085-LOUD-0021
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:16977-{90740886-0292-4CA8-AECF-EE97508BAA34} » Citing info
Plot ID Fields:
Author Plot Code	085-LOUD-0021
Author Observation Code	085-LOUD-0021
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: Loudoun region|state|province: Virginia
Layout Fields:
DSG Polygon	10 x 40 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	103 m
Slope Aspect	(n/a, flat) º
Slope Gradient	1 º
Topographic Position	toe slope
Landform	sag pond/basin
Hydrologic Regime	non-tidal - seasonally flooded
Soil Moisture Regime	hygric
Soil Drainage	poorly drained
Methods Fields:
Observation Start Date	28-Jul-2011
Observation End Date	28-Jul-2011
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	36 m
Shrub Height	4 m
Field Height	5 m
Tree Cover	80 %
Shrub Cover	5 %
Field Cover	5 %
Nonvascular Cover	0.5 %
Misc Fields:
Observation Narrative	The plot was sampled in the largest of several sinkhole depression ponds on a 40-acre tract in the northern Piedmont. The sinkholes, which are geomorphologically unique in the Virginia Piedmont, are the result of subsurface solution and weathering of Cambrian limestone that is overlain by acidic alluvium an colluvium washed from the eastern slope of Catoctin Mountain. The geomorphic setting is thus similar to that of the Shenandoah Valley sinkhole ponds in Augusta and Rockingham counties. The long axis of the 10 x 40 m plot was positioned down the center of the elongate-elliptical pond. The entire floor of the pond is devoid of trees and mostly covered by leaf litter. Individual trees of Quercus palustris, Acer rubrum, and Nyssa sylvatica were captured along the margin. Additional Acer rubrum overhangs the plot. Except for a discrete patch of Boehmeria cylindrica, most of the herbaceous flora is confined to pond-margin hummocks. This pond is deeply flooded during the winter and spring, and supports a number of salamander species that are uncommon in this region.

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 # 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     1 stem(s) 37.5 cm ± 2.5 cm     1 stem(s) 41.5 cm ± 0.5 cm     1 stem(s) 47.5 cm ± 0.5 cm     1 stem(s) 2 Quercus palustris Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   Quercus palustris **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 92.5 cm ± 0.5 cm     1 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 # 12.5 cm ± 2.5 cm     1 stem(s) 43.5 cm ± 0.5 cm     1 stem(s) 56.5 cm ± 0.5 cm     1 stem(s) 4 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   3.5 % 4       -none- 5 Leersia virginica Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   Leersia virginica **   -all-   1.5 % 3       -none- 6 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     1 stem(s) 7 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   1.5 % 3       -none- 8 Ilex verticillata Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   Ilex verticillata **   -all-   1.5 % 3       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     3 stem(s) 9 Carex tribuloides Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   -all-   0.505 % 2       -none- 10 Viburnum prunifolium Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   -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 Lycopus virginicus Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   Lycopus virginicus **   -all-   0.505 % 2       -none- 13 Acalypha rhomboidea Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   Acalypha rhomboidea **   -all-   0.505 % 2       -none- 14 Fraxinus pennsylvanica Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   -all-   0.505 % 2       -none- 15 Persicaria longiseta Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   -all-   0.505 % 2       -none- 16 Viola affinis Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   -all-   0.505 % 2       -none- 17 Parthenocissus quinquefolia Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   -all-   0.505 % 2       -none- 18 Carex swanii Carex swanii **   Carex swanii **   Carex swanii **   Carex swanii **   Carex swanii **   Carex swanii **   Carex swanii **   Carex swanii **   -all-   0.505 % 2       -none- 19 Ailanthus altissima Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   -all-   0.505 % 2       -none- 20 Galium circaezans Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   -all-   0.505 % 2       -none- 21 Carex crinita Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   Carex crinita **   -all-   0.505 % 2       -none- 22 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   0.505 % 2       -none- 23 Vitis vulpina Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   -all-   0.505 % 2       -none- 24 Sanicula canadensis Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   -all-   0.05 % 1       -none- 25 Amelanchier arborea Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   Amelanchier arborea **   -all-   0.05 % 1       -none- 26 Lonicera japonica Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   -all-   0.05 % 1       -none- 27 Cephalanthus occidentalis Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   Cephalanthus occidentalis **   -all-   0.05 % 1       -none- 28 Rubus flagellaris Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   -all-   0.05 % 1       -none- 29 Ranunculus abortivus Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   -all-   0.05 % 1       -none- 30 Celtis occidentalis Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   -all-   0.05 % 1       -none-
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Stratum Definitions:
Sorry, no Stratum Definitions found.
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