Ontologia

County · USA

Roanoke

United States

CfaTemperate, no dry season, hot summer(86 %)

Species observed

2 277

Observations

282 373

Area

647,6km²

Ecological tissue

Sample of 33 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 Roanoke : 23 espèces reliées par 71 interactions GloBI sur 4 types (connectance 11.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
71
Connectance
0.119
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

2 277 distinct species · 282 373 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

282 373 obs · 19 cellules
Obs. / cellule
≥ 59 779
46 709–59 778
12 113–46 708
9 851–12 112
< 9 851

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

12,4°C

Annual rain

1 103mm

Warmest m°

28,4°C

Coldest m°

-3,0°C

Elevation: 527 m on average (min 284 m, max 1 045 m)

Bioclimatic detailsExpert
Annual mean temp.
12,4°C
Annual rain
1 103mm
Warmest month
28,4°C
Coldest month
-3,0°C
Mean alt.
527m
Min
284m
Max
1 045m
Std. dev.
171m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(86 %)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

45,1g/kg

Clay

26,8%

Sand

32,2%

Silt

41,0%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
88,2g/kg
Clay
24,8%
Sand
33,4%
Silt
41,8%
5–15 cm
pH H₂O
5,2
Org. C
31,5g/kg
Clay
25,1%
Sand
33,0%
Silt
41,9%
15–30 cm
pH H₂O
5,2
Org. C
15,6g/kg
Clay
30,5%
Sand
30,2%
Silt
39,3%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest71.6%
Crops2.5%
Built-up1.8%
Bare soil0.2%
Other (grassland, water…)23.9%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology3 basins · 2 lakes · 24 rivers

Hydrology metrics for this exact territory

Stream length here

131,3km

Lake surface here

0,55km²

Basins crossed

3

Max stream order

4

Max drainage

5 770km²

Discharge in basins

9,5m³/s

Mean precip.

1 043mm/an

Mean T°

12,2°C

Moisture idx

-0,11

Max snow

3%

Mean runoff

431mm/an

Mean elev. (basins)

491m

Watersheds crossing here

Lakes (2, top by area)

Rivers / streams (24, ord ≥ 4)

12 more river segments

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

1hab/km²

Night light

2,6nW

Built-up

183,3%

Pesticides

3,7kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas12

IUCN V · 9IUCN Ib · 2IUCN Not Assigned · 1🌊 Marine · 1

Havens

IUCN V

Wildlife Management Area · 1930

38 km²

Complete list

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN