Ruisseau
Étier du Foy
Crosses 2 administrative regions : Loire-Atlantique, Morbihan
Total length
7km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
1
River geography2 admin regions · 3 communes
2 administrative regions crossed (GADM L2)
- Loire-AtlantiquePays de la Loire · France2.8 kmin this dpt
- MorbihanBretagne · France0.2 kmin this dpt
10 intersecting protected areas
Brière
IUCN VRegional Nature Park
Baie de Vilaine
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Marais salants de Guérande et du Més
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Estuaire de la Vilaine
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Marais de penestin
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
Étang Du Pont De Fer
IUCN IVRegional Nature Reserve
Etang du pont de fer
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1 more protected areassorted by area
Etang du pont de fer
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
1 107 distinct species · 4 425 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 Étier du Foy : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 6 types (connectance 10.4%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
7km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.