Ontologia

Commune · FRA

La Chevallerais

France

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

Species observed

571

Observations

4 861

Area

10,8km²

Ecological tissue

Sample of 42 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 La Chevallerais : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 88 interactions GloBI sur 4 types (connectance 10.2%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
88
Connectance
0.102
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

571 distinct species · 4 861 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 861 obs · 2 cellules
Obs. / cellule
≥ 2 970
2 970–2 969
2 970–2 969
2 970–2 969
< 2 970

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

Climate

Mean T°

12,0°C

Annual rain

824mm

Warmest m°

23,4°C

Coldest m°

2,6°C

Elevation: 28 m on average (min 20 m, max 43 m)

Bioclimatic detailsExpert
Annual mean temp.
12,0°C
Annual rain
824mm
Warmest month
23,4°C
Coldest month
2,6°C
Mean alt.
28m
Min
20m
Max
43m
Std. dev.
6m
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

39,5g/kg

Clay

17,7%

Sand

33,2%

Silt

49,1%

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

Dominant lithology: ssGLiMaggregated to Loire-Atlantique

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,8
Org. C
62,9g/kg
Clay
16,7%
Sand
34,0%
Silt
49,2%
5–15 cm
pH H₂O
5,8
Org. C
29,3g/kg
Clay
18,4%
Sand
32,7%
Silt
48,9%
15–30 cm
pH H₂O
5,8
Org. C
26,4g/kg
Clay
18,1%
Sand
32,8%
Silt
49,2%

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

Land cover

Forest9.8%
Crops52.8%
Built-up1.6%
Bare soil0.8%
Other (grassland, water…)35.1%

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

Hydrology1 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

4,5km

Basins crossed

1

Max stream order

3

Max drainage

725km²

Discharge in basins

0,2m³/s

Mean precip.

778mm/an

Mean T°

11,4°C

Moisture idx

-0,04

Max snow

5%

Mean runoff

494mm/an

Mean elev. (basins)

39m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Built-up

156,0%

Pesticides

43,5kg/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.