Ontologia

Commune · FRA

Varaize

France

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

Species observed

758

Observations

3 465

Area

20,5km²

Ecological tissue

Sample of 33 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 Varaize : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 163 interactions GloBI sur 5 types (connectance 20.9%, filtre Serrano α=0.2). 20 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
163
Connectance
0.209
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

758 distinct species · 3 465 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 465 obs · 1 cellules
Obs. / cellule
≥ 3 465
3 465–3 464
3 465–3 464
3 465–3 464
< 3 465

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

Climate

Mean T°

12,7°C

Annual rain

854mm

Warmest m°

25,1°C

Coldest m°

2,7°C

Elevation: 45 m on average (min 27 m, max 62 m)

Bioclimatic detailsExpert
Annual mean temp.
12,7°C
Annual rain
854mm
Warmest month
25,1°C
Coldest month
2,7°C
Mean alt.
45m
Min
27m
Max
62m
Std. dev.
9m
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

7,4

Org. C

32,9g/kg

Clay

29,5%

Sand

20,8%

Silt

49,7%

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

Dominant lithology: suGLiMaggregated to Charente-Maritime

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,2
Org. C
53,6g/kg
Clay
27,6%
Sand
21,2%
Silt
51,2%
5–15 cm
pH H₂O
7,5
Org. C
28,4g/kg
Clay
30,3%
Sand
19,0%
Silt
50,7%
15–30 cm
pH H₂O
7,5
Org. C
16,7g/kg
Clay
30,5%
Sand
22,1%
Silt
47,4%

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

Land cover

Forest10.2%
Crops67.4%
Built-up0.5%
Bare soil1.9%
Other (grassland, water…)20.1%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

6,3km

Basins crossed

2

Max stream order

2

Max drainage

5 486km²

Discharge in basins

0,4m³/s

Mean precip.

831mm/an

Mean T°

12,1°C

Moisture idx

-0,06

Max snow

2%

Mean runoff

535mm/an

Mean elev. (basins)

67m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

47,0%

Pesticides

41,1kg/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.