Ontologia

HydroBASINS lev08 watershed · #4080553850

Bassin de 鬼怒川

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 4 administrative regions : Hinoemata, Katashina, Minamiaizu, Nikkō

11% lakePfafstetter: 41301649

Sub-basin area

318,9km²

Upstream area

318,9km²

Discharge

7,97m³/s

Mean elev.

1 338m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 小百川192 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

13 intersecting protected areas

  • Nikko

    IUCN V

    National Park

    262.50 km² overlap

  • Nikko and Azuma Mountains

    IUCN V

    Green Corridor

    219.04 km² overlap

  • Okukinu

    IUCN IV

    Biocenosis Protected Forest

    24.38 km² overlap

  • Nikko Line

    IUCN V

    Green Corridor

    16.81 km² overlap

  • Oze

    IUCN II

    National Park

    14.36 km² overlap

  • Okukinu

    IUCN IV

    Prefectural Wildlife Protection Area

    10.92 km² overlap

  • Okuaizu

    IUCN Ib

    Forest Ecosystem Reserve

    2.11 km² overlap

  • Nikko

    IUCN IV

    Prefectural Wildlife Protection Area

    0.73 km² overlap

  • Karasawa Kometsuga

    IUCN IV

    Rare Population Protected Forest

    0.53 km² overlap

4 more protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 487 distinct species · 4 591 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 591 obs · 11 cellules
Obs. / cellule
≥ 881
720–880
615–719
384–614
< 384

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 34 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 Bassin de 鬼怒川 : 27 espèces reliées par 31 interactions GloBI sur 3 types (connectance 5.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
31
Connectance
0.055
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

6,1°C

Annual rain

2 118mm

Moisture idx (CMI)

0,64

Runoff

804mm/an

PET

756mm

AET

756mm

Mean slope

20,5°

Water table

621cm

Forest

71%

Crops

20%

Urban

0%

Protected

87%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)