Rivière· 19 segments
山国川
Crosses 4 administrative regions : Kusu, Kōge, Nakatsu, Yoshitomi
Total length
49km
Max discharge
18m³/s
Max Strahler
4
Segments matched
19
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
8 intersecting protected areas
Common fishery right area
Common fishery right area
Yaba-Hita-Hikosan
IUCN VQuasi National Park
Buzenkai
IUCN VICoastline Marine Resource Development Area, designated sea area
Hachiya
IUCN IVPrefectural Wildlife Protection Area
Domonrakanji
IUCN IVPrefectural Wildlife Protection Area
Yabakei dam
IUCN IVPrefectural Wildlife Protection Area
Yamakunigawa
IUCN IVPrefectural Wildlife Protection Area
1 page = 1 named river (aggregation of 19 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
19 distinct species · 43 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 山国川 : 1 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2). 1 bulle taxonomique (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
49km
Max discharge
18,0m³/s
Max Strahler
4
Segments matched
19
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.