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Ecosystems
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View on NatureServe Explorer
Ecosystem TypeUpper Level Code
Classification Code
Common Name
Scientific Name
NatureServe Global Rank
NatureServe Rounded Global Rank
DistributionBiome Code
Subbiome Code
Formation Code
Division Code
Macrogroup Code
GROUP Code
ALLIANCE Code
Next Level Up
3
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.836005/Schizachyrium_scoparium_-_Packera_paupercula_-_Packera_plattensis_Appalachian_Mafic_Glade_Group
GroupTT4.b1G180Appalachian Mafic Barrens
Schizachyrium scoparium - Packera paupercula - Packera plattensis Appalachian Mafic Glade Group
G1G3G2
United States (NNR): GA (SNR), MD (SNR), NC (SNR), NY (SNR), PA (SNR), TN (SNR), VA (SNR), WV (SNR)
TT4TT4.bTT4.b1TT4.b1.NbM506G180Appalachian Rocky Felsic & Mafic Scrub & Grassland Macrogroup
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.1159199/Quercus_rubra_-_Acer_saccharum_(Carya_ovata)_-_Ostrya_virginiana_Circumneutral_Allegheny_Mountains_Forest
AssociationTT2.b1CEGL008578Allegheny Mountains Circumneutral Red Oak - Sugar Maple Forest
Quercus rubra - Acer saccharum (Carya ovata) / Ostrya virginiana Circumneutral Allegheny Mountains Forest
G2?G2
United States (NNR): PA (SNR), WV (S2)
TT2TT2.bTT2.b1TT2.b1.NaM883G742A3303Quercus rubra - Acer saccharum - Liriodendron tulipifera Forest Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.787687/Acer_rubrum_-_Pinus_virginiana_-_Pinus_rigida_-_Smilax_spp_Serpentine_Forest
AssociationTT2.b1CEGL006439Red Maple - Pine Serpentine Forest
Acer rubrum - Pinus virginiana - Pinus rigida / Smilax spp. Serpentine Forest
G1G2G1
United States (NNR): MD (S1), PA (S1)
TT2TT2.bTT2.b1TT2.b1.NaM502G906A3311Pinus rigida - Pinus virginiana - Quercus marilandica Serpentine Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.787680/Acer_rubrum_-_Quercus_spp_-_Smilax_spp_Serpentine_Forest
AssociationTT2.b1CEGL006438Red Maple - Oak / Greenbrier Serpentine Forest
Acer rubrum - Quercus spp. / Smilax spp. Serpentine Forest
G1G2G1
United States (NNR): PA (SNR)
TT2TT2.bTT2.b1TT2.b1.NaM502G906A3311Pinus rigida - Pinus virginiana - Quercus marilandica Serpentine Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.787691/Juniperus_virginiana_-_Pinus_virginiana_-_Smilax_rotundifolia_Serpentine_Forest
AssociationTT2.b1CEGL006440Red-cedar - Virginia Pine / Greenbrier Serpentine Forest
Juniperus virginiana - Pinus virginiana / Smilax rotundifolia Serpentine Forest
G1G2G1
United States (NNR): MD (S1), PA (S2)
TT2TT2.bTT2.b1TT2.b1.NaM502G906A3311Pinus rigida - Pinus virginiana - Quercus marilandica Serpentine Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.905858/Pinus_rigida_-_Sporobolus_heterolepis_-_Schizachyrium_scoparium_Serpentine_Woodland
AssociationTT2.b1CEGL006496Pitch Pine Serpentine Woodland
Pinus rigida / Sporobolus heterolepis - Schizachyrium scoparium Serpentine Woodland
G1G3G2
United States (NNR): PA (S1)
TT2TT2.bTT2.b1TT2.b1.NaM502G906A3311Pinus rigida - Pinus virginiana - Quercus marilandica Serpentine Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.688955/Pinus_rigida_-_Quercus_ilicifolia_-_Rhododendron_canadense_Woodland
