Ruisseau· 5 segments
La Roanne
Crosses 1 administrative regions : Drôme
Total length
65km
Max discharge
2,6m³/s
Max Strahler
3
Segments matched
5
River geography1 admin regions · 12 communes
1 administrative regions crossed (GADM L2)
- DrômeAuvergne-Rhône-Alpes · France17.5 kmin this dpt
12 communes (L5)For countries with L5
- Aurel5.59 km
- Saint-Benoit-en-Diois4.67 km
- Saint-Nazaire-le-Désert1.99 km
- Gumiane1.75 km
- Pradelle1.36 km
- Pennes-le-Sec0.68 km
- Aucelon0.53 km
- Rimon-et-Savel0.42 km
- Chalancon0.29 km
- Espenel0.25 km
- Vercheny0.00 km
- Arnayon0.00 km
2 intersecting protected areas
Baronnies Provençales
IUCN VRegional Nature Park
Natural habitats protection Order
1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 594 distinct species · 23 398 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 9 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 Roanne : 8 espèces + 1 bulle famille, 11 interactions GloBI documentées sur 3 types (connectance 30.6%, filtre Serrano α=0.2). Les 1 bulle regroupe 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
65km
Max discharge
2,6m³/s
Max Strahler
3
Segments matched
5
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.