Ontologia

Commune · FRA

Randan

France

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

Species observed

1 115

Observations

4 439

Area

15,2km²

Ecological tissue

Sample of 37 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 Randan : 33 espèces + 4 bulles famille, 79 interactions GloBI documentées sur 6 types (connectance 11.9%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
37
Interactions affichées
79
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

1 115 distinct species · 4 439 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 439 obs · 1 cellules
Obs. / cellule
≥ 4 439
4 439–4 438
4 439–4 438
4 439–4 438
< 4 439

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

Climate

Mean T°

11,2°C

Annual rain

875mm

Warmest m°

24,6°C

Coldest m°

-0,0°C

Elevation: 352 m on average (min 310 m, max 392 m)

Bioclimatic detailsExpert
Annual mean temp.
11,2°C
Annual rain
875mm
Warmest month
24,6°C
Coldest month
-0,0°C
Mean alt.
352m
Min
310m
Max
392m
Std. dev.
25m
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

6,6

Org. C

28,6g/kg

Clay

36,1%

Sand

32,6%

Silt

31,3%

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

Dominant lithology: vbGLiMaggregated to Puy-de-Dôme

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,5
Org. C
46,0g/kg
Clay
32,9%
Sand
34,8%
Silt
32,2%
5–15 cm
pH H₂O
6,6
Org. C
23,6g/kg
Clay
36,3%
Sand
31,9%
Silt
31,7%
15–30 cm
pH H₂O
6,6
Org. C
16,2g/kg
Clay
38,9%
Sand
31,1%
Silt
30,0%

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

Land cover

Forest28.1%
Crops52.2%
Built-up1.1%
Bare soil0.3%
Other (grassland, water…)18.2%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

2,6km

Basins crossed

2

Max stream order

2

Max drainage

9 978km²

Discharge in basins

4,9m³/s

Mean precip.

702mm/an

Mean T°

10,6°C

Moisture idx

-0,23

Max snow

5%

Mean runoff

256mm/an

Mean elev. (basins)

340m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

111,7%

Pesticides

43,2kg/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.