Rivière· 18 segments
Vellar River
Crosses 3 administrative regions : Ariyalur, Cuddalore, Perambalur
Total length
223km
Max discharge
20,8m³/s
Max Strahler
4
Segments matched
18
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- CuddaloreTamil Nadu · India103.9 kmin this dpt
- AriyalurTamil Nadu · India8.1 kmin this dpt
- PerambalurTamil Nadu · India2.4 kmin this dpt
1 page = 1 named river (aggregation of 18 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
30 distinct species · 50 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 15 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 Vellar River : 14 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 10 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 1 bulle taxonomique (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
223km
Max discharge
20,8m³/s
Max Strahler
4
Segments matched
18
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.