Ontologia

Commune · FRA

Saint-Arnac

France

CsaTemperate, dry summer, hot summer(58 %)

Species observed

1 201

Observations

9 224

Area

7,1km²

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 Saint-Arnac : 33 espèces + 5 bulles famille, 69 interactions GloBI documentées sur 4 types (connectance 9.8%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
38
Interactions affichées
69
Connectance
0.098
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

1 201 distinct species · 9 224 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 224 obs · 1 cellules
Obs. / cellule
≥ 9 224
9 224–9 223
9 224–9 223
9 224–9 223
< 9 224

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

Climate

Mean T°

13,2°C

Annual rain

801mm

Warmest m°

26,4°C

Coldest m°

1,8°C

Elevation: 343 m on average (min 280 m, max 392 m)

Bioclimatic detailsExpert
Annual mean temp.
13,2°C
Annual rain
801mm
Warmest month
26,4°C
Coldest month
1,8°C
Mean alt.
343m
Min
280m
Max
392m
Std. dev.
39m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(58 %)Temperate

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

Soil & lithology

pH H₂O

7,2

Org. C

32,1g/kg

Clay

26,4%

Sand

34,4%

Silt

39,2%

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

Dominant lithology: mtGLiMaggregated to Pyrénées-Orientales

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
52,0g/kg
Clay
25,9%
Sand
34,6%
Silt
39,6%
5–15 cm
pH H₂O
7,2
Org. C
23,8g/kg
Clay
24,6%
Sand
35,1%
Silt
40,3%
15–30 cm
pH H₂O
7,2
Org. C
20,5g/kg
Clay
28,7%
Sand
33,5%
Silt
37,7%

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

Land cover

Forest37.2%
Crops2.7%
Built-up0.4%
Bare soil5.6%
Other (grassland, water…)54.1%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

1,5km

Basins crossed

1

Max stream order

2

Max drainage

1 123km²

Discharge in basins

0,1m³/s

Mean precip.

742mm/an

Mean T°

13,0°C

Moisture idx

-0,19

Max snow

6%

Mean runoff

460mm/an

Mean elev. (basins)

419m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

38,3%

Pesticides

21,7kg/km²

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

Protected areas1

IUCN V · 1

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

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.