Ontologia

Ruisseau· 2 segments

大津川

Crosses 4 administrative regions : Abiko, Kamagaya, Kashiwa, Matsudo

ruisseau

Total length

35km

Max discharge

0,8m³/s

Max Strahler

2

Segments matched

2

River geography4 admin regions · 0 communes

Parent watershed

hybas-40805877801458 km²

4 administrative regions crossed (GADM L2)

  • Kashiwa
    Chiba · Japan
    6.9 km
    in this dpt
  • Matsudo
    Chiba · Japan
    2.6 km
    in this dpt
  • Abiko
    Chiba · Japan
    0.3 km
    in this dpt
  • Kamagaya
    Chiba · Japan
    0.0 km
    in this dpt

4 intersecting protected areas

  • Inba tega

    IUCN V

    Prefectural Natural Park

  • Teganuma

    IUCN IV

    Prefectural Wildlife Protection Area

  • Funato

    IUCN V

    Special green space conservation districts

  • Takayanagi

    IUCN V

    Special green space conservation districts

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

525 distinct species · 8 593 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 大津川 : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 71 interactions GloBI sur 3 types (connectance 12.7%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
71
Connectance
0.127
Patrimoniales
2
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

35km

Max discharge

0,8m³/s

Max Strahler

2

Segments matched

2

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