085-GFNP-0019
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:13655-{4E9F923F-78E7-4F17-9721-E40DEB8AEC5A} » Citing info
Plot ID Fields:
Author Plot Code	085-GFNP-0019
Author Observation Code	085-GFNP-0019
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	8 x 12.5 m
Area	100 m²
Permanence	not permanent
Environment Fields:
Elevation	42 m
Slope Aspect	(n/a, flat) º
Slope Gradient	0 º
Topographic Position	plain/level/bottom
Landform	channel shelf/stream margin/bar
Hydrologic Regime	non-tidal - seasonally flooded
Soil Moisture Regime	hydric
Soil Drainage	poorly drained
Methods Fields:
Observation Start Date	26-Aug-2003
Observation End Date	26-Aug-2003
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	5 m
Field Cover	35 %
Nonvascular Cover	1 %
Misc Fields:
Observation Narrative	Plot captures a channel shelf outcrop/boulder bar overwhelmingly dominated by Justicia americana. This vegetation is nearly monospecific, with just two additional species present at low cover in the 100 sq. m. plot. Large tree trunks deposited haphazardly on outcrops just upstream of plot attest to the power of floods that periodically impact this habitat. The plot area is inundated by normal river levels for prolonged periods during the winter and spring months.

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 Justicia americana Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   Justicia americana **   -all-   37.5 % 7       -none- 2 Persicaria amphibia Persicaria amphibia **   Persicaria amphibia **   Persicaria amphibia **   Persicaria amphibia **   Persicaria amphibia **   Persicaria amphibia **   Persicaria amphibia **   Persicaria amphibia **   -all-   1.5 % 3       -none- 3 Hibiscus laevis Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   Hibiscus laevis **   -all-   0.505 % 2       -none-
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Stratum Definitions:
Sorry, no Stratum Definitions found.
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