Ontologia

Ruisseau

岩川

Crosses 3 administrative regions : Nakagawa, Nasukarasuyama, Sakura

ruisseau

Total length

18km

Max discharge

0,4m³/s

Max Strahler

1

Segments matched

1

River geography3 admin regions · 0 communes

Parent watershed

hybas-4080562320369 km²

3 administrative regions crossed (GADM L2)

  • Nasukarasuyama
    Tochigi · Japan
    7.0 km
    in this dpt
  • Nakagawa
    Tochigi · Japan
    0.0 km
    in this dpt
  • Sakura
    Tochigi · Japan
    0.0 km
    in this dpt

3 intersecting protected areas

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

Species present

74 distinct species · 183 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 18 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 岩川 : 16 espèces reliées par 17 interactions GloBI sur 2 types (connectance 11.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
17
Connectance
0.111
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

18km

Max discharge

0,4m³/s

Max Strahler

1

Segments matched

1

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