085-SCRU-0033
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:15462-{1DC8D21E-44B7-40B6-905F-8D87B5A44B28} » Citing info
Plot ID Fields:
Author Plot Code	085-SCRU-0033
Author Observation Code	085-SCRU-0033
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	80 m
Slope Aspect	280 º
Slope Gradient	15 º
Topographic Position	crest/interfluve
Landform	rolling/dissected upland
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	xeric
Soil Drainage	well drained
Methods Fields:
Observation Start Date	24-Jun-2004
Observation End Date	24-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	30 m
Shrub Height	5 m
Field Height	5 m
Tree Cover	80 %
Shrub Cover	70 %
Field Cover	4 %
Nonvascular Cover	1 %
Misc Fields:
Observation Narrative	This plot is representative of dry oak / heath vegetation that occupies a small upland ridge well away from the Potomac River. Growing conditions on this west-facing upper slope are distinctly xeric, and soil samples collected here have exceedingly low base cation levels. Moderate to dense shrub colonies of Kalmia latifolia are characteristic of the stand, which is co-dominated by a mixture of Quercus coccinea, Quercus velutina, Quercus alba, and Quercus montana. Fire has undoubtedly been an important ecological factor at this site in the past. However, the prevalence of mesophytic trees (Acer rubrum, Nyssa sylvatica, Fagus grandifolia, Asimina triloba) in the understory indicates that fire has been absent for at least several decades.

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 Acer rubrum Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   -all-   62.5 % 8       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     5 stem(s) 22.5 cm ± 2.5 cm     2 stem(s) 27.5 cm ± 2.5 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     24 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 3 Quercus coccinea Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 52.5 cm ± 0.5 cm     1 stem(s) 75.5 cm ± 0.5 cm     1 stem(s) 4 Nyssa sylvatica Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   Nyssa sylvatica **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 7.5 cm ± 2.5 cm     7 stem(s) 12.5 cm ± 2.5 cm     3 stem(s) 17.5 cm ± 2.5 cm     3 stem(s) 5 Quercus montana Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 17.5 cm ± 2.5 cm     1 stem(s) 43.5 cm ± 0.5 cm     1 stem(s) 6 Betula lenta var. lenta Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 32.5 cm ± 2.5 cm     1 stem(s) 7 Quercus alba Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 37.5 cm ± 2.5 cm     1 stem(s) 8 Quercus velutina Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 32.5 cm ± 2.5 cm     1 stem(s) 9 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 # 12.5 cm ± 2.5 cm     2 stem(s) 10 Vaccinium pallidum Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   -all-   1.5 % 3       -none- 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 Fagus grandifolia Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   -all-   1.5 % 3       -none- 13 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-   0.505 % 2       -none- 14 Viburnum acerifolium Viburnum acerifolium **   Viburnum acerifolium **   Viburnum acerifolium **   Viburnum acerifolium **   Viburnum acerifolium **   Viburnum acerifolium **   Viburnum acerifolium **   Viburnum acerifolium **   -all-   0.505 % 2       -none- 15 Carex virescens Carex virescens **   Carex virescens **   Carex virescens **   Carex virescens **   Carex virescens **   Carex virescens **   Carex virescens **   Carex virescens **   -all-   0.505 % 2       -none- 16 Amelanchier arborea Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   -all-   0.505 % 2       -none- 17 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   0.505 % 2       -none- 18 Rhododendron periclymenoides Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   -all-   0.505 % 2       -none- 19 Smilax glauca Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   -all-   0.505 % 2       -none- 20 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   0.505 % 2       -none- 21 Liriodendron tulipifera Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   -all-   0.505 % 2       -none- 22 Prunus subhirtella Prunus subhirtella **   Prunus subhirtella **   Prunus subhirtella **   Prunus subhirtella **   Prunus subhirtella **   Prunus subhirtella **   Prunus subhirtella **   Prunus subhirtella **   -all-   0.05 % 1       -none- 23 Chimaphila maculata Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   -all-   0.05 % 1       -none- 24 Diospyros virginiana Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   -all-   0.05 % 1       -none- 25 Celastrus orbiculatus Celastrus orbiculatus **   Celastrus orbiculatus **   Celastrus orbiculatus **   Celastrus orbiculatus **   Celastrus orbiculatus **   Celastrus orbiculatus **   Celastrus orbiculatus **   Celastrus orbiculatus **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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