Ontologia

Rivière· 38 segments

吉井川

Crosses 8 administrative regions : Akaiwa, Kagamino, Mimasaka, Misaki, Okayama +3

rivière

Total length

143km

Max discharge

51,6m³/s

Max Strahler

5

Segments matched

38

River geography8 admin regions · 0 communes

Parent watershed

hybas-40800417102229 km²

8 administrative regions crossed (GADM L2)

  • Kagamino
    Okayama · Japan
    39.0 km
    in this dpt
  • Wake
    Okayama · Japan
    18.1 km
    in this dpt
  • Tsuyama
    Okayama · Japan
    15.1 km
    in this dpt
  • Okayama
    Okayama · Japan
    14.3 km
    in this dpt
  • Misaki
    Okayama · Japan
    10.1 km
    in this dpt
  • Akaiwa
    Okayama · Japan
    9.0 km
    in this dpt
  • Setouchi
    Okayama · Japan
    0.9 km
    in this dpt
  • Mimasaka
    Okayama · Japan
    0.0 km
    in this dpt

7 intersecting protected areas

1 page = 1 named river (aggregation of 38 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

226 distinct species · 261 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 吉井川 : 15 espèces reliées par 15 interactions GloBI sur 2 types (connectance 9.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
15
Connectance
0.098
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

143km

Max discharge

51,6m³/s

Max Strahler

5

Segments matched

38

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