085-PAMR-0023
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15065-{C1D72D41-F424-4F76-946E-C6A91E49B55C} » Citing info
Plot ID Fields:
Author Plot Code	085-PAMR-0023
Author Observation Code	085-PAMR-0023
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	38 º
Longitude	-77 º
State or Province	Virginia
Named Places	county: New Kent region|state|province: Virginia
Layout Fields:
DSG Polygon	10 x 10 m
Area	100 m²
Permanence	not permanent
Environment Fields:
Elevation	0 m
Slope Aspect	(n/a, flat) º
Topographic Position	plain/level/bottom
Landform	tidal flat
Hydrologic Regime	tidal - regularly flooded
Soil Moisture Regime	hydric
Soil Drainage	very poorly drained
Water Salinity	freshwater
Methods Fields:
Observation Start Date	30-Sep-1998
Observation End Date	30-Sep-1998
Project	Virginia Heritage
Cover Method	Carolina Vegetation Survey
Stratum Method	No Strata
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
Plot Quality Fields:
Plot Validation Level	(2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields:
Field Height	1 m
Field Cover	70 %
Misc Fields:
Observation Narrative	Extensive (2 - 3 ha) low marsh dominated by Pontederia cordata, Leersia oryzoides and Polygonum punctatum, surrounded by taller Zizania aquatica ca. 150 m from Big Creek. Vegetation height and composition vary somewhat and seem to reflect complex hydrology. More open, wetter and possibly deeper microsites support shorter Peltandra virginica, with lesser amounts of Polygonum, Leersia and Sagittaria latifolia. Taller vegetation, dominated by Pontederia, Leersia and Polygonum, with scattered Zizania, prevails in more extensive, possibly higher areas that may drain more rapidly. Ca. 10 cm of standing water present some 2 hr after high tide. Several culms of Echinochloa walteri observed in vicinity of plot.

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 Leersia oryzoides Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   -all-   37.5 % 7       -none- 2 Pontederia cordata var. cordata Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   Pontederia cordata var. cordata **   -all-   17.5 % 6       -none- 3 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-   17.5 % 6       -none- 4 Peltandra virginica Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   -all-   3.5 % 4       -none- 5 Murdannia keisak Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   Murdannia keisak **   -all-   0.505 % 2       -none- 6 Lycopus americanus Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   Lycopus americanus **   -all-   0.505 % 2       -none- 7 Zizania aquatica var. aquatica Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   Zizania aquatica var. aquatica **   -all-   0.505 % 2       -none- 8 Sium suave Sium suave **   Sium suave **   Sium suave **   Sium suave **   Sium suave **   Sium suave **   Sium suave **   Sium suave **   -all-   0.05 % 1       -none- 9 Sagittaria latifolia Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   Sagittaria latifolia **   -all-   0.05 % 1       -none- 10 Cuscuta gronovii Cuscuta gronovii **   Cuscuta gronovii **   Cuscuta gronovii **   Cuscuta gronovii **   Cuscuta gronovii **   Cuscuta gronovii **   Cuscuta gronovii **   Cuscuta gronovii **   -all-   0.05 % 1       -none- 11 Amaranthus cannabinus Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   -all-   0.05 % 1       -none- 12 Bidens laevis Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   -all-   0.05 % 1       -none- 13 Bidens trichosperma Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   Bidens trichosperma **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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