AssociationTT2.b1CEGL006157Mesic Till Plain Barrens
Pinus rigida - Quercus ilicifolia - Rhododendron canadense Woodland
G1G1
United States (NNR): PA (S1)
TT2TT2.bTT2.b1TT2.b1.NaM502G906A4372Pinus rigida Rocky Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.1159189/Bouteloua_curtipendula_-_Schizachyrium_scoparium_-_Asclepias_verticillata_Limestone_Grassland
AssociationTT2.b1CEGL008376Ridge & Valley Xeric Limestone Prairie
Bouteloua curtipendula - Schizachyrium scoparium - Asclepias verticillata Limestone Grassland
G1G2G1
United States (NNR): PA (SNR), WV (S1)
TT2TT2.bTT2.b1TT2.b1.NaM502G016A3106Quercus muehlenbergii Appalachian Limestone Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.787677/Deschampsia_cespitosa_-_Vernonia_noveboracensis_Serpentine_Seep
AssociationTT4.b1CEGL006316Tufted Hairgrass Serpentine Seep
Deschampsia cespitosa - Vernonia noveboracensis Serpentine Seep
G1G1
United States (NNR): PA (S1)
TT4TT4.bTT4.b1TT4.b1.NbM506G180A3471Deschampsia cespitosa Serpentine Seep Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.683963/Juniperus_virginiana_-_Fraxinus_americana_-_Carex_pensylvanica_-_Cheilanthes_lanosa_Open_Woodland
AssociationTT4.b1CEGL006037Central Appalachian Circumneutral Barrens
Juniperus virginiana - Fraxinus americana / Carex pensylvanica - Cheilanthes lanosa Open Woodland
G2G2
United States (NNR): MD (S1), PA (S1), VA (SNR), WV (S1)
TT4TT4.bTT4.b1TT4.b1.NbM506G180A2074Fraxinus americana - Quercus stellata / Carex pensylvanica Appalachian Mafic-Circumneutral Scrub Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.787699/Schizachyrium_scoparium_-_Sporobolus_heterolepis_Serpentine_Grassland
AssociationTT4.b1CEGL006442Little Bluestem - Prairie Dropseed Serpentine Barrens
Schizachyrium scoparium - Sporobolus heterolepis Serpentine Grassland
G1G2G1
United States (NNR): MD (S2), PA (S1)
TT4TT4.bTT4.b1TT4.b1.NbM506G180A3468Schizachyrium scoparium - Sorghastrum nutans - Symphyotrichum depauperatum Serpentine Grassland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.787695/Sorghastrum_nutans_-_Schizachyrium_scoparium_Serpentine_Grassland
AssociationTT4.b1CEGL006441Indiangrass - Little Bluestem Serpentine Barrens
Sorghastrum nutans - Schizachyrium scoparium Serpentine Grassland
G1G2G1
United States (NNR): NY (SNR), PA (S1)
TT4TT4.bTT4.b1TT4.b1.NbM506G180A3468Schizachyrium scoparium - Sorghastrum nutans - Symphyotrichum depauperatum Serpentine Grassland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.868660/Pinus_rigida_-_Osmunda_cinnamomea_-_Carex_stricta_-_Eriophorum_virginicum_-_Sphagnum_spp_Swamp_Woodland
AssociationTP1.a2CEGL007056Ridge & Valley Pitch Pine Peat Woodland
Pinus rigida / Osmunda cinnamomea - Carex stricta - Eriophorum virginicum / Sphagnum spp. Swamp Woodland
G1G1
United States (NNR): PA (S2), VA (S1), WV (S1)
TP1TP1.aTP1.a2TP1.a2.NaM032G039A0580Pinus rigida Swamp Woodland Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.791578/Carya_cordiformis_-_Prunus_serotina_-_Ageratina_altissima_Forest
AssociationTP1.a2CEGL006445Mid-Atlantic Terrace Floodplain Forest
