Haute Vallée De Chevreuse
IUCN VRegional Nature Park · 1985
659 km²
Commune · FRA
Cernay-la-Ville
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 535
Observations
188 206
Area
10,2km²
Ecological tissue
Sample of 34 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 Cernay-la-Ville : 27 espèces reliées par 96 interactions GloBI sur 5 types (connectance 17.1%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
34
Interactions affichées
96
Connectance
0.171
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
3 535 distinct species · 188 206 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,7°C
Annual rain
704mm
Warmest m°
23,0°C
Coldest m°
0,8°C
Elevation: 163 m on average (min 151 m, max 174 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,7°C
Annual rain
704mm
Warmest month
23,0°C
Coldest month
0,8°C
Mean alt.
163m
Min
151m
Max
174m
Std. dev.
9m
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
6,2
Org. C
37,5g/kg
Clay
27,3%
Sand
20,4%
Silt
52,3%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Yvelines
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,1
Org. C
64,2g/kg
Clay
26,1%
Sand
20,7%
Silt
53,2%
5–15 cm
pH H₂O
6,3
Org. C
32,1g/kg
Clay
27,6%
Sand
19,8%
Silt
52,6%
15–30 cm
pH H₂O
6,3
Org. C
16,2g/kg
Clay
28,2%
Sand
20,6%
Silt
51,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest29.3%
Crops55.4%
Built-up0.9%
Bare soil0.1%
Other (grassland, water…)14.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
2,1km
Basins crossed
1
Max stream order
2
Max drainage
30 655km²
Discharge in basins
1,0m³/s
Mean precip.
645mm/an
Mean T°
10,7°C
Moisture idx
-0,21
Max snow
5%
Mean runoff
196mm/an
Mean elev. (basins)
117m
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
1,1nW
Built-up
89,6%
Pesticides
30,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN Not Reported · 2IUCN V · 1IUCN IV · 1
Massif de Rambouillet et zones humides proches
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2006
171 km²
Tourbières et prairies tourbeuses de la forêt d'Yveline
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2010
8 km²
Vallée Des Vaux
IUCN IVForest Managed Biological Reserve · 1988
0 km²
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.