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Brasenia schreberi Eastern Aquatic Vegetation
Translated Name: Watershield Eastern Aquatic Vegetation
Common Name: Eastern Watershield Pond
Unique Identifier: CEGL004527
Classification Approach: International Vegetation Classification (IVC)
Summary: This vegetation occurs in a range of natural ponds and impoundments, including ponds, beaver ponds, and lake margins. Brasenia schreberi is the dominant plant species; other species may include Leersia oryzoides, Lemna valdiviana, Juncus effusus, Stuckenia pectinata (= Potamogeton pectinatus), Nymphaea odorata, and Spirodela polyrrhiza. An occurrence along the Texas coast at McFaddin National Wildlife Refuge occupies the "open water" areas interspersed with emergent vegetation and "flotant" marsh dominated by Panicum hemitomon (Panicum hemitomon Marsh (CEGL004665)). Other floating aquatics present include Nelumbo lutea, Nymphaea odorata, Nymphaea mexicana, and Utricularia spp., along with submersed aquatics such as Cabomba caroliniana and Ceratophyllum demersum and rooted aquatics such as Pontederia cordata and Zizaniopsis miliacea. Additional information is needed on the full range and variability of expression of this vegetation.



Classification

Classification Confidence: Low - Poorly Documented
Classification Comments: Known from artificial impoundments on the Ozark National Forest (Bayou District). An apparently disjunct example from the Interior Low Plateau is known from Kentucky's "Hundred Acre Pond," a Karst sinkhole wetland. Brasenia schreberi is the dominant floating aquatic in the "open water" areas of Willow Slough Marsh (approx. 1000 acres) at McFaddin National Wildlife Refuge, Texas. Reported from South Carolina by Aulbach-Smith (pers. comm. 2001).

Vegetation Hierarchy
Class 5 - Aquatic Vegetation
Subclass 5.B - Freshwater Aquatic Vegetation
Formation 5.B.2 - Temperate to Polar Freshwater Aquatic Vegetation
Division 5.B.2.Na - North American Freshwater Aquatic Vegetation
Macrogroup Eastern North American Freshwater Aquatic Vegetation
Group Eastern North American Freshwater Aquatic Vegetation
Alliance Water-lily - Pond-lily Aquatic Vegetation

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

Similar Associations
Unique Identifier Name
CEGL004528 Ceratophyllum demersum - Stuckenia pectinata Aquatic Vegetation
CEGL005200 Brasenia schreberi Western Aquatic Vegetation



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
Alabama Brasenia schreberi Eastern Herbaceous Vegetation Equivalent Certain Schotz pers. comm.
Louisiana Submerged/Floating Vascular Vegetation Broader   Smith 1996
Oklahoma Brasenia schreberi herbaceous association Undetermined   Hoagland 2000


Other Related Concepts
Related Concept Name: Brasenia schreberi Association
Relationship: = - Equivalent
Reference: Christy, J. A. 2004. Native freshwater wetland plant associations of northwestern Oregon. Oregon Natural Heritage Information Center, Oregon State University, Portland, OR.
Related Concept Name: Open Water/Aquatic Bed Veg., Natural Impoundment Pond
Relationship: B - Broader
Reference: Ambrose, J. 1990a. Georgia's natural communities--A preliminary list. Unpublished document. Georgia Natural Heritage Inventory. 5 pp.
Related Concept Name: Submergent/Floating Vascular Vegetation
Relationship: B - Broader
Reference: Smith, L. M., compiler. 1996a. Natural plant communities in Louisiana currently recognized by the Louisiana Natural Heritage Program. Unpublished document. Louisiana Department of Wildlife and Fisheries, Natural Heritage Program, Baton Rouge. 2 pp.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES200.876 Temperate Pacific Freshwater Aquatic Bed
CES202.018 Central Interior Highlands and Appalachian Sinkhole and Depression Pond
CES202.694 North-Central Interior Floodplain
CES203.541 Texas-Louisiana Coastal Prairie Pondshore


NatureServe Conservation Status
Global Status: G4? (19Sep2001)
Rounded Global Status: G4 - Apparently Secure
Reasons: This open water vegetation with floating leaves occurs in lakes, ponds, and slow streams. Its habitat may be vulnerable to invasion by non-native aquatic plant species such as water hyacinth (Eichhornia crassipes).

Distribution
Color legend for Distribution Map
United States Distribution: AL, AR, FL, GA, KY, LA, MS, OK, SC, TX
Canadian Province Distribution: QCpotentially occurs
Global Distribution: Canada, United States
Global Range: This community is found throughout the southeastern United States, from Georgia to Texas and in the interior to Kentucky, Oklahoma, and Arkansas.

