085-FAIR-0047
» Citation URL: http://vegbank.org/cite/urn:lsid:cvs.bio.unc.edu:observation:16922-{CCBF1CC7-C373-47FA-A3ED-B3F0084A767D} » Citing info
Plot ID Fields:
Author Plot Code	085-FAIR-0047
Author Observation Code	085-FAIR-0047
Location Fields:	MAP: Google | Yahoo | TopoZone | MapQuest
Location Accuracy	10 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	20 x 20 m
Area	400 m²
Permanence	not permanent
Environment Fields:
Elevation	44 m
Slope Aspect	(n/a, flat) º
Slope Gradient	0 º
Topographic Position	plain/level/bottom
Landform	alluvial flat/alluvial terrace/floodplain
Hydrologic Regime	non-tidal - temporarily flooded
Soil Moisture Regime	subhygric
Soil Drainage	somewhat poorly drained
Methods Fields:
Observation Start Date	13-May-2011
Observation End Date	13-May-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	31 m
Shrub Height	6 m
Field Height	1 m
Tree Cover	90 %
Shrub Cover	8 %
Field Cover	85 %
Nonvascular Cover	0 %
Misc Fields:
Observation Narrative	This extraordinarily beautiful alluvial forest occurs on a medium-sized floodplain along Little Rocky Run. It has an overstory of well-formed Platanus occidentalis, Fraxinus pennsylvanica, and Ulmus americana; a strong sub-canopy of Acer negundo; and a dense herb layer consisting almost entirely of native graminoids and forbs. The very low, almost negligible cover of exotics in this suburban stream valley is remarkable. The very open shrub layer is also hard to explain but may be an artifact of grazing over a prolonged period. The site is a Fairfax County stream valley park.

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 Ulmus americana Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   Ulmus americana **   -all-   62.5 % 8       DBH DBH err Ht. Ht. Err # 17.5 cm ± 2.5 cm     3 stem(s) 32.5 cm ± 2.5 cm     1 stem(s) 44.5 cm ± 0.5 cm     1 stem(s) 48.5 cm ± 0.5 cm     1 stem(s) 2 Acer negundo var. negundo Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   Acer negundo var. negundo **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 7.5 cm ± 2.5 cm     4 stem(s) 12.5 cm ± 2.5 cm     3 stem(s) 17.5 cm ± 2.5 cm     2 stem(s) 22.5 cm ± 2.5 cm     1 stem(s) 27.5 cm ± 2.5 cm     1 stem(s) 3 Carex amphibola Carex amphibola **   Carex amphibola **   Carex amphibola **   Carex amphibola **   Carex amphibola **   Carex amphibola **   Carex amphibola **   Carex amphibola **   -all-   37.5 % 7       -none- 4 Platanus occidentalis Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   Platanus occidentalis **   -all-   37.5 % 7       DBH DBH err Ht. Ht. Err # 52.5 cm ± 0.5 cm     1 stem(s) 61.5 cm ± 0.5 cm     1 stem(s) 5 Viola affinis Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   Viola affinis **   -all-   17.5 % 6       -none- 6 Carex radiata Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   Carex radiata **   -all-   17.5 % 6       -none- 7 Toxicodendron radicans Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   Toxicodendron radicans **   -all-   17.5 % 6       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     3 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 8 Carex tribuloides Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   Carex tribuloides **   -all-   7.5 % 5       -none- 9 Vitis vulpina Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   Vitis vulpina **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     1 stem(s) 7.5 cm ± 2.5 cm     1 stem(s) 10 Fraxinus pennsylvanica Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   Fraxinus pennsylvanica **   -all-   7.5 % 5       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s) 55.5 cm ± 0.5 cm     1 stem(s) 11 Elymus virginicus var. virginicus Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   Elymus virginicus var. virginicus **   -all-   7.5 % 5       -none- 12 Cinna arundinacea Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   Cinna arundinacea **   -all-   3.5 % 4       -none- 13 Asimina triloba Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   Asimina triloba **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 3.75 cm ± 1.25 cm     5 stem(s) 14 Carya cordiformis Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   Carya cordiformis **   -all-   3.5 % 4       DBH DBH err Ht. Ht. Err # 12.5 cm ± 2.5 cm     1 stem(s) 15 Arisaema triphyllum Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   Arisaema triphyllum **   -all-   1.5 % 3       -none- 16 Carex blanda Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   Carex blanda **   -all-   1.5 % 3       -none- 17 Carex grayi Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   Carex grayi **   -all-   1.5 % 3       -none- 18 Arisaema dracontium Arisaema dracontium **   Arisaema dracontium **   Arisaema dracontium **   Arisaema dracontium **   Arisaema dracontium **   Arisaema dracontium **   Arisaema dracontium **   Arisaema dracontium **   -all-   1.5 % 3       -none- 19 Boehmeria cylindrica Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   Boehmeria cylindrica **   -all-   1.5 % 3       -none- 20 Dichanthelium clandestinum Dichanthelium clandestinum **   Dichanthelium clandestinum **   Dichanthelium clandestinum **   Dichanthelium clandestinum **   Dichanthelium clandestinum **   Dichanthelium clandestinum **   Dichanthelium clandestinum **   Dichanthelium clandestinum **   -all-   0.505 % 2       -none- 21 Geum canadense Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   