Haute Vallée De Chevreuse
IUCN VRegional Nature Park · 1985
659 km²
Commune · FRA
Le Perray-en-Yvelines
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 524
Observations
187 476
Area
13,3km²
Ecological tissue
Sample of 41 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 Le Perray-en-Yvelines : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 6 types (connectance 12.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
42
Interactions affichées
110
Connectance
0.128
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 524 distinct species · 187 476 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,6°C
Annual rain
723mm
Warmest m°
22,9°C
Coldest m°
0,8°C
Elevation: 175 m on average (min 169 m, max 180 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,6°C
Annual rain
723mm
Warmest month
22,9°C
Coldest month
0,8°C
Mean alt.
175m
Min
169m
Max
180m
Std. dev.
2m
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
5,6
Org. C
34,6g/kg
Clay
25,3%
Sand
23,7%
Silt
50,9%
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
5,4
Org. C
66,4g/kg
Clay
24,1%
Sand
24,3%
Silt
51,6%
5–15 cm
pH H₂O
5,6
Org. C
24,3g/kg
Clay
24,7%
Sand
23,6%
Silt
51,7%
15–30 cm
pH H₂O
5,6
Org. C
13,1g/kg
Clay
27,2%
Sand
23,4%
Silt
49,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest24.2%
Crops37.0%
Built-up3.8%
Bare soil0.3%
Other (grassland, water…)34.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
2,7km
Lake surface here
0,49km²
Basins crossed
2
Max stream order
1
Max drainage
30 655km²
Discharge in basins
1,2m³/s
Mean precip.
644mm/an
Mean T°
10,7°C
Moisture idx
-0,21
Max snow
7%
Mean runoff
200mm/an
Mean elev. (basins)
120m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
3hab/km²
Night light
1,8nW
Built-up
384,0%
Pesticides
47,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN IV · 2IUCN V · 1IUCN Not Reported · 1
Massif de Rambouillet et zones humides proches
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2006
171 km²
Etangs et rigoles d’Yveline
IUCN IVNational Nature Reserve · 2021
3 km²
Etangs De Hollande
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.