Ontologia

Department · FRA

Ille-et-Vilaine

France

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

Species observed

10 675

Observations

1 770 480

Area

6 860,8km²

Ecological tissue

Graphe en cours d’indexation

Calcul du tissu écologique de cette entité.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).

Species present

10 675 distinct species · 1 770 480 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 770 480 obs · 244 cellules
Obs. / cellule
≥ 32 105
15 469–32 104
8 361–15 468
5 524–8 360
< 5 524

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

Climate

Mean T°

11,4°C

Annual rain

828mm

Warmest m°

22,4°C

Coldest m°

2,5°C

Elevation: 76 m on average (min -23 m, max 239 m)

Bioclimatic detailsExpert
Annual mean temp.
11,4°C
Annual rain
828mm
Warmest month
22,4°C
Coldest month
2,5°C
Mean alt.
76m
Min
-23m
Max
239m
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

6,1

Org. C

36,0g/kg

Clay

23,0%

Sand

20,8%

Silt

56,2%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,0
Org. C
57,0g/kg
Clay
21,6%
Sand
21,5%
Silt
56,9%
5–15 cm
pH H₂O
6,1
Org. C
28,4g/kg
Clay
23,1%
Sand
20,4%
Silt
56,5%
15–30 cm
pH H₂O
6,1
Org. C
22,5g/kg
Clay
24,4%
Sand
20,4%
Silt
55,1%

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

Land cover

Forest16.3%
Crops49.5%
Built-up1.6%
Bare soil0.6%
Other (grassland, water…)32.2%

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

Hydrology14 basins · 47 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

1 512,6km

Lake surface here

21,37km²

Basins crossed

14

Max stream order

5

Max drainage

5 676km²

Discharge in basins

168,3m³/s

Mean precip.

744mm/an

Mean T°

11,1°C

Moisture idx

-0,05

Max snow

8%

Mean runoff

508mm/an

Mean elev. (basins)

76m

Watersheds crossing here

5 more basins

Lakes (47, top by area)

38 more lakes

Rivers / streams (100, ord ≥ 4)

88 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

0,6nW

Built-up

156,0%

Pesticides

44,6kg/km²

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

Protected areas54

IUCN Not Reported · 27IUCN IV · 26IUCN V · 1🌊 Marine · 18

Chausey

IUCN Not Reported

Special Protection Area (Birds Directive) · 2005

823 km²

Marais de Vilaine

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2016

109 km²

Complete list

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

Sub-administrations200

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.