Ontologia

Ruisseau· 11 segments

黒川

Crosses 4 administrative regions : Nasu, Nasushiobara, Nishigou, Shirakawa

ruisseau

Total length

445km

Max discharge

4,9m³/s

Max Strahler

3

Segments matched

11

River geography4 admin regions · 0 communes

Parent watershed

hybas-4080553040314 km²

4 administrative regions crossed (GADM L2)

  • Nasu
    Tochigi · Japan
    34.6 km
    in this dpt
  • Nishigou
    Fukushima · Japan
    13.2 km
    in this dpt
  • Shirakawa
    Fukushima · Japan
    1.8 km
    in this dpt
  • Nasushiobara
    Tochigi · Japan
    0.0 km
    in this dpt

8 intersecting protected areas

1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

135 distinct species · 247 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 22 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 : 20 espèces reliées par 35 interactions GloBI sur 3 types (connectance 11.7%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
35
Connectance
0.117
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

4,9m³/s

Max Strahler

3

Segments matched

11

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