Rivière· 2 segments
山王川
Crosses 1 administrative regions : Minamiuonuma
Total length
68km
Max discharge
13,5m³/s
Max Strahler
4
Segments matched
2
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- MinamiuonumaNiigata · Japan3.1 kmin this dpt
2 intersecting protected areas
Sakatoyama
IUCN IVPrefectural Wildlife Protection Area
Untoan
IUCN IVPrefectural Wildlife Protection Area
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
117 distinct species · 184 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 山王川 : 13 espèces reliées par 10 interactions GloBI sur 2 types (connectance 11.0%, 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
68km
Max discharge
13,5m³/s
Max Strahler
4
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.