Wetland of International Importance (Ramsar Site) · FRA
Marais poitevin
- Area
- 690 km²
- IUCN cat.
- III
- Year
- 2023
Overview
- Designation
- Wetland of International Importance (Ramsar Site)
- IUCN category
- III · Monument naturel
Caractéristique naturelle spécifique protégée
- Established
- 2023
- Managing authority
- Le Syndicat mixte du Parc naturel régional du Marais poitevin
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
7 551 distinct species · 1 034 816 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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).
Indicateurs du tissu écologique
Tissu écologique de Marais poitevin : 26 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 47 interactions GloBI sur 2 types (connectance 10.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology15 basins · 2 lakes · 86 rivers
Hydrology metrics for this exact territory
Stream length here
354,6km
Lake surface here
0,50km²
Basins crossed
15
Max stream order
4
Max drainage
3 420km²
Discharge in basins
49,7m³/s
Mean precip.
774mm/an
Mean T°
12,2°C
Moisture idx
-0,07
Max snow
9%
Mean runoff
521mm/an
Mean elev. (basins)
31m
Watersheds crossing here
- Bassin de Chenal Vieuxsub-area236,3 km²overlap117.48 km²17%
- Bassin de la Sèvre Niortaisesub-area370,2 km²overlap116.59 km²17%
- Bassin du Laysub-area1 998,9 km²overlap108.27 km²16%
- Bassin du Mignonsub-area495,1 km²overlap51.11 km²7%
- Bassin de Fossé Centralsub-area134,3 km²overlap50.94 km²7%
- Bassin du Curésub-area457,4 km²overlap39.15 km²6%
- Bassin de l'Autisesub-area422,7 km²overlap32.04 km²5%
- Bassin de la Rigole d'Azirésub-area73,4 km²overlap28.16 km²4%
- Bassin du Jaunaysub-area893 km²overlap21.82 km²3%
6 more basinssorted by overlap
- Bassin de la Vendéesub-area594,8 km²overlap19.43 km²3%
- Bassin de Fossé du Bois Billaudsub-area172,5 km²overlap19.40 km²3%
- Bassin de la Sèvre Niortaisesub-area982,9 km²overlap9.41 km²1%
- Bassin de la Guirandesub-area174 km²overlap8.51 km²1%
- Bassin de Canal de la Moulinettesub-area450,4 km²overlap5.36 km²1%
- Basin #20780sub-area3,5 km²overlap3.05 km²0%
Lakes (2, top by area)
Rivers / streams (86, ord ≥ 4)
- Le Layord 4len here30.18 km45%total67 km
- La Sèvre Niortaiseord 4len here19.88 km16%total126 km
- Chenal Vieuxord 2len here15.48 km78%total20 km
- La Rigole d'Aziréord 1len here12.89 km98%total13 km
- Le Mignonord 3len here12.69 km49%total26 km
- Ruisseau de Chantegrosord 3len here12.52 km62%total20 km
- Le Curéord 3len here12.36 km36%total34 km
- Le Troussepoilord 2len here9.12 km48%total19 km
- Canal de la Vergneord 2len here9.02 km75%total12 km
- Canal des Bochesord 4len here8.39 km97%total9 km
- Le Vieux Mignonord 3len here8.28 km89%total9 km
- Canal du Grand Portord 3len here7.47 km83%total9 km
74 more river segmentssorted by Strahler order + length
- La Ceinture Fosséord 4len here7.31 km100%total7 km
- Ceinture du Commandeurord 2len here7.24 km55%total13 km
- La Couranceord 2len here7.08 km32%total22 km
- Ceinture de la Levée du Bois Dieuord 3len here6.54 km99%total7 km
- Canal de la Duneord 2len here6.50 km92%total7 km
- Le Bieford 2len here6.41 km52%total12 km
- La Vielle Autiseord 3len here6.33 km87%total7 km
- Canal du Mignonord 3len here5.87 km100%total6 km
- La Vieille Sèvre dite Bras de Sevreauord 2len here5.78 km96%total6 km
- Canal du Chailord 1len here5.53 km100%total6 km
- La Vendéeord 3len here5.38 km8%total67 km
- Canal du Petit Maraisord 2len here5.23 km100%total5 km
- Canal des Hollandaisord 2len here5.12 km79%total6 km
- Bot Bourdinord 1len here4.98 km100%total5 km
- Le Graonord 2len here4.97 km33%total15 km
- Canal de la Repentieord 4len here4.95 km54%total9 km
- Ceinture des Fenêtres Rougesord 1len here4.69 km100%total5 km
- Conche de la Bequetterieord 4len here4.50 km100%total4 km
- La Guirandeord 2len here3.90 km14%total28 km
- Le Vivierord 2len here3.86 km100%total4 km
- Ceinture de la Levée Neuveord 1len here3.78 km80%total5 km
- Fossé de la Dispartieord 2len here3.46 km93%total4 km
- Canal du Milieuord 4len here3.46 km100%total3 km
- Canal de la Boissièreord 2len here3.36 km59%total6 km
- La Douveord 1len here3.22 km75%total4 km
- Canal de la Brieord 3len here3.20 km49%total7 km
- Canal de Gravansord 1len here2.99 km47%total6 km
- Canal de la Chevrotièreord 2len here2.80 km94%total3 km
- Canal de la Chaudièreord 3len here2.80 km100%total3 km
- Canal de Ceinture du Marais de Boëreord 4len here2.73 km74%total4 km
- Canal de Pomèreord 4len here2.60 km83%total3 km
- Canal Anticharord 2len here2.58 km41%total6 km
- L'Yonord 3len here2.57 km6%total40 km
- Bief de Glandeord 4len here2.42 km70%total3 km
- Fossé Centralord 1len here2.41 km25%total10 km
- La Charreord 1len here2.29 km51%total4 km
- Petit Canal d'Andillyord 1len here2.23 km100%total2 km
- Canal Ratéord 2len here2.13 km64%total3 km
- Canal de Bois Vilainord 1len here2.10 km28%total7 km
- Le Fossé Noirord 1len here1.94 km38%total5 km
- Le Nantoletord 1len here1.91 km40%total5 km
- Canal du Grand Coinord 4len here1.85 km100%total2 km
- Canal de Vixord 3len here1.84 km18%total10 km
- La Longèvesord 2len here1.74 km14%total12 km
- Canal du Sablonord 4len here1.73 km63%total3 km
- Canal du Curéord 3len here1.71 km61%total3 km
- Fossé du Corps de Gardeord 4len here1.69 km100%total2 km
- Canal de Ceintureord 1len here1.63 km100%total2 km
- La Subiteord 3len here1.56 km29%total5 km
- Ruisseau des Fontainesord 1len here1.46 km28%total5 km
- Bief du Roseauord 1len here1.41 km32%total4 km
- Canal des Hollandaisord 1len here1.26 km100%total1 km
- Fossé de Bazoinord 4len here1.13 km100%total1 km
- La Cordeord 2len here0.81 km11%total7 km
- Canal des Trois Fossésord 1len here0.80 km35%total2 km
- Canal de l'Angle Giraudord 1len here0.70 km11%total6 km
- Les Alleudsord 2len here0.70 km4%total16 km
- Le Contre-Botord 2len here0.68 km30%total2 km
- Canal de la Baronneord 3len here0.66 km37%total2 km
- Bief d'Ambreuilord 4len here0.64 km100%total1 km
- Le Romagnéord 1len here0.56 km13%total4 km
- Le Vendiéord 1len here0.50 km9%total6 km
- Bief Chabotord 1len here0.35 km51%total1 km
- Le Virsonord 2len here0.32 km2%total15 km
- Le Traquenardord 2len here0.32 km6%total6 km
- Fossé du Bois Billaudord 1len here0.28 km4%total8 km
- Canal de Marans à La Rochelleord 1len here0.22 km3%total7 km
- L'Autiseord 3len here0.14 km1%total26 km
- L'Acheneauord 3len here0.13 km5%total3 km
- Bief Communal de Bourneauord 3len here0.09 km8%total1 km
- Chenal de la Raqueord 1len here0.09 km2%total4 km
- Canal de Ladressoirord 1len here0.06 km1%total6 km
- Petit Canal de Vixord 1len here0.06 km2%total4 km
- Canal des Cinq Abbésord 1len here0.04 km1%total5 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 46.33875, -1.41189
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.