Ruisseau· 11 segments
白砂川
Crosses 3 administrative regions : Kuni, Kusatsu, Naganohara
Total length
65km
Max discharge
5,7m³/s
Max Strahler
3
Segments matched
11
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- KuniGunma · Japan22.4 kmin this dpt
- NaganoharaGunma · Japan1.7 kmin this dpt
- KusatsuGunma · Japan0.0 kmin this dpt
1 intersecting protected areas
Joshinetsukogen
IUCN IINational Park
1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
77 distinct species · 104 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 白砂川 : 19 espèces reliées par 27 interactions GloBI sur 6 types (connectance 9.8%, filtre Serrano α=0.2). 5 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
65km
Max discharge
5,7m³/s
Max Strahler
3
Segments matched
11
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.