Ontologia

Commune · FRA

Chasnais

France

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

Species observed

1 772

Observations

34 506

Area

11km²

Ecological tissue

Sample of 34 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 Chasnais : 26 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 5 types (connectance 15.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
101
Connectance
0.152
Patrimoniales
3
Plus dense que (national)0 %(top 100%)

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

Species present

1 772 distinct species · 34 506 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

34 506 obs · 3 cellules
Obs. / cellule
≥ 19 114
19 114–19 113
19 114–19 113
12 127–19 113
< 12 127

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

823mm

Warmest m°

23,9°C

Coldest m°

3,5°C

Elevation: 8 m on average (min 2 m, max 23 m)

Bioclimatic detailsExpert
Annual mean temp.
12,7°C
Annual rain
823mm
Warmest month
23,9°C
Coldest month
3,5°C
Mean alt.
8m
Min
2m
Max
23m
Std. dev.
6m
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

6,7

Org. C

32,9g/kg

Clay

29,9%

Sand

22,3%

Silt

47,8%

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

Dominant lithology: ssGLiMaggregated to Vendée

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
55,1g/kg
Clay
28,3%
Sand
22,0%
Silt
49,7%
5–15 cm
pH H₂O
6,7
Org. C
22,1g/kg
Clay
29,6%
Sand
21,0%
Silt
49,4%
15–30 cm
pH H₂O
6,7
Org. C
21,5g/kg
Clay
31,8%
Sand
23,9%
Silt
44,4%

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

Land cover

Forest6.9%
Crops62.5%
Built-up1.1%
Bare soil0.8%
Other (grassland, water…)28.8%

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

1

Max drainage

1 999km²

Discharge in basins

0,1m³/s

Mean precip.

761mm/an

Mean T°

12,5°C

Moisture idx

-0,06

Max snow

4%

Mean runoff

519mm/an

Mean elev. (basins)

5m

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

0,2nW

Built-up

108,9%

Pesticides

41,9kg/km²

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

Protected areas4

IUCN Not Reported · 2IUCN 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) · 2014

479 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.