Ontologia

Rivière· 6 segments

田川

Crosses 6 administrative regions : Kohoku, Lake Biwa, Nagahama, Nishiazai, Takatsuki +1

rivière

Total length

176km

Max discharge

11,5m³/s

Max Strahler

4

Segments matched

6

River geography6 admin regions · 0 communes

Parent watershed

hybas-40806099602540 km²

6 administrative regions crossed (GADM L2)

  • Lake Biwa
    Shiga · Japan
    30.1 km
    in this dpt
  • Nagahama
    Shiga · Japan
    4.8 km
    in this dpt
  • Torahime
    Shiga · Japan
    4.5 km
    in this dpt
  • Kohoku
    Shiga · Japan
    4.3 km
    in this dpt
  • Takatsuki
    Shiga · Japan
    0.4 km
    in this dpt
  • Nishiazai
    Shiga · Japan
    0.0 km
    in this dpt

4 intersecting protected areas

  • Biwako

    IUCN V

    Quasi National Park

  • Biwako

    IUCN IV

    Prefectural Wildlife Protection Area

  • Biwa-ko

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

  • Odaniyama Nishiike

    IUCN IV

    Prefectural Wildlife Protection Area

1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

247 distinct species · 7 188 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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 田川 : 26 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 76 interactions GloBI sur 4 types (connectance 11.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
76
Connectance
0.114
Patrimoniales
3
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

176km

Max discharge

11,5m³/s

Max Strahler

4

Segments matched

6

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