Ruisseau
沼の沢川
Crosses 2 administrative regions : Rishiri, Rishirifuji
Total length
35km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
1
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- RishirifujiHokkaido · Japan5.0 kmin this dpt
- RishiriHokkaido · Japan0.0 kmin this dpt
5 intersecting protected areas
Common fishery right area
Rirei
IUCN VICoastline Marine Resource Development Area, designated sea area
Rishiri rebun sarobetsu
IUCN IINational Park
Rishiri
IUCN IVPrefectural Wildlife Protection Area
Rishirito
IUCN IVBiocenosis Protected Forest
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
342 distinct species · 709 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 沼の沢川 : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 4 types (connectance 7.3%, 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
35km
Max discharge
0,3m³/s
Max Strahler
1
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.