Ontologia

Commune · FRA

Orsay

France

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

Species observed

4 644

Observations

245 312

Area

7,5km²

Ecological tissue

Sample of 32 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 Orsay : 20 espèces reliées par 120 interactions GloBI sur 6 types (connectance 21.4%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
120
Connectance
0.214
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

4 644 distinct species · 245 312 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

245 312 obs · 3 cellules
Obs. / cellule
≥ 108 988
108 988–108 987
108 988–108 987
99 393–108 987
< 99 393

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

Climate

Mean T°

11,0°C

Annual rain

704mm

Warmest m°

23,4°C

Coldest m°

1,0°C

Elevation: 122 m on average (min 97 m, max 155 m)

Bioclimatic detailsExpert
Annual mean temp.
11,0°C
Annual rain
704mm
Warmest month
23,4°C
Coldest month
1,0°C
Mean alt.
122m
Min
97m
Max
155m
Std. dev.
8m
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

6,9

Org. C

27,7g/kg

Clay

23,8%

Sand

17,4%

Silt

58,8%

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

Dominant lithology: suGLiMaggregated to Essonne

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
47,4g/kg
Clay
23,5%
Sand
17,8%
Silt
58,8%
5–15 cm
pH H₂O
7,0
Org. C
20,2g/kg
Clay
24,2%
Sand
17,2%
Silt
58,6%
15–30 cm
pH H₂O
7,0
Org. C
15,5g/kg
Clay
23,7%
Sand
17,4%
Silt
59,0%

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

Land cover

Forest21.1%
Crops10.5%
Built-up9.2%
Bare soil0.5%
Other (grassland, water…)58.7%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

2,8km

Basins crossed

2

Max stream order

2

Max drainage

44 526km²

Discharge in basins

0,7m³/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

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

Human pressure

Pop. density

12hab/km²

Night light

13,4nW

Built-up

921,6%

Pesticides

44,2kg/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.