Ontologia

Ruisseau· 5 segments

秋山川

Crosses 3 administrative regions : Sagamihara, Uenohara, Ōtsuki

ruisseau

Total length

85km

Max discharge

1,7m³/s

Max Strahler

2

Segments matched

5

River geography3 admin regions · 0 communes

Parent watershed

hybas-40800449301660 km²

3 administrative regions crossed (GADM L2)

  • Uenohara
    Yamanashi · Japan
    9.6 km
    in this dpt
  • Sagamihara
    Kanagawa · Japan
    5.4 km
    in this dpt
  • Ōtsuki
    Yamanashi · Japan
    0.0 km
    in this dpt

7 intersecting protected areas

  • Jinba sagami ko

    IUCN V

    Prefectural Natural Park

  • Tsukui

    IUCN IV

    Prefectural Wildlife Protection Area

  • Nagura

    IUCN IV

    Prefectural Wildlife Protection Area

  • Okumagino

    IUCN V

    Prefectural Nature Conservation Area

  • Nagura

    IUCN V

    Prefectural Nature Conservation Area

  • Fujinokami

    IUCN V

    Prefectural Nature Conservation Area

  • Yoshino

    IUCN V

    Prefectural Nature Conservation Area

1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

258 distinct species · 437 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 29 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 秋山川 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 48 interactions GloBI sur 5 types (connectance 10.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
48
Connectance
0.103
Patrimoniales
1
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

85km

Max discharge

1,7m³/s

Max Strahler

2

Segments matched

5

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