Ontologia

Commune · FRA

Vallans

France

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

Species observed

864

Observations

8 653

Area

9,1km²

Ecological tissue

Sample of 40 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 Vallans : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 95 interactions GloBI sur 6 types (connectance 12.2%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
95
Connectance
0.122
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

864 distinct species · 8 653 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

8 653 obs · 1 cellules
Obs. / cellule
≥ 8 653
8 653–8 652
8 653–8 652
8 653–8 652
< 8 653

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

Climate

Mean T°

12,6°C

Annual rain

872mm

Warmest m°

24,8°C

Coldest m°

2,8°C

Elevation: 33 m on average (min 22 m, max 48 m)

Bioclimatic detailsExpert
Annual mean temp.
12,6°C
Annual rain
872mm
Warmest month
24,8°C
Coldest month
2,8°C
Mean alt.
33m
Min
22m
Max
48m
Std. dev.
10m
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

7,2

Org. C

33,1g/kg

Clay

32,1%

Sand

18,7%

Silt

49,2%

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

Dominant lithology: scGLiMaggregated to Deux-Sèvres

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
53,6g/kg
Clay
30,6%
Sand
18,6%
Silt
50,8%
5–15 cm
pH H₂O
7,3
Org. C
27,0g/kg
Clay
32,3%
Sand
17,2%
Silt
50,6%
15–30 cm
pH H₂O
7,3
Org. C
18,7g/kg
Clay
33,5%
Sand
20,2%
Silt
46,3%

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

Land cover

Forest6.0%
Crops67.7%
Built-up1.2%
Bare soil1.3%
Other (grassland, water…)23.7%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

2,1km

Basins crossed

1

Max stream order

1

Max drainage

495km²

Discharge in basins

0,2m³/s

Mean precip.

805mm/an

Mean T°

12,2°C

Moisture idx

-0,07

Max snow

3%

Mean runoff

534mm/an

Mean elev. (basins)

40m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

1hab/km²

Built-up

119,5%

Pesticides

41,2kg/km²

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

Protected areas5

IUCN Not Reported · 3IUCN V · 1IUCN III · 1🌊 Marine · 4

Marais poitevin

IUCN III

Wetland of International Importance (Ramsar Site) · 2023

690 km²

Marais poitevin

IUCN Not Reported

Special Protection Area (Birds Directive) · 2019

682 km²

Marais Poitevin

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2007

203 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.