085-FAIR-0007
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:13367-{8A770FF5-7F0E-4A36-ACA7-0FEF128DF843} » Citing info
Plot ID Fields:
Author Plot Code	085-FAIR-0007
Author Observation Code	085-FAIR-0007
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	96 m
Slope Aspect	(n/a, flat) º
Slope Gradient	2 º
Topographic Position	crest/interfluve
Landform	rolling/dissected upland
Hydrologic Regime	terrestrial (upland)
Soil Moisture Regime	somewhat xeric
Soil Drainage	somewhat poorly drained
Methods Fields:
Observation Start Date	13-Jun-2003
Observation End Date	13-Jun-2003
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	28 m
Shrub Height	6 m
Field Height	7 m
Tree Cover	90 %
Shrub Cover	60 %
Field Cover	70 %
Nonvascular Cover	2 %
Misc Fields:
Observation Narrative	Diabase Soils probably shallow to bedrock. High/xeric extreme of forest on this site. Site is part of an extensive, rocky diabase "flatwoods" supporting a relatively old stand of dry, species-rich oak-hickory forest. Soils in this area have a distinct fragipan of montmorillonite clay and alternate between being rock-hard during dry periods and waterlogged during wet periods. This plot is located in one of the highest and most xeric habitats, on the flat summit of a distinct "knob." Soils are probably shallow to bedrock, and are rich in calcium, magnesium, and manganese. Unlike other parts of the stand, the forest here is dominated by small-diameter Fraxinus americana, with oaks and hickories secondary in importance. Cercis canadensis is a common shrub and the herb layer consists largely of graminoids, particularly Muhlenbergia sobolifera and Dichanthelium boscii. Stand structure and composition suggest that this knob was cleared more recently than other parts of the stand.

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 Fraxinus americana Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   -all-   87.5 % 9       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     4 stem(s) 12.5 cm ± 2.5 cm     7 stem(s) 17.5 cm ± 2.5 cm     3 stem(s) 22.5 cm ± 2.5 cm     3 stem(s) 32.5 cm ± 2.5 cm     4 stem(s) 2 Cercis canadensis var. canadensis Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   Cercis canadensis var. canadensis **   -all-   62.5 % 8       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     17 stem(s) 7.5 cm ± 2.5 cm     3 stem(s) 3 Carya tomentosa Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   Carya tomentosa **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     1 stem(s) 12.5 cm ± 2.5 cm     3 stem(s) 17.5 cm ± 2.5 cm     1 stem(s) 4 Juniperus virginiana var. virginiana Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   Juniperus virginiana var. virginiana **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 12.5 cm ± 2.5 cm     2 stem(s) 32.5 cm ± 2.5 cm     1 stem(s) 37.5 cm ± 2.5 cm     1 stem(s) 5 Dichanthelium boscii Dichanthelium boscii **   Dichanthelium boscii **   Dichanthelium boscii **   Dichanthelium boscii **   Dichanthelium boscii **   Dichanthelium boscii **   Dichanthelium boscii **   Dichanthelium boscii **   -all-   17.5 % 6       -none- 6 Muhlenbergia sobolifera Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   Muhlenbergia sobolifera **   -all-   17.5 % 6       -none- 7 Quercus rubra Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   Quercus rubra **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 48.5 cm ± 0.5 cm     1 stem(s) 8 Oxalis violacea Oxalis violacea **   Oxalis violacea **   Oxalis violacea **   Oxalis violacea **   Oxalis violacea **   Oxalis violacea **   Oxalis violacea **   Oxalis violacea **   -all-   3.5 % 4       -none- 9 Chionanthus virginicus Chionanthus virginicus **   Chionanthus virginicus **   Chionanthus virginicus **   Chionanthus virginicus **   Chionanthus virginicus **   Chionanthus virginicus **   Chionanthus virginicus **   Chionanthus virginicus **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     2 stem(s) 10 Agrimonia rostellata Agrimonia rostellata **   Agrimonia rostellata **   Agrimonia rostellata **   Agrimonia rostellata **   Agrimonia rostellata **   Agrimonia rostellata **   Agrimonia rostellata **   Agrimonia rostellata **   -all-   1.5 % 3       -none- 11 Danthonia spicata Danthonia spicata **   Danthonia spicata **   Danthonia spicata **   Danthonia spicata **   Danthonia spicata **   Danthonia spicata **   Danthonia spicata **   Danthonia spicata **   -all-   1.5 % 3       -none- 12 Elymus hystrix Elymus hystrix **   Elymus hystrix **   Elymus hystrix **   Elymus hystrix **   Elymus hystrix **   Elymus hystrix **   Elymus hystrix **   Elymus hystrix **   -all-   1.5 % 3       -none- 