Marais Poitevin
IUCN VRegional Nature Park · 2014
1 986 km²
Commune · FRA
France
Species observed
836
Observations
64 852
Area
19,5km²
Sample of 41 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).
Tissu écologique de Saint-Sauveur-d'Aunis : 30 espèces reliées par 126 interactions GloBI sur 6 types (connectance 14.0%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
836 distinct species · 64 852 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
12,8°C
Annual rain
801mm
Warmest m°
24,5°C
Coldest m°
3,2°C
Elevation: 13 m on average (min 4 m, max 23 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
7,2
Org. C
34,5g/kg
Clay
38,7%
Sand
13,8%
Silt
47,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Charente-Maritime
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
7,6km
Basins crossed
2
Max stream order
3
Max drainage
2 455km²
Discharge in basins
0,3m³/s
Mean precip.
775mm/an
Mean T°
12,5°C
Moisture idx
-0,07
Max snow
4%
Mean runoff
524mm/an
Mean elev. (basins)
19m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
1hab/km²
Night light
0,5nW
Built-up
146,4%
Pesticides
41,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Regional Nature Park · 2014
1 986 km²
Wetland of International Importance (Ramsar Site) · 2023
690 km²
Special Protection Area (Birds Directive) · 2019
682 km²
Special Areas of Conservation (Habitats Directive) · 2007
203 km²
Biotope Protection Order · 2021
6 km²
Natural habitats protection Order · 2021
6 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.