Ontologia

Rivière· 14 segments

山田川

Crosses 5 administrative regions : Goshogawara, Hirosaki, Nakadomari, Tsugaru, Tsuruta

rivière

Total length

617km

Max discharge

82m³/s

Max Strahler

5

Segments matched

14

River geography5 admin regions · 0 communes

Parent watershed

hybas-40800436502437 km²

5 administrative regions crossed (GADM L2)

4 intersecting protected areas

  • Tsugaru

    IUCN V

    Quasi National Park

  • Jusanko

    IUCN IV

    Prefectural Wildlife Protection Area

  • Iwakigawa kakou

    IUCN IV

    Prefectural Wildlife Protection Area

  • Tappinuma

    IUCN IV

    Prefectural Wildlife Protection Area

1 page = 1 named river (aggregation of 14 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

69 distinct species · 139 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 21 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 山田川 : 17 espèces reliées par 25 interactions GloBI sur 3 types (connectance 10.8%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
25
Connectance
0.108
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

617km

Max discharge

82,0m³/s

Max Strahler

5

Segments matched

14

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