Ontologia

Commune · FRA

Ahun

France

CfbTemperate, no dry season, warm summer(100 %)

Species observed

1 619

Observations

16 000

Area

34,4km²

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 Ahun : 31 espèces + 7 bulles famille, 86 interactions GloBI documentées sur 5 types (connectance 12.2%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
38
Interactions affichées
86
Connectance
0.122
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

1 619 distinct species · 16 000 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

16 003 obs · 1 cellules
Obs. / cellule
≥ 16 003
16 003–16 002
16 003–16 002
16 003–16 002
< 16 003

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

Climate

Mean T°

10,6°C

Annual rain

999mm

Warmest m°

22,9°C

Coldest m°

0,7°C

Elevation: 450 m on average (min 372 m, max 534 m)

Bioclimatic detailsExpert
Annual mean temp.
10,6°C
Annual rain
999mm
Warmest month
22,9°C
Coldest month
0,7°C
Mean alt.
450m
Min
372m
Max
534m
Std. dev.
37m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate

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

Soil & lithology

pH H₂O

5,7

Org. C

45,8g/kg

Clay

21,8%

Sand

47,8%

Silt

30,4%

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

Dominant lithology: paGLiMaggregated to Creuse

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
76,1g/kg
Clay
21,3%
Sand
48,8%
Silt
29,9%
5–15 cm
pH H₂O
5,7
Org. C
39,5g/kg
Clay
20,6%
Sand
49,3%
Silt
30,1%
15–30 cm
pH H₂O
5,7
Org. C
21,7g/kg
Clay
23,4%
Sand
45,3%
Silt
31,3%

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

Land cover

Forest29.3%
Crops37.0%
Built-up0.8%
Bare soil0.4%
Other (grassland, water…)32.6%

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

Hydrology1 basins · 0 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

8,3km

Basins crossed

1

Max stream order

4

Max drainage

1 243km²

Discharge in basins

0,4m³/s

Mean precip.

889mm/an

Mean T°

9,6°C

Moisture idx

0,03

Max snow

6%

Mean runoff

373mm/an

Mean elev. (basins)

536m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

76,9%

Pesticides

27,1kg/km²

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

France-specific data (Phase 2)

ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.