Ruisseau· 2 segments
真駒内川
Crosses 2 administrative regions : Eniwa, Sapporo
Total length
47km
Max discharge
1,1m³/s
Max Strahler
2
Segments matched
2
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
8 intersecting protected areas
Shikotsu toya
IUCN IINational Park
Makomanai midorigaoka
IUCN IVPrefectural Wildlife Protection Area
Hattaribetsu
IUCN VSpecial green space conservation districts
Kashiwagaoka daini
IUCN VSpecial green space conservation districts
Kashiwagaoka
IUCN VSpecial green space conservation districts
Kashiwagaoka
IUCN VEnvironmental Green Space Protection Area(Hokkaido)
Makomanai kashiwaoka
IUCN VSpecial green space conservation districts
Tokiwa
IUCN VSpecial green space conservation districts
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
183 distinct species · 337 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 真駒内川 : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 45 interactions GloBI sur 5 types (connectance 8.0%, filtre Serrano α=0.2). 9 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
47km
Max discharge
1,1m³/s
Max Strahler
2
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.