Carya cordiformis - Prunus serotina / Ageratina altissima Forest
G2G3G2
United States (NNR): NJ (SNR), NY (SNR), PA (S3), WV (S1)
TP1TP1.aTP1.a2TP1.a2.NbM029G673A3701
Platanus occidentalis - Fraxinus pennsylvanica - Liriodendron tulipifera Central Appalachian-Piedmont Floodplain Forest Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.689039/Acer_rubrum_-_Nyssa_sylvatica_High_Allegheny_Plateau-Central_Appalachian_Seep_Forest
AssociationTP1.a2CEGL006132Central Appalachian Acidic Seep Forest
Acer rubrum - Nyssa sylvatica High Allegheny Plateau-Central Appalachian Seep Forest
G2G2
United States (NNR): MD (S2), PA (S3), VA (S1), WV (S2)
TP1TP1.aTP1.a2TP1.a2.NbM503G902A4460Acer rubrum - Nyssa sylvatica Acidic Swamp Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.685788/Fraxinus_nigra_-_Abies_balsamea_-_Rhamnus_alnifolia_Swamp
AssociationTP1.a2CEGL006003Central Appalachian Circumneutral Seepage Swamp
Fraxinus nigra - Abies balsamea / Rhamnus alnifolia Swamp
G1G1
United States (NNR): PA (S1), WV (S1)
TP1TP1.aTP1.a2TP1.a2.NbM503G918A4461Acer rubrum - Fraxinus pennsylvanica Northeast Alkaline Swamp Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.685562/Picea_rubens_-_(Tsuga_canadensis)_-_Rhododendron_maximum_Swamp
AssociationTP1.a2CEGL006277Swamp (Red Spruce Type)
Picea rubens - (Tsuga canadensis) / Rhododendron maximum Swamp
G2?G2
United States (NNR): MD (S1), NC (SNR), NY (SNR), PA (S1), TN (SNR), VA (S1), WV (S2)
TP1TP1.aTP1.a2TP1.a2.NbM504G045A3417Picea rubens Central Appalachian Swamp Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.800184/Picea_rubens_-_Rhododendron_maximum_-_Kalmia_latifolia_-_Eriophorum_virginicum_-_Sphagnum_spp_Swamp
AssociationTP1.a2CEGL006588Red Spruce / Heath / Peatmoss Swamp
Picea rubens / Rhododendron maximum - Kalmia latifolia / Eriophorum virginicum / Sphagnum spp. Swamp
G2G3G2
United States (NNR): PA (S2), WV (S2)
TP1TP1.aTP1.a2TP1.a2.NbM504G045A3417Picea rubens Central Appalachian Swamp Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.683977/Orontium_aquaticum_-_Schoenoplectus_subterminalis_-_Eriocaulon_aquaticum_Marsh
AssociationTP1.b1CEGL007859Goldenclub Pond
Orontium aquaticum - Schoenoplectus subterminalis - Eriocaulon aquaticum Marsh
G1G1
United States (NNR): DE (S1), PA (S2), VA (S1)
TP1TP1.bTP1.b1TP1.b1.NcM069G125A4065Orontium aquaticum - Schoenoplectus subterminalis Marsh Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.836282/(Cephalanthus_occidentalis)_-_Dulichium_arundinaceum_-_(Polygonum_hydropiperoides_Glyceria_acutiflora_Proserpinaca_palustris)_Marsh
AssociationTP1.b1CEGL003746
Central Appalachian Montane Depression Pond (Threeway Sedge - Buttonbush Type)
(Cephalanthus occidentalis) / Dulichium arundinaceum - (Polygonum hydropiperoides, Glyceria acutiflora, Proserpinaca palustris) Marsh
G1G1
United States (NNR): PA (SNR), VA (S1), WV (S1)
TP1TP1.bTP1.b1TP1.b1.NcM069G903A4680Dulichium arundinaceum - Polygonum hydropiperoides - Carex spp. Sinkhole Marsh Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.791581/Vernonia_noveboracensis_-_Thelypteris_palustris_-_Symplocarpus_foetidus_Seepage_Meadow
AssociationTP1.b1CEGL006448Mid-Atlantic Rich Seep
