Ontologia

Ruisseau· 4 segments

黒川

Crosses 6 administrative regions : Iida, Ina, Komagane, Miyada, Seinaiji +1

ruisseau

Total length

445km

Max discharge

1,2m³/s

Max Strahler

2

Segments matched

4

River geography6 admin regions · 0 communes

Parent watershed

hybas-40806055901756 km²

6 administrative regions crossed (GADM L2)

  • Iida
    Nagano · Japan
    8.9 km
    in this dpt
  • Miyada
    Nagano · Japan
    4.1 km
    in this dpt
  • Seinaiji
    Nagano · Japan
    3.0 km
    in this dpt
  • Ōshika
    Nagano · Japan
    2.7 km
    in this dpt
  • Ina
    Nagano · Japan
    2.2 km
    in this dpt
  • Komagane
    Nagano · Japan
    1.0 km
    in this dpt

5 intersecting protected areas

1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

257 distinct species · 397 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 11 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 黒川 : 11 espèces reliées par 7 interactions GloBI sur 1 type (connectance 12.7%, filtre Serrano α=0.2).

Espèces affichées
11
Interactions affichées
7
Connectance
0.127
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

445km

Max discharge

1,2m³/s

Max Strahler

2

Segments matched

4

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