Print Report

CEGL004110 Fimbristylis castanea - Paspalum distichum Marsh

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Marsh Fimbry - Knotgrass Marsh

Colloquial Name: Florida Panhandle Dune Swale

Hierarchy Level:  Association

Type Concept: This dune swale community of the Florida Panhandle Gulf Coast is dominated by Fimbristylis castanea and/or Paspalum distichum. In some examples, Fimbristylis castanea may occur in nearly monospecific stands, or sometimes intermixed with Panicum amarum var. amarulum, Iva imbricata, Sesuvium portulacastrum, and Lilaeopsis carolinensis.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: On the panhandle and southwestern Gulf coasts of Florida, it is a common colonizer of drying tide pools and brackish flats on recently built-out beaches (A. Johnson pers. obs.).

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

Physiognomy and Structure: No Data Available

Floristics: This type is dominated by halophytic species, including Fimbristylis castanea, Paspalum distichum, Panicum amarum var. amarulum (= Panicum amarulum), and/or Iva imbricata (Johnson 1997).

Dynamics:  This dune swale community is maintained by periodic incursion of seawater. The dominant species apparently rapidly colonize bare sand patches. The formation of a seaward dune ridge which cuts off seawater inflow will lead to successional replacement of this type by a Eragrostis elliottii type within 4-7 years (Johnson 1997).

Environmental Description:  This type occurs in early-successional brackish interdune swales and backdune flats.

Geographic Range: This dune swale community occurs in the Florida Panhandle Gulf Coast.

Nations: US

States/Provinces:  FL




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Paspalum / Fimbristylis Swales (Johnson 1997)

Concept Author(s): A.S. Weakley

Author of Description: R.E. Evans

Acknowledgements: No Data Available

Version Date: 07-29-02

  • Au, S. 1974. Vegetation and ecological processes on Shackleford Bank, North Carolina. USDI National Park Service, Scientific Monograph No. 6.
  • Johnson, A. F. 1997. Rates of vegetation succession on a coastal dune system in northwest Florida. Journal of Coastal Research 13:373-384.
  • Johnson, Ann F. Personal communication. Florida Natural Areas Inventory, Tallahassee.
  • Sauer, J. D. 1967. Geographic reconnaissance of seashore vegetation along the Mexican Gulf Coast. Louisiana State University Press, Coastal Studies Series No. 21, Baton Rouge.
  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.