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CEGL003330 Ludwigia palustris - Polygonum hydropiperoides Aquatic Vegetation
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Marsh Seedbox - Swamp Smartweed Aquatic Vegetation
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: Habitat of this herbaceous vegetation of Oregon and Washington is seasonally flooded eutrophic lakes, ponds, and sloughs at low elevations (3-152 m [10-500 feet]). This association forms extensive stands in shallow seasonal lakes and ponds on floodplains and deflation plains, subject to drying in summer. Soils are seasonally flooded to moist mostly silt loam, some organic. It is more common in interior valleys on Fraxinus latifolia floodplains but occurs sporadically along the coast. Salix lucida ssp. lasiandra is the only tree or shrub present, but it has low constancy and cover because of extensive seasonal ponding. Polygonum hydropiperoides is the primary species with an average cover of 57% and ranges to 99%. It is not always present, and when absent the associated Ludwigia palustris is conspicuous. Ludwigia has a constancy of 63%, an average cover of 34%, and may range to 90%. Eighteen other species in the herb layer occur at low constancy and cover, except for significant patches of Bidens cernua, Sagittaria latifolia, or Leersia oryzoides. Phalaris arundinacea may also form patches but is inhibited by seasonal ponding. The association tolerates eutrophic conditions and flashy hydroperiods associated with urban and agricultural landscapes.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: This association is known from Oregon and Washington.
Nations: US
States/Provinces: OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688338
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 5 Aquatic Vegetation Class | C05 | 5 |
| Subclass | 5.B Freshwater Aquatic Vegetation Subclass | S13 | 5.B |
| Formation | 5.B.2 Temperate to Polar Freshwater Aquatic Vegetation Formation | F057 | 5.B.2 |
| Division | 5.B.2.Na North American Freshwater Aquatic Vegetation Division | D049 | 5.B.2.Na |
| Macrogroup | 5.B.2.Na.2 Rocky Mountain Pond-lily - Pacific Mosquito Fern - Western Waterweed Western North American Freshwater Aquatic Vegetation Macrogroup | M109 | 5.B.2.Na.2 |
| Group | 5.B.2.Na.2.a Pond-lily species - Pondweed species - Duckweed species Freshwater Aquatic Vegetation Group | G544 | 5.B.2.Na.2.a |
| Alliance | A3927 Floating Pondweed - Water Knotweed Aquatic Vegetation Alliance | A3927 | 5.B.2.Na.2.a |
| Association | CEGL003330 Marsh Seedbox - Swamp Smartweed Aquatic Vegetation | CEGL003330 | 5.B.2.Na.2.a |
Concept Lineage: Upgraded to Standard during screening.
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Ludwigia palustris - Polygonum hydropiperoides (McCain and Christy 2005) [16 plots]
= Ludwigia palustris - Polygonum hydropiperoides Association (Christy 2004)
= Ludwigia palustris - Polygonum hydropiperoides Marsh (Titus et al. 1996)
= Ludwigia palustris - Polygonum hydropiperoides community type (Kunze 1994) [(p. 46)]
= Polygonum hydropiperoides - Ludwigia palustris Herbaceous Vegetation (Christy et al. 1998) [not sampled]
= Ludwigia palustris - Polygonum hydropiperoides Association (Christy 2004)
= Ludwigia palustris - Polygonum hydropiperoides Marsh (Titus et al. 1996)
= Ludwigia palustris - Polygonum hydropiperoides community type (Kunze 1994) [(p. 46)]
= Polygonum hydropiperoides - Ludwigia palustris Herbaceous Vegetation (Christy et al. 1998) [not sampled]
- Christy, J. A. 2004. Native freshwater wetland plant associations of northwestern Oregon. Oregon Natural Heritage Information Center, Oregon State University, Portland, OR.
- Christy, J. A., J. S. Kagan, and A. M. Wiedemann. 1998. Plant associations of the Oregon Dunes National Recreation Area - Siuslaw National Forest, Oregon. Technical Paper R6-NR-ECOL-TP-09-98. USDA Forest Service, Pacific Northwest Region, Portland, OR. 196 pp.
- Christy, J. A., and J. A. Putera. 1993. Lower Columbia River Natural Area Inventory, 1992. Oregon Natural Heritage Program, Portland. 75 pp.
- Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 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.
- McCain, C., and J. A. Christy. 2005. Field guide to riparian plant communities in northwestern Oregon. Technical Paper R6-NR-ECOL-TP-01-05. USDA Forest Service, Pacific Northwest Region, Portland. 357 pp.
- Titus, J. H., J. A. Christy, D. Vander Schaaf, J. S. Kagan, and E. R. Alverson. 1996. Native wetland, riparian, and upland plant communities and their biota in the Willamette Valley, Oregon. Report to the Environmental Protection Agency, Region X, Seattle, WA. Willamette Basin Geographic Initiative. Oregon Natural Heritage Program, The Nature Conservancy, Portland, OR.
- WNHP [Washington Natural Heritage Program]. 2018. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.