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085-GFNP-0032
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:13668-{5643488C-758B-41B0-843C-FA24B774CBDD}
» Citing info
Plot ID Fields: 
Author Plot Code ? 085-GFNP-0032
Author Observation Code ? 085-GFNP-0032
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 ? 8 x 12.5 m
Area ? 100
Permanence ? not permanent
Environment Fields: 
Elevation ? 22 m
Slope Aspect ? 30 º
Slope Gradient ? 35 º
Topographic Position ? lower slope
Landform ? bedrock outcrop
Hydrologic Regime ? terrestrial (upland)
Soil Moisture Regime ? xeric
Soil Drainage ? rapidly drained
Methods Fields: 
Observation Start Date ? 16-Sep-2003
Observation End Date ? 16-Sep-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 ? 100
Plot Quality Fields: 
Plot Validation Level ? (2) classification plot: sufficient for inclusion in a classification revision
Overall Plot Vegetation Fields: 
Shrub Height ? 2 m
Field Height ? 8 m
Shrub Cover ? 8 %
Field Cover ? 9 %
Nonvascular Cover ? 90 %
Misc Fields: 
Observation Narrative ? Plot captures a rather sparsely vegetated, periodically flood-scoured rock outcrop along, and about 3-4 meters in elevation above, the Potomac River. Dominant non-vascular plants are Grimmia laevigata and Xanthoparmelia cf. conspersa. Flooding probably occurs at the low end of a 1 to 7-year return interval. Most of the outcrop surfaces are steeply sloping and microtopography is very irregular.
Taxa occurring on this plot-observation
Change plant label:
Change Strata Shown:
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 Ionactis linariifolia Ionactis linariifolia **   Ionactis linariifolia **   Ionactis linariifolia **   Ionactis linariifolia **   Ionactis linariifolia **   Ionactis linariifolia **   Ionactis linariifolia **   Ionactis linariifolia **   -all-  
3.5 %
4       -none-
2 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-  
1.5 %
3       -none-
3 Fraxinus americana Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   Fraxinus americana **   -all-  
1.5 %
3      
DBH ?DBH err ?Ht. ?Ht. Err ?# ?
7.5 cm ± 2.5 cm     1 stem(s)
stem
4 Schizachyrium scoparium var. scoparium Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   Schizachyrium scoparium var. scoparium **   -all-  
1.5 %
3       -none-
5 Solidago racemosa Solidago racemosa **   Solidago racemosa **   Solidago racemosa **   Solidago racemosa **   Solidago racemosa **   Solidago racemosa **   Solidago racemosa **   Solidago racemosa **   -all-  
1.5 %
3       -none-
6 Hypericum prolificum Hypericum prolificum **   Hypericum prolificum **   Hypericum prolificum **   Hypericum prolificum **   Hypericum prolificum **   Hypericum prolificum **   Hypericum prolificum **   Hypericum prolificum **   -all-  
1.5 %
3       -none-
7 Acer rubrum Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   Acer rubrum **   -all-  
1.5 %
3       -none-
8 Andropogon gerardii Andropogon gerardii **   Andropogon gerardii **   Andropogon gerardii **   Andropogon gerardii **   Andropogon gerardii **   Andropogon gerardii **   Andropogon gerardii **   Andropogon gerardii **   -all-  
1.5 %
3       -none-
9 Phlox subulata Phlox subulata **   Phlox subulata **   Phlox subulata **   Phlox subulata **   Phlox subulata **   Phlox subulata **   Phlox subulata **   Phlox subulata **   -all-  
1.5 %
3       -none-
10 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-  
1.5 %
3       -none-
11 Quercus montana Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   Quercus montana **   -all-  
0.505 %
2       -none-
12 Rhododendron arborescens Rhododendron arborescens **   Rhododendron arborescens **   Rhododendron arborescens **   Rhododendron arborescens **   Rhododendron arborescens **   Rhododendron arborescens **   Rhododendron arborescens **   Rhododendron arborescens **   -all-  
0.505 %
2       -none-
13 Desmodium perplexum Desmodium perplexum **   Desmodium perplexum **   Desmodium perplexum **   Desmodium perplexum **   Desmodium perplexum **   Desmodium perplexum **   Desmodium perplexum **   Desmodium perplexum **   -all-  
0.505 %
2       -none-
14 Taraxacum officinale Taraxacum officinale **   Taraxacum officinale **   Taraxacum officinale **   Taraxacum officinale **   Taraxacum officinale **   Taraxacum officinale **   Taraxacum officinale **   Taraxacum officinale **   -all-  
0.505 %
2       -none-
15 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-  
0.505 %
2       -none-
16 Allium cernuum Allium cernuum **   Allium cernuum **   Allium cernuum **   Allium cernuum **   Allium cernuum **   Allium cernuum **   Allium cernuum **   Allium cernuum **   -all-  
0.505 %
2       -none-
17 Arabidopsis lyrata ssp. lyrata Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   Arabidopsis lyrata ssp. lyrata **   -all-  
0.505 %
2       -none-
18 Veronicastrum virginicum Veronicastrum virginicum **   Veronicastrum virginicum **   Veronicastrum virginicum **   Veronicastrum virginicum **   Veronicastrum virginicum **   Veronicastrum virginicum **   Veronicastrum virginicum **   Veronicastrum virginicum **   -all-  
0.505 %
2       -none-
19 Amelanchier spicata Amelanchier spicata **   Amelanchier spicata **   Amelanchier spicata **   Amelanchier spicata **   Amelanchier spicata **   Amelanchier spicata **   Amelanchier spicata **   Amelanchier spicata **   -all-  
0.505 %
2       -none-
20 Vaccinium pallidum Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   Vaccinium pallidum **   -all-  
0.505 %
2       -none-
21 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-  
0.505 %
2       -none-
22 Micranthes virginiensis Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   Micranthes virginiensis **   -all-  
0.505 %
2       -none-
23 Panicum dichotomiflorum var. dichotomiflorum Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   Panicum dichotomiflorum var. dichotomiflorum **   -all-  
0.505 %
2       -none-
24 Aquilegia canadensis Aquilegia canadensis **   Aquilegia canadensis **   Aquilegia canadensis **   Aquilegia canadensis **   Aquilegia canadensis **   Aquilegia canadensis **   Aquilegia canadensis **   Aquilegia canadensis **   -all-  
0.505 %
2       -none-
25 Polypodium virginianum Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   Polypodium virginianum **   -all-  
0.505 %
2       -none-
26 Asplenium platyneuron Asplenium platyneuron **   Asplenium platyneuron **   Asplenium platyneuron **   Asplenium platyneuron **   Asplenium platyneuron **   Asplenium platyneuron **   Asplenium platyneuron **   Asplenium platyneuron **   -all-  
0.505 %
2       -none-
27 Betula lenta var. lenta Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   Betula lenta var. lenta **   -all-  
0.505 %
2       -none-
28 Dichanthelium acuminatum var. acuminatum Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   Dichanthelium acuminatum var. acuminatum **   -all-  
0.505 %
2       -none-
29 Eupatorium serotinum Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   Eupatorium serotinum **   -all-  
0.05 %
1       -none-
30 Eclipta prostrata Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   Eclipta prostrata **   -all-  
0.05 %
1       -none-
31 Artemisia annua Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   Artemisia annua **   -all-  
0.05 %
1       -none-
32 Juncus tenuis Juncus tenuis **   Juncus tenuis **   Juncus tenuis **   Juncus tenuis **   Juncus tenuis **   Juncus tenuis **   Juncus tenuis **   Juncus tenuis **   -all-  
0.05 %
1       -none-
33 Ailanthus altissima Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   Ailanthus altissima **   -all-  
0.05 %
1       -none-
34 Viola sororia Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   Viola sororia **   -all-  
0.05 %
1       -none-
35 Echinochloa muricata Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   Echinochloa muricata **   -all-  
0.05 %
1       -none-
This table is SORTABLE. Click the headers to sort ascending and descending.

