085-RIVB-0013
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15390-{86F94126-3EE5-4AA7-8338-998532F140AB} » Citing info
Plot ID Fields:
Author Plot Code	085-RIVB-0013
Author Observation Code	085-RIVB-0013
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	77 m
Slope Aspect	340 º
Slope Gradient	8 º
Topographic Position	upper slope
Landform	ridge/interfluve
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	somewhat xeric
Soil Drainage	well drained
Methods Fields:
Observation Start Date	22-Jun-2004
Observation End Date	22-Jun-2004
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	32 m
Shrub Height	4 m
Field Height	4 m
Tree Cover	80 %
Shrub Cover	60 %
Field Cover	0.5 %
Nonvascular Cover	1 %
Misc Fields:
Observation Narrative	This convex, sheet-eroded upper slope supports a floristically depauperate oak/ mountain-laurel forest. Quercus montana is the most abundant overstory tree, with Quercus alba and Quercus coccinea also present in significant numbers. Young Fagus grandifolia appears to be invading the understory, along with Ilex opaca, Acer rubrum, and Nyssa syvlatica. There is very little oak recruitment, and true herbs are nearly absent.

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 Quercus montana Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 17.5 cm ± 2.5 cm     2 stem(s) 32.5 cm ± 2.5 cm     1 stem(s) 78.5 cm ± 0.5 cm     1 stem(s) 2 Kalmia latifolia Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   Kalmia latifolia **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     26 stem(s) 7.5 cm ± 2.5 cm     2 stem(s) 3 Nyssa sylvatica Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     4 stem(s) 7.5 cm ± 2.5 cm     3 stem(s) 17.5 cm ± 2.5 cm     1 stem(s) 4 Quercus alba Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 37.5 cm ± 2.5 cm     1 stem(s) 49.5 cm ± 0.5 cm     1 stem(s) 5 Fagus grandifolia Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     4 stem(s) 7.5 cm ± 2.5 cm     2 stem(s) 12.5 cm ± 2.5 cm     2 stem(s) 6 Quercus rubra Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     1 stem(s) 52.5 cm ± 0.5 cm     1 stem(s) 7 Quercus coccinea Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 58.5 cm ± 0.5 cm     1 stem(s) 8 Ilex opaca var. opaca Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   Ilex opaca var. opaca **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     3 stem(s) 12.5 cm ± 2.5 cm     1 stem(s) 9 Acer rubrum Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     2 stem(s) 10 Sassafras albidum Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   Sassafras albidum **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 11 Asimina triloba Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   -all-   1.5 % 3       -none- 12 Vaccinium fuscatum Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   Vaccinium fuscatum **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 13 Isotria verticillata Isotria verticillata **   Isotria verticillata **   Isotria verticillata **   Isotria verticillata **   Isotria verticillata **   Isotria verticillata **   Isotria verticillata **   Isotria verticillata **   -all-   0.505 % 2       -none- 14 Parthenocissus quinquefolia Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   -all-   0.505 % 2       -none- 15 Liriodendron tulipifera Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   -all-   0.505 % 2       -none- 16 Smilax glauca Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   -all-   0.05 % 1       -none- 17 Prunus serotina var. serotina Prunus serotina var. serotina **   Prunus serotina var. serotina **   Prunus serotina var. serotina **   Prunus serotina var. serotina **   Prunus serotina var. serotina **   Prunus serotina var. serotina **   Prunus serotina var. serotina **   Prunus serotina var. serotina **   -all-   0.05 % 1       -none- 18 Chimaphila maculata Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   -all-   0.05 % 1       -none- 19 Prunus avium Prunus avium **   Prunus avium **   Prunus avium **   Prunus avium **   Prunus avium **   Prunus avium **   Prunus avium **   Prunus avium **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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