Ruisseau· 3 segments
亀田川
Crosses 3 administrative regions : Hakodate, Hokuto, Nanae
Total length
37km
Max discharge
1,2m³/s
Max Strahler
2
Segments matched
3
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
4 intersecting protected areas
Sasanagare
IUCN VNatural Landscape Protection Area(Hokkaido)
Kamedagawa suigenchi
IUCN IVPrefectural Wildlife Protection Area
Kuroigawa
IUCN IVPrefectural Wildlife Protection Area
Jinkawa
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
118 distinct species · 562 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 亀田川 : 30 espèces reliées par 51 interactions GloBI sur 5 types (connectance 8.1%, filtre Serrano α=0.2). 6 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
37km
Max discharge
1,2m³/s
Max Strahler
2
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.