Stratum Definitions:
Sorry, no Stratum Definitions found.
This table is SORTABLE. Click the headers to sort ascending and descending.
Observation Contributors:
Party ?Role ?
Fleming, Chris Field assistant
Adamson, Nancy Field assistant
Townsend, Johnny Field assistant
Fleming, Gary Author
Community Classification:
More Classification Start Date ? Community AssignmentsContributors
Details 01-Oct-2004
No Community Interpretations.
No Class Contributors.
Details 01-Apr-2007
Community Concept ?Class Fit ?Class Confidence ?Community Authority Reference ?Typal ?
(Hypericum prolificum, Eubotrys racemosa) / Schizachyrium scoparium - Solidago simplex var. racemosa - Ionactis linariifolius Riverscour Sparse Vegetation 4 High   no
No Class Contributors.


Soil Observations:
Soil Horizon ?Soil Depth Top ?Soil Depth Bottom ?Soil Color ?Soil Organic ?Soil Texture ?Soil Sand ?Soil Silt ?Soil Clay ?Soil Coarse ?Soil PH ?Exchange Capacity ?Base Saturation ?Soil Description ?
unknown                         No mineral soil present; sample could not be collected.


Disturbance Data:
Disturbance Type ?Disturbance Intensity ?Disturbance Comment ?
unknown   Scoured frequently, probably every 1 to 7 years.


User Defined Values
No User Defined Data for this plot