Ontologia

Ruisseau

小田交沢川

Crosses 3 administrative regions : Chikuhoku, Ikusaka, Omi

ruisseau

Total length

3km

Max discharge

5m³/s

Max Strahler

3

Segments matched

1

River geography3 admin regions · 0 communes

Parent watershed

hybas-4080562440680 km²

3 administrative regions crossed (GADM L2)

  • Chikuhoku
    Nagano · Japan
    2.6 km
    in this dpt
  • Ikusaka
    Nagano · Japan
    0.0 km
    in this dpt
  • Omi
    Nagano · Japan
    0.0 km
    in this dpt

1 intersecting protected areas

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

Species present

545 distinct species · 1 059 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 15 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 小田交沢川 : 15 espèces reliées par 11 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2).

Espèces affichées
15
Interactions affichées
11
Connectance
0.105
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

3km

Max discharge

5,0m³/s

Max Strahler

3

Segments matched

1

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