Ruisseau· 7 segments
大沢川
Crosses 7 administrative regions : Fujimi, Kuni, Kusatsu, Maebashi, Takasaki +2
Total length
473km
Max discharge
0,8m³/s
Max Strahler
2
Segments matched
7
River geography7 admin regions · 0 communes
7 administrative regions crossed (GADM L2)
7 intersecting protected areas
Joshinetsukogen
IUCN IINational Park
Asama
IUCN IVNational Wildlife Protection Area
Shiga Highland
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Kusatsu
IUCN IVPrefectural Wildlife Protection Area
Misato
IUCN IVPrefectural Wildlife Protection Area
Yoshigadaira Wetlands
IUCN IIWetland of International Importance (Ramsar Site)
National Natural Monument
1 page = 1 named river (aggregation of 7 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
119 distinct species · 191 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 大沢川 : 24 espèces reliées par 34 interactions GloBI sur 5 types (connectance 7.3%, filtre Serrano α=0.2). 7 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
473km
Max discharge
0,8m³/s
Max Strahler
2
Segments matched
7
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.