085-MNBP-0016
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:14858-{00053208-120C-4B17-AF0C-270F0DF3F04D} » Citing info
Plot ID Fields:
Author Plot Code	085-MNBP-0016
Author Observation Code	085-MNBP-0016
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Confidentiality Status	100 km radius (nearest degree)
Latitude	39 º
Longitude	-78 º
State or Province	Virginia
Named Places	county: Prince William region|state|province: Virginia
Layout Fields:
DSG Polygon	10 x 40 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	54 m
Slope Aspect	(n/a, flat) º
Slope Gradient	1 º
Topographic Position	plain/level/bottom
Landform	alluvial flat/alluvial terrace/floodplain
Hydrologic Regime	non-tidal - seasonally flooded
Soil Moisture Regime	subhydric
Soil Drainage	poorly drained
Methods Fields:
Observation Start Date	07-Jul-2000
Observation End Date	07-Jul-2000
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	30 m
Misc Fields:
Observation Narrative	Plot location: Floodplain slough at edge of Bull Run floodplain, 0.8 miles NNW of Stone Bridge on US 29. Rock Types Present: A few siltstone fragments. An elongate (10 X 40m) plot configuration was used to sample this seasonally flooded backswamp slough, which was well drawn-down on the date of visit. The deepest portion of the slough (max. flooding depth = 50 cm) does not support trees, although overhanging Fraxinus pensylvanica shade a substantial portion of the habitat. The more deeply flooded portions of this site support large, nearly monospecific patches of Saururus cernuus while slightly higher hummocks and edges support mixed wetland graminoids and forbs.

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 Fraxinus pennsylvanica Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   -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     2 stem(s) 17.5 cm ± 2.5 cm     3 stem(s) 22.5 cm ± 2.5 cm     2 stem(s) 27.5 cm ± 2.5 cm     2 stem(s) 32.5 cm ± 2.5 cm     2 stem(s) 37.5 cm ± 2.5 cm     3 stem(s) 40.5 cm ± 0.5 cm     1 stem(s) 42.5 cm ± 0.5 cm     1 stem(s) 2 Saururus cernuus Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   Saururus cernuus **   -all-   37.5 % 7       -none- 3 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     1 stem(s) 12.5 cm ± 2.5 cm     3 stem(s) 17.5 cm ± 2.5 cm     1 stem(s) 27.5 cm ± 2.5 cm     1 stem(s) 4 Cinna arundinacea Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   -all-   7.5 % 5       -none- 5 Carex tribuloides Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   -all-   3.5 % 4       -none- 6 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 7 Carex lupulina Carex lupulina **   Carex lupulina **   Carex lupulina **   Carex lupulina **   Carex lupulina **   Carex lupulina **   Carex lupulina **   Carex lupulina **   -all-   3.5 % 4       -none- 8 Carex stipata var. maxima Carex stipata var. maxima **   Carex stipata var. maxima **   Carex stipata var. maxima **   Carex stipata var. maxima **   Carex stipata var. maxima **   Carex stipata var. maxima **   Carex stipata var. maxima **   Carex stipata var. maxima **   -all-   3.5 % 4       -none- 9 Glyceria striata var. striata Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   Glyceria striata var. striata **   -all-   3.5 % 4       -none- 10 Glyceria septentrionalis Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   Glyceria septentrionalis **   -all-   1.5 % 3       -none- 11 Impatiens capensis Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   -all-   1.5 % 3       -none- 12 Persicaria hydropiperoides Persicaria hydropiperoides **   Persicaria hydropiperoides **   Persicaria hydropiperoides **   Persicaria hydropiperoides **   Persicaria hydropiperoides **   Persicaria hydropiperoides **   Persicaria hydropiperoides **   Persicaria hydropiperoides **   -all-   1.5 % 3       -none- 13 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   1.5 % 3       -none- 14 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   1.5 % 3       -none- 15 Lycopus virginicus Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   -all-   1.5 % 3       -none- 16 Geum canadense Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   -all-   1.5 % 3       -none- 17 Poa trivialis Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   -all-   1.5 % 3       -none- 18 Cephalanthus occidentalis Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   -all-   0.505 % 2       -none- 19 Leersia virginica Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   -all-   0.505 % 2       -none- 20 Ludwigia palustris Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   Ludwigia palustris **   -all-   0.505 % 2       -none- 21 Pilea pumila Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   Pilea pumila **   -all-   0.505 % 2       -none- 22 Rumex verticillatus Rumex verticillatus **   Rumex verticillatus **   Rumex verticillatus **   Rumex verticillatus **   Rumex verticillatus **   Rumex verticillatus **   Rumex verticillatus **   Rumex verticillatus **   -all-   0.505 % 2       -none- 23 Poa autumnalis Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   Poa autumnalis **   -all-   0.505 % 2       -none- 24 Alisma subcordatum Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   Alisma subcordatum **   -all-   0.505 % 2       -none- 25 Symphyotrichum lateriflorum Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   -all-   0.505 % 2       -none- 26 Carex grayi Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   -all-   0.505 % 2       -none- 27 Quercus palustris Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   -all-   0.505 % 2       -none-
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Stratum Definitions:
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