Vernonia noveboracensis - Thelypteris palustris - Symplocarpus foetidus Seepage Meadow
G1G1
United States (NNR): NJ (SNR), NY (SNR), PA (S1)
TP1TP1.bTP1.b1TP1.b1.NcM061G189A3374Impatiens capensis - Symplocarpus foetidus - Caltha palustris Seep Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.835678/(Betula_nigra_Ilex_verticillata)_-_Andropogon_gerardii_-_Solidago_simplex_var_racemosa_Riverscour_Wet_Meadow
AssociationTP1.b1CEGL006623Appalachian Acidic Sandstone Rivershore Prairie
(Betula nigra, Ilex verticillata) / Andropogon gerardii - Solidago simplex var. racemosa Riverscour Wet Meadow
G2G2
United States (NNR): PA (S1), WV (S2)
TP1TP1.bTP1.b1TP1.b1.NcM881G753A2069Andropogon gerardii - Sorghastrum nutans Appalachian Riverscour Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.802098/(Hypericum_prolificum_Eubotrys_racemosa)_-_Schizachyrium_scoparium_-_Solidago_simplex_var_racemosa_-_Ionactis_linariifolius_Riverscour_Wet_Meadow
AssociationTP1.b1CEGL006491Northern Piedmont Riverside Outcrop Barrens
(Hypericum prolificum, Eubotrys racemosa) / Schizachyrium scoparium - Solidago simplex var. racemosa - Ionactis linariifolius Riverscour Wet Meadow
G2G2
United States (NNR): MD (S1), PA (S1), VA (S1)
TP1TP1.bTP1.b1TP1.b1.NcM881G753A2069Andropogon gerardii - Sorghastrum nutans Appalachian Riverscour Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.800164/Rhododendron_arborescens_-_Marshallia_grandiflora_-_Triantha_glutinosa_-_Platanthera_flava_var_herbiola_Riverscour_Wet_Meadow
AssociationTP1.b1CEGL006598Barbara's-Buttons Riverscour
Rhododendron arborescens / Marshallia grandiflora - Triantha glutinosa - Platanthera flava var. herbiola Riverscour Wet Meadow
G1G1
United States (NNR): PA (SNR), WV (S1)
TP1TP1.bTP1.b1TP1.b1.NcM881G753A2069Andropogon gerardii - Sorghastrum nutans Appalachian Riverscour Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.689342/Salix_spp_-_Andropogon_gerardii_-_Sorghastrum_nutans_Riverscour_Wet_Meadow
AssociationTP1.b1CEGL005175Midwestern Brush Prairie Gravel Wash
Salix spp. / Andropogon gerardii - Sorghastrum nutans Riverscour Wet Meadow
G2QG2
United States (NNR): IL (SNR), IN (SNR), PA (S2)
TP1TP1.bTP1.b1TP1.b1.NcM881G753A2070Panicum virgatum - Andropogon gerardii Interior Gravel Riverscour Prairie Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.690014/Andropogon_gerardii_-_Campanula_rotundifolia_-_Solidago_simplex_Riverscour
AssociationTP1.b1CEGL006284Northern Riverscour Rock Outcrop
Andropogon gerardii - Campanula rotundifolia - Solidago simplex Riverscour
G2G2
United States (NNR): MA (SNR), ME (SNR), NH (SNR), NJ (S1), NY (SNR), PA (SNR), VT (SNR)
TP1TP1.bTP1.b1TP1.b1.NcM881G925A3826Andropogon gerardii - Campanula rotundifolia - Anemone virginiana var. alba Riverscour Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.687924/Carex_prairea_-_Carex_stricta_-_Pycnanthemum_virginianum_Fen
AssociationTP1.c2CEGL006551Prairie Sedge - Upright Sedge Fen
Carex prairea - Carex stricta - Pycnanthemum virginianum Fen
G1G3G2
United States (NNR): PA (S1)
TP1TP1.cTP1.c2TP1.c2.NaM125G805A4479Dasiphora fruticosa - Carex flava - Carex tetanica Alkaline Fen Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.687910/Carex_tetanica_-_Carex_prairea_-_Eleocharis_erythropoda_-_Lysimachia_quadriflora_Fen
