085-JRNF-0023
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:14548-{DAE4A84A-D1DC-42AC-9EA2-46E4BD8EDDD3} » Citing info
Plot ID Fields:
Author Plot Code	085-JRNF-0023
Author Observation Code	085-JRNF-0023
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	25 m
Confidentiality Status	100 km radius (nearest degree)
Latitude	37 º
Longitude	-82 º
State or Province	Virginia
Named Places	county: Grayson region|state|province: Virginia
Layout Fields:
DSG Polygon	5 x 20 m
Area	100 m²
Permanence	not permanent
Environment Fields:
Elevation	1673 m
Slope Aspect	170 º
Slope Gradient	15 º
Topographic Position	upper slope
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	submesic
Soil Drainage	well drained
Methods Fields:
Observation Start Date	04-Aug-1999
Observation End Date	04-Aug-1999
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:
Tree Cover	5 %
Shrub Cover	90 %
Field Cover	15 %
Nonvascular Cover	4 %
Misc Fields:
Observation Narrative	The isolated rocky knobs that rise prominently above the general level of Wilburn Ridge support largely shrub dominated vegetation with a few scattered, stunted trees. This plot is compositionally similar to many such shrublands and characterized by almost impenetrable (>75% cover) Rhododendron catawbiense. Forest of the Wilburn Ridge area were reportedly destroyed by logging and fire around 1900. It is not clear to what extent the present day shrublands represent secondary succession following such disturbances. Currently, however, it appears that reproduction and growth of potential successors such as Abies fraseri and Betula allegheniensis are severely limited by the extremely exposed, rocky sites with little or no soil development. Consequently, the shrublands appear to at least represent a long term sere, and it seems possible that the habitat could have supported similar vegetation prior to human disturbance. Plot located on upper south slope of a rocky promontory on Wilburn Ridge, 1.0 mi northwest of Massie Gap.

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 Rhododendron catawbiense Rhododendron catawbiense **   Rhododendron catawbiense **   Rhododendron catawbiense **   Rhododendron catawbiense **   Rhododendron catawbiense **   Rhododendron catawbiense **   Rhododendron catawbiense **   Rhododendron catawbiense **   -all-   87.5 % 9       -none- 2 Sorbus americana Sorbus americana **   Sorbus americana **   Sorbus americana **   Sorbus americana **   Sorbus americana **   Sorbus americana **   Sorbus americana **   Sorbus americana **   -all-   7.5 % 5       -none- 3 Menziesia pilosa Menziesia pilosa **   Menziesia pilosa **   Menziesia pilosa **   Menziesia pilosa **   Menziesia pilosa **   Menziesia pilosa **   Menziesia pilosa **   Menziesia pilosa **   -all-   7.5 % 5       -none- 4 Abies fraseri Abies fraseri **   Abies fraseri **   Abies fraseri **   Abies fraseri **   Abies fraseri **   Abies fraseri **   Abies fraseri **   Abies fraseri **   -all-   3.5 % 4       -none- 5 Vaccinium erythrocarpum Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   Vaccinium erythrocarpum **   -all-   1.5 % 3       -none- 6 Rubus canadensis Rubus canadensis **   Rubus canadensis **   Rubus canadensis **   Rubus canadensis **   Rubus canadensis **   Rubus canadensis **   Rubus canadensis **   Rubus canadensis **   -all-   1.5 % 3       -none- 7 Oclemena acuminata Oclemena acuminata **   Oclemena acuminata **   Oclemena acuminata **   Oclemena acuminata **   Oclemena acuminata **   Oclemena acuminata **   Oclemena acuminata **   Oclemena acuminata **   -all-   1.5 % 3       -none- 8 Prunus pensylvanica Prunus pensylvanica **   Prunus pensylvanica **   Prunus pensylvanica **   Prunus pensylvanica **   Prunus pensylvanica **   Prunus pensylvanica **   Prunus pensylvanica **   Prunus pensylvanica **   -all-   1.5 % 3       -none- 9 Hydatica petiolaris Hydatica petiolaris **   Hydatica petiolaris **   Hydatica petiolaris **   Hydatica petiolaris **   Hydatica petiolaris **   Hydatica petiolaris **   Hydatica petiolaris **   Hydatica petiolaris **   -all-   0.505 % 2       -none- 10 Rumex acetosella Rumex acetosella **   Rumex acetosella **   Rumex acetosella **   Rumex acetosella **   Rumex acetosella **   Rumex acetosella **   Rumex acetosella **   Rumex acetosella **   -all-   0.505 % 2       -none- 11 Carex flexuosa Carex flexuosa **   Carex flexuosa **   Carex flexuosa **   Carex flexuosa **   Carex flexuosa **   Carex flexuosa **   Carex flexuosa **   Carex flexuosa **   -all-   0.505 % 2       -none- 12 Carex brunnescens ssp. sphaerostachya Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   Carex brunnescens ssp. sphaerostachya **   -all-   0.505 % 2       -none- 13 Vaccinium simulatum Vaccinium simulatum **   Vaccinium simulatum **   Vaccinium simulatum **   Vaccinium simulatum **   Vaccinium simulatum **   Vaccinium simulatum **   Vaccinium simulatum **   Vaccinium simulatum **   -all-   0.505 % 2       -none- 14 Athyrium asplenioides Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   Athyrium asplenioides **   -all-   0.505 % 2       -none- 15 Dryopteris campyloptera Dryopteris campyloptera **   Dryopteris campyloptera **   Dryopteris campyloptera **   Dryopteris campyloptera **   Dryopteris campyloptera **   Dryopteris campyloptera **   Dryopteris campyloptera **   Dryopteris campyloptera **   -all-   0.505 % 2       -none- 16 Fallopia cilinodis Fallopia cilinodis **   Fallopia cilinodis **   Fallopia cilinodis **   Fallopia cilinodis **   Fallopia cilinodis **   Fallopia cilinodis **   Fallopia cilinodis **   Fallopia cilinodis **   -all-   0.505 % 2       -none-
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Stratum Definitions:
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