Ruisseau· 4 segments
大川
Crosses 4 administrative regions : Kinomoto, Lake Biwa, Nishiazai, Osaka
Total length
421km
Max discharge
5,3m³/s
Max Strahler
3
Segments matched
4
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
7 intersecting protected areas
Biwako
IUCN VQuasi National Park
Biwako
IUCN IVPrefectural Wildlife Protection Area
Biwa-ko
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Yodogawa
IUCN IVPrefectural Wildlife Protection Area
Kutsukake
IUCN IVPrefectural Wildlife Protection Area
Habitat Protection Area(Shiga)
THE FOREST OF YAMAKADO WATER SOURCE
IUCN Not ApplicableOECM
1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
139 distinct species · 226 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 大川 : 33 espèces reliées par 36 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 4 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
421km
Max discharge
5,3m³/s
Max Strahler
3
Segments matched
4
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.