085-GFNP-0004
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:13640-{40B81359-82C9-4D3F-A42B-21CAF3E5A43C} » Citing info
Plot ID Fields:
Author Plot Code	085-GFNP-0004
Author Observation Code	085-GFNP-0004
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	39 º
Longitude	-77 º
State or Province	Virginia
Named Places	county: Fairfax county: Fairfax region|state|province: Virginia
Layout Fields:
DSG Polygon	16 x 25 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	47 m
Slope Aspect	(n/a, flat) º
Slope Gradient	0 º
Topographic Position	plain/level/bottom
Landform	seep/swale/non-alluvial bottom
Hydrologic Regime	non-tidal - saturated
Soil Moisture Regime	hygric
Soil Drainage	poorly drained
Methods Fields:
Observation Start Date	14-May-2003
Observation End Date	14-May-2003
Project	Virginia Heritage
Cover Method	Carolina Vegetation Survey
Stratum Method	No Strata
Stem Size Limit	2.5 cm
Method Narrative	Releve Virginia Division of Natural Heritage, see http://www.dcr.virginia.gov/natural_heritage/documents/nh_plotform_instructions.pdf
Overall Taxon Cover Values are Automatically Calculated?	no
Stem Observation Area	400 m²
Plot Quality Fields:
Plot Validation Level	(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
Tree Height	23 m
Shrub Height	6 m
Field Height	2 m
Tree Cover	95 %
Shrub Cover	30 %
Field Cover	90 %
Nonvascular Cover	5 %
Misc Fields:
Observation Narrative	Plot is located west of the "Swamp Trail" and is positioned in the wetter central part of a large forested wetland. The site is located on a bedrock terrace above the Potomac River and likely represents an oxbow of a Pleistocene channel of the river. Abundant groundwater draining through adjacent slopes on both sides is apparently forced to the surface by the underlying bedrock stratigraphy of the terrace (A.H. Fleming, pers. comm.). This is one of the largest seepage swamps in the Virginia Piedmont, covering approximately 25 acres. Symplocarpus foetidus dominates the vernal aspect of the herb layer while Saururus cernuus assumes dominance in the summer. This site may be inundated by rare, catastrophic (100-year class) floods. Mean groundwater pH (6 samples) = 5.75. Mean groundwater temperature (deg. C, 6 samples) = 14.41.

Taxa occurring on this plot-observation
Change plant label: --Choose a value-- Author's plant name Original Interpretation, full Scientific Name Original Interpretation, Scientific Name without authors Original Interpretation, USDA Code Original Interpretation, Common Name Current Interpretation, full Scientific Name Current Interpretation, Scientific Name without authors Current Interpretation, USDA Code Current Interpretation, Common Name
Change Strata Shown: --choose one-- show strata (no strata on this plot) show overall cover show strata + overall
ord Author Plant Name Original Interpretation, full Scientific Name Original Interpretation, Scientific Name without authors Original Interpretation, Common Name Original Interpretation, USDA Code Current Interpretation, full Scientific Name Current Interpretation, Scientific Name without authors Current Interpretation, Common Name Current Interpretation, USDA Code Stratum Cover Original Cover Code Basal Area Biomass Inference Area Stems: Stem Diameters (graphically): 1 Acer rubrum Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   -all-   87.5 % 9       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     2 stem(s) 12.5 cm ± 2.5 cm     1 stem(s) 17.5 cm ± 2.5 cm     1 stem(s) 27.5 cm ± 2.5 cm     2 stem(s) 32.5 cm ± 2.5 cm     3 stem(s) 37.5 cm ± 2.5 cm     1 stem(s) 42.5 cm ± 0.5 cm     1 stem(s) 46.5 cm ± 0.5 cm     1 stem(s) 2 Symplocarpus foetidus Symplocarpus foetidus **   Symplocarpus foetidus **   Symplocarpus foetidus **   Symplocarpus foetidus **   Symplocarpus foetidus **   Symplocarpus foetidus **   Symplocarpus foetidus **   Symplocarpus foetidus **   -all-   62.5 % 8       -none- 3 Ilex verticillata Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     3 stem(s) 4 Osmundastrum cinnamomeum var. cinnamomeum Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   Osmundastrum cinnamomeum var. cinnamomeum **   -all-   17.5 % 6       -none- 5 Vaccinium fuscatum Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   -all-   7.5 % 5       -none- 6 Saururus cernuus Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   -all-   3.5 % 4       -none- 7 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s) 8 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   1.5 % 3       -none- 9 Arisaema triphyllum Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   -all-   1.5 % 3       -none- 10 Lindera benzoin Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   Lindera benzoin **   -all-   1.5 % 3       -none- 11 Peltandra virginica Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   -all-   0.505 % 2       -none- 12 Polystichum acrostichoides Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   Polystichum acrostichoides **   -all-   0.505 % 2       -none- 13 Carex radiata Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   -all-   0.505 % 2       -none- 14 Asimina triloba Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   -all-   0.505 % 2       -none- 15 Viburnum dentatum var. dentatum Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   Viburnum dentatum var. dentatum **   -all-   0.505 % 2       -none- 16 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   0.505 % 2       -none- 17 Rubus pensilvanicus Rubus pensilvanicus **   Rubus pensilvanicus **   Rubus pensilvanicus **   Rubus pensilvanicus **   Rubus pensilvanicus **   Rubus pensilvanicus **   Rubus pensilvanicus **   Rubus pensilvanicus **   -all-   0.505 % 2       -none- 18 Parthenocissus quinquefolia Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   -all-   0.505 % 2       -none- 19 Impatiens capensis Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   -all-   0.505 % 2       -none- 20 Osmunda spectabilis Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   Osmunda spectabilis **   -all-   0.505 % 2       -none- 21 Carex albolutescens Carex albolutescens **   Carex albolutescens **   Carex albolutescens **   Carex albolutescens **   Carex albolutescens **   Carex albolutescens **   Carex albolutescens **   Carex albolutescens **   -all-   0.505 % 2       -none- 22 Symphyotrichum lateriflorum Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   -all-   0.505 % 2       -none- 23 Onoclea sensibilis var. sensibilis Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   Onoclea sensibilis var. sensibilis **   -all-   0.505 % 2       -none- 24 Thelypteris palustris var. pubescens Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   Thelypteris palustris var. pubescens **   -all-   0.505 % 2       -none- 25 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   0.505 % 2       -none- 26 Scutellaria lateriflora Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   Scutellaria lateriflora **   -all-   0.505 % 2       -none- 27 Sanicula canadensis Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   -all-   0.505 % 2       -none- 28 Viburnum nudum Viburnum nudum **   Viburnum nudum **   Viburnum nudum **   Viburnum nudum **   Viburnum nudum **   Viburnum nudum **   Viburnum nudum **   Viburnum nudum **   -all-   0.505 % 2       -none- 29 Circaea canadensis ssp. canadensis Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   Circaea canadensis ssp. canadensis **   -all-   0.505 % 2       -none- 30 Lycopus virginicus Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   -all-   0.505 % 2       -none- 31 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   0.505 % 2       -none- 32 Cinna arundinacea Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   -all-   0.505 % 2       -none- 33 Cardamine pensylvanica Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   Cardamine pensylvanica **   -all-   0.505 % 2       -none- 34 Persicaria longiseta Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   -all-   0.505 % 2       -none- 35 Brachyelytrum erectum Brachyelytrum erectum **   Brachyelytrum erectum **   Brachyelytrum erectum **   Brachyelytrum erectum **   Brachyelytrum erectum **   Brachyelytrum erectum **   Brachyelytrum erectum **   Brachyelytrum erectum **   -all-   0.505 % 2       -none- 36 Persicaria arifolia Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   -all-   0.505 % 2       -none- 37 Carex debilis Carex debilis **   Carex debilis **   Carex debilis **   Carex debilis **   Carex debilis **   Carex debilis **   Carex debilis **   Carex debilis **   -all-   0.505 % 2       -none- 38 Viola cucullata Viola cucullata **   Viola cucullata **   Viola cucullata **   Viola cucullata **   Viola cucullata **   Viola cucullata **   Viola cucullata **   Viola cucullata **   -all-   0.505 % 2       -none- 39 Athyrium asplenioides Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   -all-   0.505 % 2       -none- 40 Parathelypteris noveboracensis Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   Parathelypteris noveboracensis **   -all-   0.505 % 2       -none- 41 Dendrolycopodium obscurum Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   Dendrolycopodium obscurum **   -all-   0.505 % 2       -none- 42 Dryopteris cristata Dryopteris cristata **   Dryopteris cristata **   Dryopteris cristata **   Dryopteris cristata **   Dryopteris cristata **   Dryopteris cristata **   Dryopteris cristata **   Dryopteris cristata **   -all-   0.505 % 2       -none- 43 Geum canadense Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   -all-   0.505 % 2       -none- 44 Lilium superbum Lilium superbum **   Lilium superbum **   Lilium superbum **   Lilium superbum **   Lilium superbum **   Lilium superbum **   Lilium superbum **   Lilium superbum **   -all-   0.05 % 1       -none- 45 Pilea pumila Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   -all-   0.05 % 1       -none- 46 Juncus effusus var. solutus Juncus effusus var. solutus **   Juncus effusus var. solutus **   Juncus effusus var. solutus **   Juncus effusus var. solutus **   Juncus effusus var. solutus **   Juncus effusus var. solutus **   Juncus effusus var. solutus **   Juncus effusus var. solutus **   -all-   0.05 % 1       -none- 47 Amphicarpaea bracteata Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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