Ontologia

Commune · FRA

Varennes-sur-Seine

France

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

Species observed

1 786

Observations

55 520

Area

10,2km²

Ecological tissue

Sample of 45 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-sur-Seine : 34 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 139 interactions GloBI sur 5 types (connectance 14.0%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
45
Interactions affichées
139
Connectance
0.140
Patrimoniales
4
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

1 786 distinct species · 55 520 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

55 520 obs · 1 cellules
Obs. / cellule
≥ 55 520
55 520–55 519
55 520–55 519
55 520–55 519
< 55 520

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

Climate

Mean T°

11,5°C

Annual rain

691mm

Warmest m°

24,3°C

Coldest m°

1,1°C

Elevation: 55 m on average (min 49 m, max 97 m)

Bioclimatic detailsExpert
Annual mean temp.
11,5°C
Annual rain
691mm
Warmest month
24,3°C
Coldest month
1,1°C
Mean alt.
55m
Min
49m
Max
97m
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

6,4

Clay

23,8%

Sand

29,6%

Silt

46,6%

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

Dominant lithology: suGLiMaggregated to Seine-et-Marne

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,3
Clay
22,7%
Sand
30,0%
Silt
47,3%
5–15 cm
pH H₂O
6,6
Clay
23,2%
Sand
29,8%
Silt
47,0%
15–30 cm
pH H₂O
6,5
Clay
25,6%
Sand
29,0%
Silt
45,4%

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

Land cover

Forest6.2%
Crops40.6%
Built-up4.6%
Bare soil1.4%
Other (grassland, water…)47.2%

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

Hydrology2 basins · 2 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

3,0km

Lake surface here

0,78km²

Basins crossed

2

Max stream order

6

Max drainage

21 147km²

Discharge in basins

15,7m³/s

Mean precip.

642mm/an

Mean T°

10,9°C

Moisture idx

-0,25

Max snow

6%

Mean runoff

203mm/an

Mean elev. (basins)

95m

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

2hab/km²

Night light

5,2nW

Built-up

463,9%

Pesticides

45,9kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas2

IUCN Not Reported · 1IUCN IV · 1

grand marais

IUCN IV

Land acquired by a regional conservatory of natural areas · 2004

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.