildlife, Westborough, MA.

  • Whitlatch, R. B. 1982. The ecology of New England tidal flats: A community profile. FWS/OBS-81/01. USDI Fish and Wildlife Service, Biological Services Program, Washington, DC. 125 pp.


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