Marais Poitevin
IUCN VRegional Nature Park · 2014
1 986 km²
Subdivision · FRA
Niort-Ouest
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
1 183
Observations
20 549
Area
44,2km²
Ecological tissue
Sample of 39 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 Niort-Ouest : 30 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 6 types (connectance 11.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
39
Interactions affichées
84
Connectance
0.113
Patrimoniales
4
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 183 distinct species · 20 549 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,6°C
Annual rain
860mm
Warmest m°
24,8°C
Coldest m°
2,8°C
Elevation: 15 m on average (min 3 m, max 75 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,6°C
Annual rain
860mm
Warmest month
24,8°C
Coldest month
2,8°C
Mean alt.
15m
Min
3m
Max
75m
Std. dev.
15m
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
7,1
Org. C
39,6g/kg
Clay
31,5%
Sand
20,0%
Silt
48,5%
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
6,9
Org. C
62,0g/kg
Clay
30,4%
Sand
20,1%
Silt
49,5%
5–15 cm
pH H₂O
7,1
Org. C
32,2g/kg
Clay
31,7%
Sand
18,9%
Silt
49,5%
15–30 cm
pH H₂O
7,1
Org. C
24,7g/kg
Clay
32,3%
Sand
21,1%
Silt
46,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest12.9%
Crops55.7%
Built-up1.5%
Bare soil0.7%
Other (grassland, water…)29.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 0 lakes · 8 rivers
Hydrology metrics for this exact territory
Stream length here
16,8km
Basins crossed
3
Max stream order
4
Max drainage
1 291km²
Discharge in basins
3,3m³/s
Mean precip.
796mm/an
Mean T°
12,0°C
Moisture idx
-0,08
Max snow
3%
Mean runoff
496mm/an
Mean elev. (basins)
66m
Watersheds crossing here
Rivers / streams (8, ord ≥ 4)
- Canal de la Repentieord 4len here5.01 km55%total9 km
- Bief de Glandeord 4len here3.48 km100%total3 km
- Fossé Centralord 1len here2.96 km30%total10 km
- Canal du Grand Coinord 4len here1.85 km100%total2 km
- La Sèvre Niortaiseord 4len here1.27 km1%total126 km
- La Vieille Sèvre dite Bras de Sevreauord 2len here1.10 km18%total6 km
- Canal du Chailord 1len here0.84 km15%total6 km
- Bief d'Ambreuilord 4len here0.28 km44%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,2nW
Built-up
150,7%
Pesticides
42,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas9
IUCN Not Reported · 4IUCN IV · 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
Plaine de Niort Nord-Ouest
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2019
171 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
- Plaine de Niort Nord-OuestSpecial Protection Area (Birds Directive)IUCN Not Reported2019171 km²
- Venise VerteBiotope Protection OrderIUCN IV199226 km²
- marais de la garetteLand acquired by a regional conservatory of natural areasIUCN IV20061 km²
- marais de bessines a l\'ouchetteLand acquired by a regional conservatory of natural areasIUCN IV19700 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations1
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.