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Subtropical Division
Province Name: Southeastern Mixed Forest Province
Province Code: 231 Occurrence Status: Confident or certain
Section Name: Southern Appalachian Piedmont Section
Section Code: 231A Occurrence Status: Possible
Section Name: Coastal Plain Middle Section
Section Code: 231B Occurrence Status: Predicted or probable
Section Name: Middle Coastal Plains, Western Section
Section Code: 231E Occurrence Status: Predicted or probable
Section Name: Eastern Gulf Prairies and Marshes Section
Section Code: 231F Occurrence Status: Confident or certain
Province Name: Outer Coastal Plain Mixed Forest Province
Province Code: 232 Occurrence Status: Confident or certain
Section Name: Coastal Plains and Flatwoods, Lower Section
Section Code: 232B Occurrence Status: Confident or certain
Section Name: Atlantic Coastal Flatwoods Section
Section Code: 232C Occurrence Status: Predicted or probable
Section Name: Florida Coastal Lowlands (Western) Section
Section Code: 232D Occurrence Status: Predicted or probable
Section Name: Louisiana Coast Prairies and Marshes Section
Section Code: 232E Occurrence Status: Predicted or probable
Section Name: Coastal Plains and Flatwoods, Western Gulf Section
Section Code: 232F Occurrence Status: Predicted or probable
Section Name: Florida Coastal Lowlands (Eastern) Section
Section Code: 232G Occurrence Status: Confident or certain
Division Name: Prairie Division
Province Name: Prairie Parkland (Subtropical) Province
Province Code: 255 Occurrence Status: Predicted or probable
Section Name: Central Gulf Prairies and Marshes Section
Section Code: 255D Occurrence Status: Predicted or probable
Division Name: Hot Continental Regime Mountains
Province Name: Ozark Broadleaf Forest - Meadow Province
Province Code: M222 Occurrence Status: Confident or certain
Section Name: Boston Mountains Section
Section Code: M222A Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: Brasenia schreberi, a floating aquatic native to Florida that has become naturalized throughout much of the eastern and western U.S. and Canada, is the dominant plant species; other species may include Leersia oryzoides, Lemna valdiviana, Juncus effusus, Stuckenia pectinata (= Potamogeton pectinatus), Nymphaea odorata, and Spirodela polyrrhiza. Other floating aquatics present include Nelumbo lutea, Nymphaea odorata, Nymphaea mexicana, and Utricularia spp., along with submersed aquatics such as Cabomba caroliniana and Ceratophyllum demersum and rooted aquatics such as Pontederia cordata and Zizaniopsis miliacea.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Brasenia schreberi G4 Aquatic herb Floating aquatic  
 
 


Environmental Setting

Wetland Indicator: Y
Environmental Summary: This vegetation occurs in a range of natural ponds and impoundments, including ponds, beaver ponds, and lake margins.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): B. Hoagland
Element Description Edition Date: 06Jun2011
Element Description Author(s): B. Hoagland
NatureServe Conservation Status Factors Edition Date: 11Dec1998
NatureServe Conservation Status Factors Author(s): R.L. Turner

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


References
  • Ambrose, J. 1990a. Georgia's natural communities--A preliminary list. Unpublished document. Georgia Natural Heritage Inventory. 5 pp.

  • Aulbach-Smith, C. Personal communication. Botanical Services of SC.

  • CDPNQ [Centre de données sur le patrimoine naturel du Québec]. No date. Unpublished data. Centre de données sur le patrimoine naturel du Québec, Québec.

  • Christy, J. A. 2004. Native freshwater wetland plant associations of northwestern Oregon. Oregon Natural Heritage Information Center, Oregon State University, Portland, OR.

  • Hoagland, B. 2000. The vegetation of Oklahoma: A classification for landscape mapping and conservation planning. The Southwestern Naturalist 45(4):385-420.

  • Hoagland, B. W. 1997. Preliminary plant community classification for Oklahoma. Unpublished draft document, version 35629. University of Oklahoma, Oklahoma Natural Heritage Inventory, Norman. 47 pp.

  • Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2000-2004. Classification of native vegetation of Oregon. Oregon Natural Heritage Program, Portland. 63 pp.

  • Kunze, L. M. 1994. Preliminary classification of native, low elevation, freshwater wetland vegetation in western Washington. Washington State Department of Natural Resources, Natural Heritage Program. 120 pp.

  • LNHP [Louisiana Natural Heritage Program]. 2009. Natural communities of Louisiana. Louisiana Natural Heritage Program, Louisiana Department of Wildlife & Fisheries, Baton Rouge. 46 pp. [http://www.wlf.louisiana.gov/sites/default/files/pdf/page_wildlife/6776-Rare%20Natural%20Communities/LA_NAT_COM.pdf]

  • Schotz, Al. Personal communication. Community Ecologist. Alabama Natural Heritage Program. Huntingdon College, Massey Hall, 1500 East Fairview Avenue, Montgomery, AL 36106-2148.

  • Smith, L. M., compiler. 1996a. Natural plant communities in Louisiana currently recognized by the Louisiana Natural Heritage Program. Unpublished document. Louisiana Department of Wildlife and Fisheries, Natural Heritage Program, Baton Rouge. 2 pp.

  • Southeastern Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Durham, NC.

  • Titus, J. H. 1996. Unpublished vegetation data for French Flat, Bruno Meadows, Hill Creek, and Tater Hill. Oregon Natural Heritage Program, The Nature Conservancy, Portland.

  • WNHP [Washington Natural Heritage Program]. No date. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.


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