13 Lonicera japonica Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   -all-   1.5 % 3       -none- 14 Amphicarpaea bracteata Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   Amphicarpaea bracteata **   -all-   1.5 % 3       -none- 15 Viola palmata var. triloba Viola palmata var. triloba **   Viola palmata var. triloba **   Viola palmata var. triloba **   Viola palmata var. triloba **   Viola palmata var. triloba **   Viola palmata var. triloba **   Viola palmata var. triloba **   Viola palmata var. triloba **   -all-   0.505 % 2       -none- 16 Solidago caesia var. caesia Solidago caesia var. caesia **   Solidago caesia var. caesia **   Solidago caesia var. caesia **   Solidago caesia var. caesia **   Solidago caesia var. caesia **   Solidago caesia var. caesia **   Solidago caesia var. caesia **   Solidago caesia var. caesia **   -all-   0.505 % 2       -none- 17 Carex digitalis Carex digitalis **   Carex digitalis **   Carex digitalis **   Carex digitalis **   Carex digitalis **   Carex digitalis **   Carex digitalis **   Carex digitalis **   -all-   0.505 % 2       -none- 18 Rubus flagellaris Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   Rubus flagellaris **   -all-   0.505 % 2       -none- 19 Cornus florida Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   Cornus florida **   -all-   0.505 % 2       -none- 20 Quercus alba Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   Quercus alba **   -all-   0.505 % 2       -none- 21 Geum virginianum Geum virginianum **   Geum virginianum **   Geum virginianum **   Geum virginianum **   Geum virginianum **   Geum virginianum **   Geum virginianum **   Geum virginianum **   -all-   0.505 % 2       -none- 22 Symphyotrichum lateriflorum Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   -all-   0.505 % 2       -none- 23 Nabalus serpentarius Nabalus serpentarius **   Nabalus serpentarius **   Nabalus serpentarius **   Nabalus serpentarius **   Nabalus serpentarius **   Nabalus serpentarius **   Nabalus serpentarius **   Nabalus serpentarius **   -all-   0.505 % 2       -none- 24 Asimina triloba Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   -all-   0.505 % 2       -none- 25 Polygonatum biflorum var. biflorum Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   Polygonatum biflorum var. biflorum **   -all-   0.505 % 2       -none- 26 Rosa carolina Rosa carolina **   Rosa carolina **   Rosa carolina **   Rosa carolina **   Rosa carolina **   Rosa carolina **   Rosa carolina **   Rosa carolina **   -all-   0.505 % 2       -none- 27 Galium circaezans Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   Galium circaezans **   -all-   0.505 % 2       -none- 28 Uvularia perfoliata Uvularia perfoliata **   Uvularia perfoliata **   Uvularia perfoliata **   Uvularia perfoliata **   Uvularia perfoliata **   Uvularia perfoliata **   Uvularia perfoliata **   Uvularia perfoliata **   -all-   0.505 % 2       -none- 29 Paronychia canadensis Paronychia canadensis **   Paronychia canadensis **   Paronychia canadensis **   Paronychia canadensis **   Paronychia canadensis **   Paronychia canadensis **   Paronychia canadensis **   Paronychia canadensis **   -all-   0.505 % 2       -none- 30 Persicaria longiseta Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   Persicaria longiseta **   -all-   0.505 % 2       -none- 31 Fallopia cristata Fallopia cristata **   Fallopia cristata **   Fallopia cristata **   Fallopia cristata **   Fallopia cristata **   Fallopia cristata **   Fallopia cristata **   Fallopia cristata **   -all-   0.505 % 2       -none- 32 Solidago ulmifolia Solidago ulmifolia **   Solidago ulmifolia **   Solidago ulmifolia **   Solidago ulmifolia **   Solidago ulmifolia **   Solidago ulmifolia **   Solidago ulmifolia **   Solidago ulmifolia **   -all-   0.505 % 2       -none- 33 Salvia lyrata Salvia lyrata **   Salvia lyrata **   Salvia lyrata **   Salvia lyrata **   Salvia lyrata **   Salvia lyrata **   Salvia lyrata **   Salvia lyrata **   -all-   0.505 % 2       -none- 34 Liparis liliifolia Liparis liliifolia **   Liparis liliifolia **   Liparis liliifolia **   Liparis liliifolia **   Liparis liliifolia **   Liparis liliifolia **   Liparis liliifolia **   Liparis liliifolia **   -all-   0.505 % 2       -none- 35 Parthenocissus quinquefolia Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   Parthenocissus quinquefolia **   -all-   0.505 % 2       -none- 36 Eupatorium sessilifolium var. sessilifolium Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   Eupatorium sessilifolium var. sessilifolium **   -all-   0.505 % 2       -none- 37 Viola sororia Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   -all-   0.505 % 2       -none- 38 Ulmus rubra Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   Ulmus rubra **   -all-   0.505 % 2       -none- 39 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   0.505 % 2       -none- 40 Sanicula canadensis Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   Sanicula canadensis **   -all-   0.505 % 2       -none- 41 Bromus pubescens Bromus pubescens **   Bromus pubescens **   Bromus pubescens **   Bromus pubescens **   Bromus pubescens **   Bromus pubescens **   Bromus pubescens **   Bromus pubescens **   -all-   0.505 % 2       -none- 42 Thalictrum thalictroides Thalictrum thalictroides **   Thalictrum thalictroides **   Thalictrum thalictroides **   Thalictrum thalictroides **   Thalictrum thalictroides **   Thalictrum thalictroides **   Thalictrum thalictroides **   Thalictrum thalictroides **   -all-   0.505 % 2       -none- 43 Cynoglossum virginianum var. virginianum Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   Cynoglossum virginianum var. virginianum **   -all-   0.505 % 2       -none- 44 Carex pensylvanica Carex pensylvanica **   Carex pensylvanica **   Carex pensylvanica **   Carex pensylvanica **   Carex pensylvanica **   Carex pensylvanica **   Carex pensylvanica **   Carex pensylvanica **   -all-   0.505 % 2       -none- 45 Carex physorhyncha Carex physorhyncha **   Carex physorhyncha **   Carex physorhyncha **   Carex physorhyncha **   Carex physorhyncha **   Carex physorhyncha **   Carex physorhyncha **   Carex physorhyncha **   -all-   0.505 % 2       -none- 46 Carex planispicata Carex planispicata **   Carex planispicata **   Carex planispicata **   Carex planispicata **   Carex planispicata **   Carex planispicata **   Carex planispicata **   Carex planispicata **   -all-   0.505 % 2       -none- 47 Carex willdenowii Carex willdenowii **   Carex willdenowii **   Carex willdenowii **   Carex willdenowii **   Carex willdenowii **   Carex willdenowii **   Carex willdenowii **   Carex willdenowii **   -all-   0.505 % 2       -none- 48 Dichanthelium commutatum Dichanthelium commutatum **   Dichanthelium commutatum **   Dichanthelium commutatum **   Dichanthelium commutatum **   Dichanthelium commutatum **   Dichanthelium commutatum **   Dichanthelium commutatum **   Dichanthelium commutatum **   -all-   0.505 % 2       -none- 49 Viburnum prunifolium Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   Viburnum prunifolium **   -all-   0.505 % 2       -none- 50 Celtis occidentalis Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   Celtis occidentalis **   -all-   0.505 % 2       -none- 51 Carex hirsutella Carex hirsutella **   Carex hirsutella **   Carex hirsutella **   Carex hirsutella **   Carex hirsutella **   Carex hirsutella **   Carex hirsutella **   Carex hirsutella **   -all-   0.505 % 2       -none- 52 Agrimonia pubescens Agrimonia pubescens **   Agrimonia pubescens **   Agrimonia pubescens **   Agrimonia pubescens **   Agrimonia pubescens **   Agrimonia pubescens **   Agrimonia pubescens **   Agrimonia pubescens **   -all-   0.505 % 2       -none- 53 Carex blanda Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   -all-   0.505 % 2       -none- 54 Krigia dandelion Krigia dandelion **   Krigia dandelion **   Krigia dandelion **   Krigia dandelion **   Krigia dandelion **   Krigia dandelion **   Krigia dandelion **   Krigia dandelion **   -all-   0.505 % 2       -none- 55 Acalypha virginica Acalypha virginica **   Acalypha virginica **   Acalypha virginica **   Acalypha virginica **   Acalypha virginica **   Acalypha virginica **   Acalypha virginica **   Acalypha virginica **   -all-   0.505 % 2       -none- 56 Vitis vulpina Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   -all-   0.505 % 2       -none- 57 Carya glabra Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   Carya glabra **   -all-   0.505 % 2       -none- 58 Galium aparine Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   Galium aparine **   -all-   0.05 % 1       -none- 59 Galium pilosum Galium pilosum **   Galium pilosum **   Galium pilosum **   Galium pilosum **   Galium pilosum **   Galium pilosum **   Galium pilosum **   Galium pilosum **   -all-   0.05 % 1       -none- 60 Micranthes virginiensis Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   -all-   0.05 % 1       -none- 61 Oxalis dillenii Oxalis dillenii **   Oxalis dillenii **   Oxalis dillenii **   Oxalis dillenii **   Oxalis dillenii **   Oxalis dillenii **   Oxalis dillenii **   Oxalis dillenii **   -all-   0.05 % 1       -none-
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Stratum Definitions:
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