Ontologia

Commune · FRA

Saint-Cernin-de-l'Herm

France

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

Species observed

965

Observations

4 529

Area

17,2km²

Ecological tissue

Sample of 36 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-Cernin-de-l'Herm : 33 espèces + 3 bulles famille, 65 interactions GloBI documentées sur 4 types (connectance 10.3%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
36
Interactions affichées
65
Connectance
0.103
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

965 distinct species · 4 529 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 529 obs · 1 cellules
Obs. / cellule
≥ 4 529
4 529–4 528
4 529–4 528
4 529–4 528
< 4 529

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

Climate

Mean T°

12,7°C

Annual rain

932mm

Warmest m°

25,7°C

Coldest m°

2,0°C

Elevation: 229 m on average (min 201 m, max 270 m)

Bioclimatic detailsExpert
Annual mean temp.
12,7°C
Annual rain
932mm
Warmest month
25,7°C
Coldest month
2,0°C
Mean alt.
229m
Min
201m
Max
270m
Std. dev.
19m
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

5,8

Org. C

43,3g/kg

Clay

25,4%

Sand

36,4%

Silt

38,2%

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

Dominant lithology: smGLiMaggregated to Dordogne

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,8
Org. C
79,1g/kg
Clay
24,6%
Sand
36,2%
Silt
39,2%
5–15 cm
pH H₂O
5,9
Org. C
31,3g/kg
Clay
24,7%
Sand
36,6%
Silt
38,6%
15–30 cm
pH H₂O
5,9
Org. C
19,6g/kg
Clay
26,9%
Sand
36,3%
Silt
36,7%

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

Land cover

Forest56.9%
Crops21.0%
Built-up0.4%
Bare soil0.1%
Other (grassland, water…)21.5%

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

Hydrology1 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

8,0km

Basins crossed

1

Max stream order

2

Max drainage

248km²

Discharge in basins

0,2m³/s

Mean precip.

838mm/an

Mean T°

12,0°C

Moisture idx

-0,14

Max snow

3%

Mean runoff

401mm/an

Mean elev. (basins)

216m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

41,6%

Pesticides

21,0kg/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.