Geum canadense **   -all-   0.505 % 2       -none- 22 Sanicula odorata Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   Sanicula odorata **   -all-   0.505 % 2       -none- 23 Myosotis macrosperma Myosotis macrosperma **   Myosotis macrosperma **   Myosotis macrosperma **   Myosotis macrosperma **   Myosotis macrosperma **   Myosotis macrosperma **   Myosotis macrosperma **   Myosotis macrosperma **   -all-   0.505 % 2       -none- 24 Claytonia virginica Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   Claytonia virginica **   -all-   0.505 % 2       -none- 25 Carex careyana Carex careyana **   Carex careyana **   Carex careyana **   Carex careyana **   Carex careyana **   Carex careyana **   Carex careyana **   Carex careyana **   -all-   0.505 % 2       -none- 26 Lonicera japonica Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   Lonicera japonica **   -all-   0.505 % 2       -none- 27 Smilax rotundifolia Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   Smilax rotundifolia **   -all-   0.505 % 2       -none- 28 Symphyotrichum lateriflorum Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   Symphyotrichum lateriflorum **   -all-   0.505 % 2       -none- 29 Carex squarrosa Carex squarrosa **   Carex squarrosa **   Carex squarrosa **   Carex squarrosa **   Carex squarrosa **   Carex squarrosa **   Carex squarrosa **   Carex squarrosa **   -all-   0.505 % 2       -none- 30 Viola pubescens Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   Viola pubescens **   -all-   0.505 % 2       -none- 31 Persicaria sagittata Persicaria sagittata **   Persicaria sagittata **   Persicaria sagittata **   Persicaria sagittata **   Persicaria sagittata **   Persicaria sagittata **   Persicaria sagittata **   Persicaria sagittata **   -all-   0.505 % 2       -none- 32 Persicaria virginiana Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   Persicaria virginiana **   -all-   0.505 % 2       -none- 33 Chelone glabra Chelone glabra **   Chelone glabra **   Chelone glabra **   Chelone glabra **   Chelone glabra **   Chelone glabra **   Chelone glabra **   Chelone glabra **   -all-   0.505 % 2       -none- 34 Microstegium vimineum Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   Microstegium vimineum **   -all-   0.505 % 2       -none- 35 Oxalis stricta Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   Oxalis stricta **   -all-   0.505 % 2       -none- 36 Poa trivialis Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   Poa trivialis **   -all-   0.505 % 2       -none- 37 Galium triflorum Galium triflorum **   Galium triflorum **   Galium triflorum **   Galium triflorum **   Galium triflorum **   Galium triflorum **   Galium triflorum **   Galium triflorum **   -all-   0.505 % 2       -none- 38 Hydrophyllum virginianum Hydrophyllum virginianum **   Hydrophyllum virginianum **   Hydrophyllum virginianum **   Hydrophyllum virginianum **   Hydrophyllum virginianum **   Hydrophyllum virginianum **   Hydrophyllum virginianum **   Hydrophyllum virginianum **   -all-   0.505 % 2       -none- 39 Verbesina alternifolia Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   Verbesina alternifolia **   -all-   0.505 % 2       -none- 40 Impatiens capensis Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   Impatiens capensis **   -all-   0.505 % 2       -none- 41 Allium canadense var. canadense Allium canadense var. canadense **   Allium canadense var. canadense **   Allium canadense var. canadense **   Allium canadense var. canadense **   Allium canadense var. canadense **   Allium canadense var. canadense **   Allium canadense var. canadense **   Allium canadense var. canadense **   -all-   0.505 % 2       -none- 42 Carex lurida Carex lurida **   Carex lurida **   Carex lurida **   Carex lurida **   Carex lurida **   Carex lurida **   Carex lurida **   Carex lurida **   -all-   0.505 % 2       -none- 43 Liriodendron tulipifera Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   Liriodendron tulipifera **   -all-   0.505 % 2       -none- 44 Campsis radicans Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   Campsis radicans **   -all-   0.505 % 2       -none- 45 Carex gracillima Carex gracillima **   Carex gracillima **   Carex gracillima **   Carex gracillima **   Carex gracillima **   Carex gracillima **   Carex gracillima **   Carex gracillima **   -all-   0.505 % 2       -none- 46 Carpinus caroliniana Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   Carpinus caroliniana **   -all-   0.505 % 2       -none- 47 Carex stipata var. stipata Carex stipata var. stipata **   Carex stipata var. stipata **   Carex stipata var. stipata **   Carex stipata var. stipata **   Carex stipata var. stipata **   Carex stipata var. stipata **   Carex stipata var. stipata **   Carex stipata var. stipata **   -all-   0.505 % 2       -none- 48 Dioscorea villosa Dioscorea villosa **   Dioscorea villosa **   Dioscorea villosa **   Dioscorea villosa **   Dioscorea villosa **   Dioscorea villosa **   Dioscorea villosa **   Dioscorea villosa **   -all-   0.05 % 1       -none- 49 Rumex altissimus Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   Rumex altissimus **   -all-   0.05 % 1       -none- 50 Ranunculus abortivus Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   Ranunculus abortivus **   -all-   0.05 % 1       -none-
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