085-CROW-0009
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:13146-{827CE6F0-461C-4E80-8448-3274D2996B7C} » Citing info
Plot ID Fields:
Author Plot Code	085-CROW-0009
Author Observation Code	085-CROW-0009
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: Stafford region|state|province: Virginia
Layout Fields:
DSG Polygon	5 x 20 m
Area	100 m²
Permanence	not permanent
Environment Fields:
Elevation	1 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	11-Oct-2000
Observation End Date	11-Oct-2000
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	75 %
Misc Fields:
Observation Narrative	Vegetation appears to represent a slightly haline variant of the Eleocharis quadrangulata - Pontederia cordata - (Schoenoplectus pungens, Schoenoplectus tabernaemontani) community type. Stand occupies a typically narrow but extensive zone just landward of the main channel of Accokeek Creek. A rectangular plot design was necessary to capture homogeneous vegetation. Schoenoplectus pungens is more abundant near corners 1 and 2 (downstream end of plot), whereas Eleocharis is more common at the other end. Ca. 5 cm of standing water present at 3:00 PM on a day of unusually low low tide. Sampling was rushed, but species list is believed to be complete.

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 Bidens laevis Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   Bidens laevis **   -all-   17.5 % 6       -none- 2 Bolboschoenus fluviatilis Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   Bolboschoenus fluviatilis **   -all-   17.5 % 6       -none- 3 Schoenoplectus tabernaemontani Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   Schoenoplectus tabernaemontani **   -all-   17.5 % 6       -none- 4 Schoenoplectus pungens var. pungens Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   Schoenoplectus pungens var. pungens **   -all-   7.5 % 5       -none- 5 Hydrilla verticillata Hydrilla verticillata **   Hydrilla verticillata **   Hydrilla verticillata **   Hydrilla verticillata **   Hydrilla verticillata **   Hydrilla verticillata **   Hydrilla verticillata **   Hydrilla verticillata **   -all-   7.5 % 5       -none- 6 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-   3.5 % 4       -none- 7 Leersia oryzoides Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   Leersia oryzoides **   -all-   3.5 % 4       -none- 8 Typha angustifolia Typha angustifolia **   Typha angustifolia **   Typha angustifolia **   Typha angustifolia **   Typha angustifolia **   Typha angustifolia **   Typha angustifolia **   Typha angustifolia **   -all-   3.5 % 4       -none- 9 Peltandra virginica Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   Peltandra virginica **   -all-   3.5 % 4       -none- 10 Eleocharis quadrangulata Eleocharis quadrangulata **   Eleocharis quadrangulata **   Eleocharis quadrangulata **   Eleocharis quadrangulata **   Eleocharis quadrangulata **   Eleocharis quadrangulata **   Eleocharis quadrangulata **   Eleocharis quadrangulata **   -all-   3.5 % 4       -none- 11 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-   0.505 % 2       -none- 12 Persicaria arifolia Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   Persicaria arifolia **   -all-   0.505 % 2       -none- 13 Hibiscus moscheutos Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   Hibiscus moscheutos **   -all-   0.505 % 2       -none- 14 Persicaria punctata Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   Persicaria punctata **   -all-   0.05 % 1       -none- 15 Amaranthus cannabinus Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   Amaranthus cannabinus **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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