Ruisseau
Bras de La Bièvre
Crosses 1 administrative regions : Yvelines
Total length
1km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
1
River geography1 admin regions · 10 communes
1 administrative regions crossed (GADM L2)
- YvelinesÎle-de-France · France13.2 kmin this dpt
10 communes (L5)For countries with L5
- Guyancourt5.83 km
- Buc3.04 km
- Montigny-le-Bretonneux2.59 km
- Jouy-en-Josas1.15 km
- Les Loges-en-Josas0.64 km
- Trappes0.00 km
- Bois-d'Arcy0.00 km
- Voisins-le-Bretonneux0.00 km
- Saint-Cyr-l'École0.00 km
- Versailles0.00 km
2 intersecting protected areas
Etangs et rigoles d’Yveline
IUCN IVNational Nature Reserve
Etang de Saint Quentin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
2 408 distinct species · 87 967 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Bras de La Bièvre : 27 espèces reliées par 111 interactions GloBI sur 6 types (connectance 15.8%, filtre Serrano α=0.2). 11 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
1km
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.