Rivière· 15 segments
長流川
Crosses 2 administrative regions : Date, Sōbetsu
Total length
50km
Max discharge
15,2m³/s
Max Strahler
4
Segments matched
15
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
6 intersecting protected areas
Common fishery right area
Funka wan
IUCN VICoastline Marine Resource Development Area, designated sea area
Shikotsu toya
IUCN IINational Park
Toyako
IUCN IVPrefectural Wildlife Protection Area
Nagawa
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
Shimeien
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
1 page = 1 named river (aggregation of 15 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
45 distinct species · 48 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 8 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 長流川 : 8 espèces reliées par 5 interactions GloBI sur 2 types (connectance 17.9%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
50km
Max discharge
15,2m³/s
Max Strahler
4
Segments matched
15
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.