Ontologia

Commune · FRA

Varennes-Jarcy

France

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

Species observed

2 780

Observations

104 460

Area

5,5km²

Ecological tissue

Sample of 36 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 Varennes-Jarcy : 26 espèces reliées par 114 interactions GloBI sur 6 types (connectance 18.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
114
Connectance
0.181
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

2 780 distinct species · 104 460 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

104 460 obs · 1 cellules
Obs. / cellule
≥ 104 460
104 460–104 459
104 460–104 459
104 460–104 459
< 104 460

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

Climate

Mean T°

11,3°C

Annual rain

704mm

Warmest m°

23,8°C

Coldest m°

1,1°C

Elevation: 72 m on average (min 61 m, max 92 m)

Bioclimatic detailsExpert
Annual mean temp.
11,3°C
Annual rain
704mm
Warmest month
23,8°C
Coldest month
1,1°C
Mean alt.
72m
Min
61m
Max
92m
Std. dev.
13m
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

21,3g/kg

Clay

27,7%

Sand

23,4%

Silt

48,9%

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
37,5g/kg
Clay
25,6%
Sand
23,9%
Silt
50,5%
5–15 cm
pH H₂O
7,0
Org. C
14,6g/kg
Clay
27,3%
Sand
23,2%
Silt
49,5%
15–30 cm
pH H₂O
7,0
Org. C
11,9g/kg
Clay
30,3%
Sand
23,0%
Silt
46,8%

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

Land cover

Forest14.8%
Crops48.6%
Built-up4.2%
Bare soil0.2%
Other (grassland, water…)32.2%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

2,8km

Basins crossed

1

Max stream order

3

Max drainage

30 655km²

Discharge in basins

0,5m³/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

3hab/km²

Night light

8,8nW

Built-up

415,0%

Pesticides

31,8kg/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.