Ruisseau
西一号川
Crosses 1 administrative regions : Wakkanai
Total length
10km
Max discharge
0,1m³/s
Max Strahler
1
Segments matched
1
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- WakkanaiHokkaido · Japan0.5 kmin this dpt
2 intersecting protected areas
Koetoi onuma
IUCN IVPrefectural Wildlife Protection Area
Oonuma
IUCN VNatural Landscape Protection Area(Hokkaido)
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
66 distinct species · 285 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 西一号川 : 19 espèces reliées par 35 interactions GloBI sur 3 types (connectance 15.2%, filtre Serrano α=0.2). 3 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
10km
Max discharge
0,1m³/s
Max Strahler
1
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.