Haute Vallée De Chevreuse
IUCN VRegional Nature Park · 1985
659 km²
Commune · FRA
Gazeran
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 838
Observations
26 554
Area
25,9km²
Ecological tissue
Sample of 43 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 Gazeran : 35 espèces reliées par 86 interactions GloBI sur 5 types (connectance 9.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
43
Interactions affichées
86
Connectance
0.095
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
1 838 distinct species · 26 554 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,7°C
Annual rain
694mm
Warmest m°
23,0°C
Coldest m°
0,8°C
Elevation: 162 m on average (min 153 m, max 171 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,7°C
Annual rain
694mm
Warmest month
23,0°C
Coldest month
0,8°C
Mean alt.
162m
Min
153m
Max
171m
Std. dev.
5m
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
36,4g/kg
Clay
23,5%
Sand
22,0%
Silt
54,5%
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
5,9
Org. C
69,1g/kg
Clay
21,9%
Sand
22,4%
Silt
55,6%
5–15 cm
pH H₂O
6,2
Org. C
25,3g/kg
Clay
23,4%
Sand
21,6%
Silt
55,0%
15–30 cm
pH H₂O
6,2
Org. C
14,8g/kg
Clay
25,1%
Sand
21,9%
Silt
52,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest30.4%
Crops57.0%
Built-up0.8%
Bare soil0.2%
Other (grassland, water…)11.6%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
5,2km
Basins crossed
1
Max stream order
1
Max drainage
2 091km²
Discharge in basins
0,6m³/s
Mean precip.
634mm/an
Mean T°
10,3°C
Moisture idx
-0,21
Max snow
7%
Mean runoff
236mm/an
Mean elev. (basins)
149m
Watersheds crossing here
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
1,4nW
Built-up
75,9%
Pesticides
47,3kg/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
Forêt de Rambouillet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2010
20 km²
Marais Du Cerisaie
IUCN IVForest Managed Biological Reserve · 1988
1 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.