Ruisseau· 5 segments
La Vernaison
Crosses 2 administrative regions : Drôme, Isère
Total length
32km
Max discharge
3m³/s
Max Strahler
3
Segments matched
5
River geography2 admin regions · 11 communes
2 administrative regions crossed (GADM L2)
11 communes (L5)For countries with L5
- Saint-Agnan-en-Vercors14.36 km
- La Chapelle-en-Vercors9.04 km
- Échevis5.46 km
- Châtelus2.11 km
- Pont-en-Royans1.68 km
- Saint-Martin-en-Vercors0.99 km
- Sainte-Eulalie-en-Royans0.21 km
- Auberives-en-Royans0.00 km
- Choranche0.00 km
- Vassieux-en-Vercors0.00 km
- Saint-André-en-Royans0.00 km
7 intersecting protected areas
Vercors
IUCN VRegional Nature Park
Hauts plateaux et contreforts du Vercors oriental
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Hauts Plateaux Du Vercors
IUCN IVNational Nature Reserve
Hauts plateaux du Vercors
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Rebord méridional du Vercors
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
La Bourne
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Vercors
IUCN IaForest Integral Biological Reserve
1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 237 distinct species · 8 683 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 Vernaison : 17 espèces + 3 bulles famille, 45 interactions GloBI documentées sur 2 types (connectance 23.7%, filtre Serrano α=0.2). Les 3 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
32km
Max discharge
3,0m³/s
Max Strahler
3
Segments matched
5
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.