The Nature Conservancy
IUCN VEasement · 1985
213 km²
County · USA
Smyth
United States
CfbTemperate, no dry season, warm summer(46 %)
Species observed
2 289
Observations
115 446
Area
1 167,2km²
Ecological tissue
Sample of 39 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Smyth : 30 espèces reliées par 67 interactions GloBI sur 4 types (connectance 9.0%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
39
Interactions affichées
67
Connectance
0.090
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
2 289 distinct species · 115 446 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,1°C
Annual rain
1 104mm
Warmest m°
26,1°C
Coldest m°
-3,9°C
Elevation: 818 m on average (min 556 m, max 1 621 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,1°C
Annual rain
1 104mm
Warmest month
26,1°C
Coldest month
-3,9°C
Mean alt.
818m
Min
556m
Max
1 621m
Std. dev.
159m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(46 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,2
Org. C
46,8g/kg
Clay
29,3%
Sand
27,0%
Silt
43,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,2
Org. C
88,5g/kg
Clay
27,2%
Sand
28,2%
Silt
44,6%
5–15 cm
pH H₂O
5,2
Org. C
36,2g/kg
Clay
28,3%
Sand
27,5%
Silt
44,1%
15–30 cm
pH H₂O
5,3
Org. C
15,8g/kg
Clay
32,4%
Sand
25,4%
Silt
42,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest72.9%
Crops7.5%
Built-up0.5%
Bare soil0.2%
Other (grassland, water…)18.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 1 lakes · 18 rivers
Hydrology metrics for this exact territory
Stream length here
263,3km
Lake surface here
0,34km²
Basins crossed
8
Max stream order
4
Max drainage
2 564km²
Discharge in basins
21,9m³/s
Mean precip.
1 156mm/an
Mean T°
11,1°C
Moisture idx
0,02
Max snow
5%
Mean runoff
566mm/an
Mean elev. (basins)
762m
Watersheds crossing here
- Bassin de Middle Fork Holston Riversub-area617,3 km²overlap409.34 km²35%
- Bassin de North Fork Holston Riversub-area1 869 km²overlap379.87 km²33%
- Bassin de South Fork Holston Riversub-area834,1 km²overlap290.48 km²25%
- Bassin de Cripple Creeksub-area367,7 km²overlap84.26 km²7%
- Bassin de Reed Creeksub-area700,2 km²overlap2.02 km²0%
- Bassin de New Riversub-area665,4 km²overlap0.64 km²0%
- Bassin de Clinch Riversub-area2 564,1 km²overlap0.52 km²0%
- Bassin de North Fork New Riversub-area757,8 km²overlap0.10 km²0%
Lakes (1, top by area)
Rivers / streams (18, ord ≥ 4)
- North Fork Holston Riverord 4len here74.04 km31%total237 km
- Middle Fork Holston Riverord 3len here60.56 km56%total109 km
- South Fork Holston Riverord 5len here50.95 km16%total314 km
- Hungry Mother Creekord 2len here11.75 km100%total12 km
- Bear Creekord 6len here10.44 km0%total2230 km
- Blue Spring Creekord 2len here9.44 km46%total20 km
- Whitetop Laurel Creekord 2len here7.94 km51%total16 km
- Walker Creekord 4len here6.95 km8%total90 km
- White Rock Creekord 3len here6.06 km4%total153 km
- Laurel Creekord 4len here5.15 km2%total315 km
- Hurricane Creekord 4len here4.98 km1%total477 km
- Rowland Creekord 1len here3.99 km100%total4 km
6 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,7nW
Built-up
50,0%
Pesticides
5,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas16
IUCN Not Assigned · 7IUCN V · 5IUCN Ib · 3IUCN III · 1🌊 Marine · 1
Clinch Mountain
IUCN VWildlife Management Area · 1964
101 km²
Lewis Fork
IUCN IbWilderness · 1984
25 km²
Raccoon Branch
IUCN IbWilderness · 2009
17 km²
Lynn Camp Creek
IUCN IbWilderness Study Area · 2009
13 km²
Hungry Mother
IUCN IIIState Park · 1936
12 km²
Complete list16 protected areas
- The Nature ConservancyEasementIUCN V1985213 km²
- Clinch MountainWildlife Management AreaIUCN V1964101 km²
- Lewis ForkWildernessIUCN Ib198425 km²
- Raccoon BranchWildernessIUCN Ib200917 km²
- Lynn Camp CreekWilderness Study AreaIUCN Ib200913 km²
- Hungry MotherState ParkIUCN III193612 km²
- Lick CreekState Natural AreaIUCN V19613 km²
- Redrock MtnState Natural Area PreserveIUCN V20043 km²
- Smy-Vof-4031Conservation EasementIUCN Not Assigned20151 km²
- Smy-Vof-4062Conservation EasementIUCN Not Assigned20151 km²
- Smy-03984Conservation EasementIUCN Not Assigned20151 km²
- Smy-Vof-4064Conservation EasementIUCN Not Assigned20150 km²
- Wetlands Reserve Program (WRP), Smyth, VAReserve ProgramIUCN V19990 km²
- Smy-Vof-4039Conservation EasementIUCN Not Assigned20150 km²
- Atlantic Coast Conservancy/Pelican Coast Conservancy Conservation Easement E201110Conservation EasementIUCN Not Assigned20120 km²
- Atlantic Coast Conservancy/Pelican Coast Conservancy Conservation Easement E201109Conservation EasementIUCN Not Assigned20120 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN