Rivière· 21 segments
平川
Crosses 5 administrative regions : Fujisaki, Hirakawa, Hirosaki, Inakadate, Ōwani
Total length
72km
Max discharge
25,5m³/s
Max Strahler
4
Segments matched
21
River geography5 admin regions · 0 communes
5 administrative regions crossed (GADM L2)
4 intersecting protected areas
Shirakami Hakkoda
IUCN VGreen Corridor
Prefectural Natural Park
Ajara
IUCN IVPrefectural Wildlife Protection Area
Hirakawa-aseishigawa
IUCN IVPrefectural Wildlife Protection Area
1 page = 1 named river (aggregation of 21 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
155 distinct species · 412 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 平川 : 21 espèces reliées par 41 interactions GloBI sur 4 types (connectance 8.3%, filtre Serrano α=0.2). 11 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
72km
Max discharge
25,5m³/s
Max Strahler
4
Segments matched
21
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.