085-BULL-0025P
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:12830-{99965F38-6B9B-4BD5-A029-922CD1C05D1C} » Citing info
Plot ID Fields:
Author Plot Code	085-BULL-0025P
Author Observation Code	085-BULL-0025P
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	10 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	263 m
Slope Aspect	(n/a, flat) º
Slope Gradient	3 º
Topographic Position	crest/interfluve
Landform	ridge/interfluve
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	xeric
Soil Drainage	rapidly drained
Methods Fields:
Observation Start Date	12-Jul-2001
Observation End Date	12-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	16 m
Shrub Height	6 m
Field Height	5 m
Tree Cover	80 %
Shrub Cover	80 %
Field Cover	30 %
Nonvascular Cover	1 %
Misc Fields:
Observation Narrative	Plot location: near summit of knob on east ridge of Bull Run Mountain, 1.97 km SSE of Hopewell Gap. Marked by a metal tree tag. See form/report for sketch. No surface rocks present. This very dry, infertile, ridge-crest habitat burned approximately 20 to 30 years ago and almost certainly has a long history of periodic fires. One of the more extensive and well-developed pine-dominated forests in the Bull Run mountains occupies this site. Pinus rigida, Pinus strobus, and Pinus virginiana all occur, with major associates of Quercus montana and the scrubby Quercus marilandica. A very dense (>80% cover) shrub complex of Kalmia latifolia and deciduous ericads grows beneath the stunted (max. height = 16 m) trees. Currently, about 10 cm of duff and root-rich humus overlies rocky mineral soil at this site, nearly precluding the establishment of any herbaceous species.

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 Pinus rigida Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   Pinus rigida **   -all-   62.5 % 8       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     2 stem(s) 17.5 cm ± 2.5 cm     5 stem(s) 22.5 cm ± 2.5 cm     6 stem(s) 27.5 cm ± 2.5 cm     4 stem(s) 32.5 cm ± 2.5 cm     2 stem(s) 41.5 cm ± 0.5 cm     1 stem(s) 2 Gaylussacia baccata Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   Gaylussacia baccata **   -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       -none- 4 Vaccinium pallidum Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   -all-   17.5 % 6       -none- 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 # 7.5 cm ± 2.5 cm     2 stem(s) 12.5 cm ± 2.5 cm     1 stem(s) 27.5 cm ± 2.5 cm     1 stem(s) 32.5 cm ± 2.5 cm     3 stem(s) 37.5 cm ± 2.5 cm     1 stem(s) 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 # 3.75 cm ± 1.25 cm     2 stem(s) 7.5 cm ± 2.5 cm     2 stem(s) 12.5 cm ± 2.5 cm     1 stem(s) 7 Pinus strobus Pinus strobus **   Pinus strobus **   Pinus strobus **   Pinus strobus **   Pinus strobus **   Pinus strobus **   Pinus strobus **   Pinus strobus **   -all-   7.5 % 5       -none- 8 Amelanchier arborea Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     2 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 # 7.5 cm ± 2.5 cm     1 stem(s) 10 Pinus virginiana Pinus virginiana **   Pinus virginiana **   Pinus virginiana **   Pinus virginiana **   Pinus virginiana **   Pinus virginiana **   Pinus virginiana **   Pinus virginiana **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s) 11 Quercus rubra Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   -all-   0.505 % 2       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 12 Chimaphila maculata Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   Chimaphila maculata **   -all-   0.505 % 2       -none- 13 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- 14 Quercus velutina Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   Quercus velutina **   -all-   0.505 % 2       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 15 Castanea dentata Castanea dentata **   Castanea dentata **   Castanea dentata **   Castanea dentata **   Castanea dentata **   Castanea dentata **   Castanea dentata **   Castanea dentata **   -all-   0.505 % 2       -none-
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Stratum Definitions:
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