Wetland of International Importance (Ramsar Site) · fra
Marais Breton, Baie de Bourgneuf, Ile de Noirmoutier et Forêt de Monts
- Area
- 558 km²
- IUCN cat.
- IV
- Year
- 2017
Overview
- Designation
- Wetland of International Importance (Ramsar Site)
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
- Established
- 2017
- Managing authority
- Full information available from the Ramsar Sites Information Service (RSIS) website - https://rsis.ramsar.org/ris/2283
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
5 460 distinct species · 287 262 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Breton, Baie de Bourgneuf, Ile de Noirmoutier et Forêt de Monts : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 5 bulles famille, 66 interactions GloBI documentées sur 3 types (connectance 8.5%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology2 basins · 2 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
100,4km
Lake surface here
0,30km²
Basins crossed
2
Max stream order
3
Max drainage
1 307km²
Discharge in basins
1,0m³/s
Mean precip.
832mm/an
Mean T°
11,9°C
Moisture idx
0,04
Max snow
5%
Mean runoff
539mm/an
Mean elev. (basins)
15m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (12, ord ≥ 4)
- La Tailléeord 2len here25.37 km85%total30 km
- Le Falleronord 2len here14.14 km29%total48 km
- Le Dainord 2len here11.48 km96%total12 km
- Étier de la Gravelleord 2len here9.83 km76%total13 km
- Ruisseau de la Garnacheord 2len here9.67 km47%total20 km
- Le Bignonord 1len here8.29 km83%total10 km
- La Vieord 3len here7.53 km15%total51 km
- Ruisseau des Godinièresord 1len here5.32 km45%total12 km
- Le Ligneronord 2len here4.77 km20%total24 km
- Le Taizanord 1len here1.75 km11%total16 km
- Etier de la Salleord 1len here1.74 km62%total3 km
- Le Grand Étier de Sallertaineord 3len here0.54 km96%total1 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
- 46.90291, -2.09218
- 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.