Ontologia

Commune · FRA

Saint-Xandre

France

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

Species observed

1 198

Observations

18 687

Area

13,2km²

Ecological tissue

Sample of 42 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 Saint-Xandre : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 140 interactions GloBI sur 5 types (connectance 16.3%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
140
Connectance
0.163
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

1 198 distinct species · 18 687 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 687 obs · 1 cellules
Obs. / cellule
≥ 18 687
18 687–18 686
18 687–18 686
18 687–18 686
< 18 687

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

Climate

Mean T°

12,9°C

Annual rain

794mm

Warmest m°

23,7°C

Coldest m°

3,8°C

Elevation: 15 m on average (min 3 m, max 28 m)

Bioclimatic detailsExpert
Annual mean temp.
12,9°C
Annual rain
794mm
Warmest month
23,7°C
Coldest month
3,8°C
Mean alt.
15m
Min
3m
Max
28m
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

7,3

Org. C

37,8g/kg

Clay

36,9%

Sand

16,6%

Silt

46,4%

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
62,1g/kg
Clay
36,8%
Sand
16,4%
Silt
46,8%
5–15 cm
pH H₂O
7,3
Org. C
27,2g/kg
Clay
37,2%
Sand
15,5%
Silt
47,3%
15–30 cm
pH H₂O
7,4
Org. C
24,3g/kg
Clay
36,8%
Sand
18,0%
Silt
45,2%

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

Land cover

Forest2.9%
Crops64.7%
Built-up3.3%
Bare soil0.8%
Other (grassland, water…)28.3%

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

Hydrology2 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

1,9km

Basins crossed

2

Max stream order

1

Max drainage

457km²

Discharge in basins

0,2m³/s

Mean precip.

776mm/an

Mean T°

12,5°C

Moisture idx

-0,07

Max snow

4%

Mean runoff

523mm/an

Mean elev. (basins)

18m

Watersheds crossing here

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

Human pressure

Pop. density

2hab/km²

Night light

0,2nW

Built-up

329,4%

Pesticides

41,4kg/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) · 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.