Marais Poitevin
IUCN VRegional Nature Park · 2014
1 986 km²
Commune · FRA
Le Vanneau-Irleau
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 809
Observations
42 727
Area
14,6km²
Ecological tissue
Sample of 45 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 Le Vanneau-Irleau : 34 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 6 types (connectance 10.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
45
Interactions affichées
107
Connectance
0.108
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
1 809 distinct species · 42 727 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,7°C
Annual rain
838mm
Warmest m°
24,8°C
Coldest m°
2,9°C
Elevation: 7 m on average (min 3 m, max 18 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,7°C
Annual rain
838mm
Warmest month
24,8°C
Coldest month
2,9°C
Mean alt.
7m
Min
3m
Max
18m
Std. dev.
4m
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
6,8
Org. C
45,2g/kg
Clay
34,8%
Sand
18,0%
Silt
47,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Deux-Sèvres
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,7
Org. C
72,7g/kg
Clay
33,5%
Sand
17,9%
Silt
48,7%
5–15 cm
pH H₂O
6,8
Org. C
36,6g/kg
Clay
35,5%
Sand
16,9%
Silt
47,6%
15–30 cm
pH H₂O
6,8
Org. C
26,2g/kg
Clay
35,5%
Sand
19,3%
Silt
45,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest24.7%
Crops43.7%
Built-up1.0%
Bare soil0.6%
Other (grassland, water…)30.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
6,3km
Basins crossed
1
Max stream order
1
Max drainage
1 291km²
Discharge in basins
2,5m³/s
Mean precip.
777mm/an
Mean T°
12,3°C
Moisture idx
-0,10
Max snow
3%
Mean runoff
520mm/an
Mean elev. (basins)
13m
Watersheds crossing here
Rivers / streams (2, 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
97,6%
Pesticides
42,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas9
IUCN IV · 4IUCN Not Reported · 3IUCN V · 1IUCN III · 1🌊 Marine · 5
Marais poitevin
IUCN IIIWetland of International Importance (Ramsar Site) · 2023
690 km²
Marais poitevin
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
682 km²
Marais Poitevin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2014
479 km²
Marais Poitevin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2007
203 km²
Venise Verte
IUCN IVBiotope Protection Order · 1992
26 km²
Complete list9 protected areas
- Marais PoitevinRegional Nature ParkIUCN V20141 986 km²
- Marais poitevinWetland of International Importance (Ramsar Site)IUCN III2023690 km²
- Marais poitevinSpecial Protection Area (Birds Directive)IUCN Not Reported2019682 km²
- Marais PoitevinSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2014479 km²
- Marais PoitevinSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2007203 km²
- Venise VerteBiotope Protection OrderIUCN IV199226 km²
- marais de la garetteLand acquired by a regional conservatory of natural areasIUCN IV20061 km²
- marais de saint-georges de rex - amureLand acquired by a regional conservatory of natural areasIUCN IV19841 km²
- marais de vanneau-irleauLand acquired by a regional conservatory of natural areasIUCN IV20160 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.