Ontologia

HydroBASINS lev08 watershed · #4080553860

Bassin de 男鹿川

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 3 administrative regions : Minamiaizu, Nasushiobara, Nikkō

7% lakePfafstetter: 41301648

Sub-basin area

289,2km²

Upstream area

289,3km²

Discharge

7,48m³/s

Mean elev.

997m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 小百川192 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

12 intersecting protected areas

  • Nikko and Azuma Mountains

    IUCN V

    Green Corridor

    157.65 km² overlap

  • Nikko

    IUCN V

    National Park

    116.78 km² overlap

  • Ikari

    IUCN IV

    Prefectural Wildlife Protection Area

    11.36 km² overlap

  • Yunishigawa

    IUCN IV

    Prefectural Wildlife Protection Area

    6.25 km² overlap

  • Yunishi gawa

    IUCN V

    Prefectural Nature Conservation Area

    5.90 km² overlap

  • Okuaizu

    IUCN Ib

    Forest Ecosystem Reserve

    1.11 km² overlap

  • Shiobara

    IUCN IV

    Prefectural Wildlife Protection Area

    0.49 km² overlap

  • Aizu Mountains

    IUCN V

    Green Corridor

    0.21 km² overlap

  • Osabisanchi

    IUCN IV

    Biocenosis Protected Forest

    0.15 km² overlap

3 more protected areas

  • Osabiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.05 km² overlap

  • Takaharayama Iramomi

    IUCN IV

    Rare Population Protected Forest

    0.05 km² overlap

  • Shin michizawa

    IUCN V

    Prefectural Nature Conservation Area

    0.01 km² overlap

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

Species present

513 distinct species · 2 731 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 731 obs · 8 cellules
Obs. / cellule
≥ 668
668–667
506–667
297–505
< 297

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

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 Bassin de 男鹿川 : 16 espèces reliées par 26 interactions GloBI sur 4 types (connectance 11.3%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
26
Connectance
0.113
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°

7,9°C

Annual rain

1 946mm

Moisture idx (CMI)

0,57

Runoff

823mm/an

PET

823mm

AET

823mm

Mean slope

21,1°

Water table

563cm

Forest

91%

Crops

6%

Urban

0%

Protected

43%

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