Rivière· 13 segments
箒川
Crosses 4 administrative regions : Nakagawa, Nasushiobara, Otawara, Yaita
Total length
51km
Max discharge
31,8m³/s
Max Strahler
5
Segments matched
13
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- NasushiobaraTochigi · Japan24.4 kmin this dpt
- OtawaraTochigi · Japan19.7 kmin this dpt
- NakagawaTochigi · Japan5.2 kmin this dpt
- YaitaTochigi · Japan2.8 kmin this dpt
8 intersecting protected areas
Nikko
IUCN VNational Park
Green Corridor
Yamizo
IUCN VPrefectural Natural Park
Shiobara
IUCN IVPrefectural Wildlife Protection Area
Shiobara dam
IUCN IVPrefectural Wildlife Protection Area
Prefectural Wildlife Protection Area
Chikasono
IUCN VPrefectural Nature Conservation Area
Hokigawa
IUCN IVPrefectural Wildlife Protection Area
1 page = 1 named river (aggregation of 13 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
73 distinct species · 86 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 箒川 : 17 espèces reliées par 16 interactions GloBI sur 4 types (connectance 9.4%, filtre Serrano α=0.2). 2 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
51km
Max discharge
31,8m³/s
Max Strahler
5
Segments matched
13
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.