Ontologia

Ruisseau· 3 segments

都幾川

Crosses 8 administrative regions : Higashimatsuyama, Kawajima, Namegawa, Ogawa, Ranzan +3

ruisseau

Total length

31km

Max discharge

3m³/s

Max Strahler

3

Segments matched

3

River geography8 admin regions · 0 communes

Parent watershed

hybas-4080583010443 km²

8 administrative regions crossed (GADM L2)

  • Higashimatsuyama
    Saitama · Japan
    11.5 km
    in this dpt
  • Tokigawa
    Saitama · Japan
    5.3 km
    in this dpt
  • Ranzan
    Saitama · Japan
    2.0 km
    in this dpt
  • Kawajima
    Saitama · Japan
    0.9 km
    in this dpt
  • Ogawa
    Saitama · Japan
    0.0 km
    in this dpt
  • Namegawa
    Saitama · Japan
    0.0 km
    in this dpt
  • Sakado
    Saitama · Japan
    0.0 km
    in this dpt
  • Yoshimi
    Saitama · Japan
    0.0 km
    in this dpt

4 intersecting protected areas

1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

548 distinct species · 2 057 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 31 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 都幾川 : 22 espèces reliées par 68 interactions GloBI sur 2 types (connectance 12.1%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
68
Connectance
0.121
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

31km

Max discharge

3,0m³/s

Max Strahler

3

Segments matched

3

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