Ontologia

Ruisseau

与良川

Crosses 3 administrative regions : Fujioka, Nogi, Oyama

ruisseau

Total length

12km

Max discharge

4,5m³/s

Max Strahler

3

Segments matched

1

River geography3 admin regions · 0 communes

Parent watershed

hybas-40805775402572 km²

3 administrative regions crossed (GADM L2)

  • Fujioka
    Tochigi · Japan
    3.0 km
    in this dpt
  • Oyama
    Tochigi · Japan
    1.3 km
    in this dpt
  • Nogi
    Tochigi · Japan
    0.0 km
    in this dpt

2 intersecting protected areas

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

Species present

307 distinct species · 1 462 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 40 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 与良川 : 30 espèces reliées par 74 interactions GloBI sur 5 types (connectance 8.2%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
74
Connectance
0.082
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

4,5m³/s

Max Strahler

3

Segments matched

1

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