Ontologia

Rivière· 12 segments

山田川

Crosses 3 administrative regions : Hida, Nanto, Toyama

rivière

Total length

617km

Max discharge

19,1m³/s

Max Strahler

4

Segments matched

12

River geography3 admin regions · 0 communes

Parent watershed

hybas-4080560220416 km²

3 administrative regions crossed (GADM L2)

  • Toyama
    Toyama · Japan
    22.6 km
    in this dpt
  • Hida
    Gifu · Japan
    13.2 km
    in this dpt
  • Nanto
    Toyama · Japan
    10.5 km
    in this dpt

6 intersecting protected areas

1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

168 distinct species · 240 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 14 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de 山田川 : 13 espèces reliées par 10 interactions GloBI sur 4 types (connectance 11.0%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
14
Interactions affichées
10
Connectance
0.110
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

617km

Max discharge

19,1m³/s

Max Strahler

4

Segments matched

12

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.