Ontologia

HydroBASINS lev08 watershed · #4080448380

Bassin de 米代川

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 7 administrative regions : Hachimantai, Kazuno, Kitaakita, Ninohe, Semboku +2

Pfafstetter: 41301389

Sub-basin area

662,3km²

Upstream area

662,3km²

Discharge

19,1m³/s

Mean elev.

566m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 犀川292 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

7 dept-equivalent regions (GADM L2)

11 intersecting protected areas

  • Hachimantai

    IUCN IV

    Prefectural Wildlife Protection Area

    34.52 km² overlap

  • Ouu Mountain Range

    IUCN V

    Green Corridor

    32.54 km² overlap

  • Towada hachimantai

    IUCN II

    National Park

    27.84 km² overlap

  • Hachimantai

    IUCN IV

    Biocenosis Protected Forest

    26.00 km² overlap

  • Hachimantaishi yagamidake

    IUCN IV

    Prefectural Wildlife Protection Area

    6.89 km² overlap

  • Niiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    6.62 km² overlap

  • Yoyakejima

    IUCN IV

    Prefectural Wildlife Protection Area

    6.19 km² overlap

  • Higashiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    6.06 km² overlap

  • Hachimantai

    IUCN IV

    Prefectural Wildlife Protection Area

    5.78 km² overlap

2 more protected areas

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

Species present

1 901 distinct species · 8 281 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

8 281 obs · 21 cellules
Obs. / cellule
≥ 2 312
1 020–2 311
297–1 019
146–296
< 146

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

Ecological tissue

Sample of 26 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 米代川 : 19 espèces reliées par 32 interactions GloBI sur 3 types (connectance 9.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
32
Connectance
0.091
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°

7,6°C

Annual rain

1 538mm

Moisture idx (CMI)

0,48

Runoff

912mm/an

PET

796mm

AET

778mm

Mean slope

14,3°

Water table

418cm

Forest

92%

Crops

2%

Urban

3%

Protected

10%

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