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Lemna spp. - Wolffia spp. - Spirodela polyrrhiza Aquatic Vegetation Alliance | NatureServe Biotics 2019
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Name: Lemna spp. - Wolffia spp. - Spirodela polyrrhiza Aquatic Vegetation Alliance Reference: NatureServe Biotics 2019 Description: This aquatic association of floating vegetation is known to occur throughout temperate eastern North America. <i>Lemna</i> spp. <i>Spirodela polyrrhiza</i>, and <i>Wolffia</i> spp. typically dominate but may be mixed with other plant taxa. These small plants may float on the water's surface or become stranded and possibly rooted during drawdown periods. The composition of examples varies across this wide distributional range. Associated rooted floating aquatics include <i>Potamogeton</i> spp., <i>Sagittaria</i> spp., or <i>Polygonum</i> spp. While these latter species are rooted submerged species, and technically not part of the strictly floating community, they do intermingle. Biomass can be abundant under eutrophic conditions. This alliance occupies wetlands that are permanently, semipermanently or seasonally flooded. Water chemistry is fresh. The standing water habitat is relatively shallow, generally less than 2-4 m and occurs as ponds, lakes, ditches, stock ponds, and backwater sloughs of river and stream channels. Standing water for much or most of the growing season is characteristic. Depth of the water is of no consequence to floating plants; they occur where the wind pushes them.  Accession Code: urn:lsid:vegbank.org:commConcept:39346-{9CEA6BBF-9BF2-44A9-825E-E4660032452B} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 18-Dec-2014 to: ongoing
	status: accepted Community's Parent: Nymphaea odorata - Stuckenia pectinata - Potamogeton spp. Freshwater Aquatic Vegetation Group This Community's Level: Alliance This Community's Children: Show/Hide   Lemna spp. Eastern North American Aquatic Vegetation		Names:   UID: ELEMENT_GLOBAL.2.934901 NatureServe Explorer   Code: A4147   Translated: Duckweed species - Watermeal species - Common Duckmeat Aquatic Vegetation Alliance   Common: Duckweed Aquatic Vegetation   Scientific: Lemna spp. - Wolffia spp. - Spirodela polyrrhiza Aquatic Vegetation Alliance