Ontologia

Ruisseau· 12 segments

黒川

Crosses 6 administrative regions : Ina, Kariwa, Kashiwazaki, Matsumoto, Nagaoka +1

ruisseau

Total length

445km

Max discharge

6,4m³/s

Max Strahler

3

Segments matched

12

River geography6 admin regions · 0 communes

Parent watershed

hybas-4080043170355 km²

6 administrative regions crossed (GADM L2)

  • Nagaoka
    Niigata · Japan
    11.1 km
    in this dpt
  • Shiojiri
    Nagano · Japan
    4.5 km
    in this dpt
  • Matsumoto
    Nagano · Japan
    3.9 km
    in this dpt
  • Kashiwazaki
    Niigata · Japan
    1.8 km
    in this dpt
  • Kariwa
    Niigata · Japan
    0.4 km
    in this dpt
  • Ina
    Nagano · Japan
    0.0 km
    in this dpt

4 intersecting protected areas

1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

288 distinct species · 616 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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 : 28 espèces reliées par 44 interactions GloBI sur 5 types (connectance 6.6%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
44
Connectance
0.066
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

6,4m³/s

Max Strahler

3

Segments matched

12

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