AssociationTP1.c2CEGL006170Shenandoah Valley Wet Prairie
Carex tetanica - Carex prairea - Eleocharis erythropoda - Lysimachia quadriflora Fen
G1QG1
United States (NNR): PA (S1), VA (S1), WV (S1)
TP1TP1.cTP1.c2TP1.c2.NaM125G805A4479Dasiphora fruticosa - Carex flava - Carex tetanica Alkaline Fen Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.684789/Cornus_sericea_-_Cornus_amomum_-_Aronia_melanocarpa_-_Viburnum_lentago_Fen
AssociationTP1.c2CEGL005088Allegheny Tall Shrub Rich Fen
Cornus sericea - Cornus amomum - Aronia melanocarpa - Viburnum lentago Fen
G2QG2
United States (NNR): NY (SNR), OH (SNR), PA (S2)
TP1TP1.cTP1.c2TP1.c2.NaM125G805A4479Dasiphora fruticosa - Carex flava - Carex tetanica Alkaline Fen Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.685846/Juniperus_virginiana_-_Dasiphora_fruticosa_-_Carex_flava_-_Carex_tetanica_Fen
AssociationTP1.c2CEGL006357Pasture Fen
Juniperus virginiana / Dasiphora fruticosa / Carex flava - Carex tetanica Fen
G1G2G1
United States (NNR): NJ (S1), NY (SNR), PA (S1)
TP1TP1.cTP1.c2TP1.c2.NaM125G805A4479Dasiphora fruticosa - Carex flava - Carex tetanica Alkaline Fen Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.689623/Morella_pensylvanica_-_Dasiphora_fruticosa_-_Carex_sterilis_-_Carex_flava_Fen
AssociationTP1.c2CEGL006103Northern Piedmont Rich Fen
Morella pensylvanica - Dasiphora fruticosa / Carex sterilis - Carex flava Fen
G2G2
United States (NNR): NJ (S2), PA (SNR)
TP1TP1.cTP1.c2TP1.c2.NaM125G805A4479Dasiphora fruticosa - Carex flava - Carex tetanica Alkaline Fen Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.689508/Myrica_gale_-_Dasiphora_fruticosa_-_Carex_lasiocarpa_-_Cladium_mariscoides_Fen
AssociationTP1.c2CEGL006068Medium Graminoid Fen
Myrica gale - Dasiphora fruticosa / Carex lasiocarpa - Cladium mariscoides Fen
G2G3G2
United States (NNR): CT (SNR), MA (SNR), NJ (S1), NY (SNR), PA (S2), VT (SNR)
TP1TP1.cTP1.c2TP1.c2.NbM126G804A4401Chamaedaphne calyculata - Myrica gale / Carex lasiocarpa Fen Alliance Alliance
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https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.688207/Populus_deltoides_-_(Juniperus_virginiana)_Dune_Woodland
AssociationTP2.a1CEGL005119Cottonwood Dune Open Woodland
Populus deltoides - (Juniperus virginiana) Dune Woodland
G1G2G1
Canada (NNR): ON (SNR)
United States (NNR): MI (SNR), NY (SNR), OH (SNR), PA (S1)
TP2TP2.aTP2.a1TP2.a1.NbM554G089A1493Populus deltoides Dune Woodland Alliance Alliance
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Report Generated February 02, 2026
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About the data
https://explorer.natureserve.org/AboutTheData
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Search Criteria:
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Include only standard ecosystems.
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StatusRounded Global StatusG1,G2
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LocationUnited StatesPA
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