Ontologia

County · USA

Calhoun

United States

CfaTemperate, no dry season, hot summer(100 %)

Species observed

2 584

Observations

132 005

Area

1 590,6km²

Ecological tissue

Sample of 38 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 Calhoun : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 4 types (connectance 10.8%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
80
Connectance
0.108
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

2 584 distinct species · 132 005 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

132 005 obs · 44 cellules
Obs. / cellule
≥ 35 454
6 247–35 453
2 085–6 246
672–2 084
< 672

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

Climate

Mean T°

16,6°C

Annual rain

1 404mm

Warmest m°

31,3°C

Coldest m°

2,2°C

Elevation: 229 m on average (min 149 m, max 503 m)

Bioclimatic detailsExpert
Annual mean temp.
16,6°C
Annual rain
1 404mm
Warmest month
31,3°C
Coldest month
2,2°C
Mean alt.
229m
Min
149m
Max
503m
Std. dev.
59m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

5,3

Org. C

23,1g/kg

Clay

22,5%

Sand

34,9%

Silt

42,5%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
42,6g/kg
Clay
18,7%
Sand
37,2%
Silt
44,1%
5–15 cm
pH H₂O
5,3
Org. C
18,0g/kg
Clay
20,0%
Sand
36,4%
Silt
43,6%
15–30 cm
pH H₂O
5,2
Org. C
8,7g/kg
Clay
28,9%
Sand
31,2%
Silt
39,9%

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

Land cover

Forest67.8%
Crops4.5%
Built-up1.5%
Bare soil0.3%
Other (grassland, water…)25.9%

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

Hydrology3 basins · 5 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

125,7km

Lake surface here

6,22km²

Basins crossed

3

Max stream order

5

Max drainage

18 541km²

Discharge in basins

159,9m³/s

Mean precip.

1 414mm/an

Mean T°

15,7°C

Moisture idx

0,04

Mean runoff

555mm/an

Mean elev. (basins)

235m

Watersheds crossing here

Lakes (5, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

2,7nW

Built-up

150,6%

Pesticides

14,0kg/km²

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

Protected areas4

IUCN V · 2IUCN IV · 1IUCN Ib · 1

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