Ruisseau· 9 segments
La Boulogne
Crosses 2 administrative regions : Loire-Atlantique, Vendée
Total length
99km
Max discharge
9,2m³/s
Max Strahler
3
Segments matched
9
River geography2 admin regions · 16 communes
2 administrative regions crossed (GADM L2)
- VendéePays de la Loire · France48.5 kmin this dpt
- Loire-AtlantiquePays de la Loire · France13.1 kmin this dpt
16 communes (L5)For countries with L5
- Les Lucs-sur-Boulogne11.61 km
- Saint-Philbert-de-Grand-Lieu11.46 km
- Rocheservière10.47 km
- Saint-Denis-la-Chevasse10.09 km
- La Merlatière4.32 km
- Boulogne3.49 km
- Saint-Philbert-de-Bouaine3.31 km
- Les Essarts2.13 km
- Corcoué-sur-Logne1.66 km
- Mormaison1.08 km
- Chauché0.70 km
- Dompierre-sur-Yon0.61 km
- Saint-Martin-des-Noyers0.41 km
- Saligny0.25 km
- Saint-Colomban0.00 km
- Legé0.00 km
6 intersecting protected areas
Lac de Grand-Lieu
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Lac de Grand-Lieu
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Lac de Grand Lieu
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Lac de grand lieu
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
Lac De Grand-Lieu
IUCN IVNational Nature Reserve
Lac De Grand-Lieu
IUCN IVRegional Nature Reserve
1 page = 1 named river (aggregation of 9 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
192 distinct species · 1 714 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 La Boulogne : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 4 bulles famille, 78 interactions GloBI documentées sur 2 types (connectance 15.7%, filtre Serrano α=0.2). Les 4 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).
Hydrology (HydroRIVERS v10)
Total length
99km
Max discharge
9,2m³/s
Max Strahler
3
Segments matched
9
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.