085-BULL-0029P
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:12834-{5EA2B07A-378F-4B28-9BA2-37BFD5072E0F} » Citing info
Plot ID Fields:
Author Plot Code	085-BULL-0029P
Author Observation Code	085-BULL-0029P
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	39 º
Longitude	-78 º
State or Province	Virginia
Named Places	county: Prince William region|state|province: Virginia
Layout Fields:
DSG Polygon	16 x 25 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	344 m
Slope Aspect	254 º
Slope Gradient	12 º
Topographic Position	upper slope
Landform	side slope
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	xeric
Soil Drainage	well drained
Methods Fields:
Observation Start Date	17-Jul-2001
Observation End Date	17-Jul-2001
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	14 m
Shrub Height	6 m
Field Height	5 m
Tree Cover	70 %
Shrub Cover	70 %
Field Cover	70 %
Nonvascular Cover	0.5 %
Misc Fields:
Observation Narrative	Plot location: ca. 30 m west of ridge crest on east ridge of Bull Run Mountain, 2.46 km NE of Hopewell Gap. Marked with a metal tree tag. See form/report for sketch. Rock types present: massive, thick-bedded quartzite boulders and fragments. The vegetation in this plot was formerly co-dominated by Quercus montana and Pinus rigida, which probably indicated frequent or severe past fires on this very dry, upper-slope site. However, all overstory pines were killed within the last decade by an outbreak of southern pine beetles (Dendroctonus frontalis). The residual stand is characterized by widely spaced, stunted (<15 m tall) Quercus montana, with a dense shrub understory dominated by Gaylussacia baccata and Kalmia latifolia. The shrubby Quercus marilandica is frequent in this and similar ridge-crest forests on the east ridge of Bull Run Mountain. Soils here are extremely oligotrophic, species richness is very low (n=15), and herbaceous plants are nearly lacking.

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-   62.5 % 8       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     4 stem(s) 17.5 cm ± 2.5 cm     5 stem(s) 22.5 cm ± 2.5 cm     3 stem(s) 32.5 cm ± 2.5 cm     4 stem(s) 2 Vaccinium pallidum Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   -all-   62.5 % 8       -none- 3 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     3 stem(s) 4 Gaylussacia baccata Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   -all-   37.5 % 7       -none- 5 Vaccinium stamineum Vaccinium stamineum **   Vaccinium stamineum **   Vaccinium stamineum **   Vaccinium stamineum **   Vaccinium stamineum **   Vaccinium stamineum **   Vaccinium stamineum **   Vaccinium stamineum **   -all-   7.5 % 5       -none- 6 Quercus marilandica var. marilandica Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   Quercus marilandica var. marilandica **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s) 7 Quercus velutina Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 22.5 cm ± 2.5 cm     1 stem(s) 8 Smilax glauca Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   Smilax glauca **   -all-   1.5 % 3       -none- 9 Pteridium aquilinum ssp. latiusculum Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   Pteridium aquilinum ssp. latiusculum **   -all-   0.505 % 2       -none- 10 Rhododendron periclymenoides Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   Rhododendron periclymenoides **   -all-   0.505 % 2       -none- 11 Diospyros virginiana Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   Diospyros virginiana **   -all-   0.505 % 2       -none- 12 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   0.505 % 2       -none- 13 Fagus grandifolia Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   Fagus grandifolia **   -all-   0.505 % 2       -none- 14 Pinus rigida Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   -all-   0.505 % 2       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 15 Quercus coccinea Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   Quercus coccinea **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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