Ontologia

Rivière· 2 segments

土佐川

Crosses 2 administrative regions : Nikkō, Shioya

rivière

Total length

12km

Max discharge

25,7m³/s

Max Strahler

4

Segments matched

2

River geography2 admin regions · 0 communes

Parent watershed

hybas-4080574090301 km²

2 administrative regions crossed (GADM L2)

  • Shioya
    Tochigi · Japan
    7.4 km
    in this dpt
  • Nikkō
    Tochigi · Japan
    0.2 km
    in this dpt

5 intersecting protected areas

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

210 distinct species · 379 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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 土佐川 : 26 espèces reliées par 67 interactions GloBI sur 5 types (connectance 9.5%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
67
Connectance
0.095
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

12km

Max discharge

25,7m³/s

Max Strahler

4

Segments matched

2

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