Ontologia

HydroBASINS lev08 watershed · #4080561380

Bassin de 四釜川

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 : Minakami, Numata, Takayama

Pfafstetter: 41301697

Sub-basin area

51,5km²

Upstream area

822,2km²

Discharge

21,5m³/s

Mean elev.

674m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de 薄根川23 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Minakami

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    0.91 km² overlap

  • Kashozan

    IUCN IV

    Prefectural Wildlife Protection Area

    0.36 km² overlap

  • Usune no ookuwa

    IUCN III

    National Natural Monument

    0.00 km² overlap

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

Species present

1 069 distinct species · 3 205 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 205 obs · 2 cellules
Obs. / cellule
≥ 1 732
1 732–1 731
1 732–1 731
1 732–1 731
< 1 732

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

Ecological tissue

Sample of 18 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 四釜川 : 17 espèces reliées par 11 interactions GloBI sur 4 types (connectance 7.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
11
Connectance
0.072
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°

10,4°C

Annual rain

1 631mm

Moisture idx (CMI)

0,42

Runoff

749mm/an

PET

937mm

AET

923mm

Mean slope

12,9°

Water table

447cm

Forest

78%

Crops

6%

Urban

19%

Protected

1%

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