Ontologia

HydroBASINS lev08 watershed · #4080040130

Bassin de 山国川

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 10 administrative regions : Buzen, Chikujō, Hita, Kusu, Kōge +5

2% lakePfafstetter: 41305734

Sub-basin area

540,8km²

Upstream area

540,9km²

Discharge

17,94m³/s

Mean elev.

385m

Administrative coverage

10 dept-equivalent regions (GADM L2)

2 more
  • Miyako1.1 km² · 0.2%
  • Chikujō0.5 km² · 0.1%

13 intersecting protected areas

  • Yaba-Hita-Hikosan

    IUCN V

    Quasi National Park

    441.48 km² overlap

  • Hikosan

    IUCN IV

    Prefectural Wildlife Protection Area

    10.31 km² overlap

  • Domonrakanji

    IUCN IV

    Prefectural Wildlife Protection Area

    5.23 km² overlap

  • Ifuku

    IUCN IV

    Prefectural Wildlife Protection Area

    2.76 km² overlap

  • Yabakei dam

    IUCN IV

    Prefectural Wildlife Protection Area

    1.78 km² overlap

  • Oosanshouuo seisokuchi

    IUCN III

    National Natural Monument

    1.52 km² overlap

  • Hachiya

    IUCN IV

    Prefectural Wildlife Protection Area

    0.68 km² overlap

  • Kuboteyama

    IUCN IV

    Prefectural Wildlife Protection Area

    0.55 km² overlap

  • Inugadake Buna To Idenshigen

    IUCN IV

    Rare Population Protected Forest

    0.33 km² overlap

4 more protected areas

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

Species present

491 distinct species · 1 566 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 566 obs · 18 cellules
Obs. / cellule
≥ 291
237–290
96–236
58–95
< 58

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

Ecological tissue

Sample of 17 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 山国川 : 16 espèces reliées par 18 interactions GloBI sur 2 types (connectance 11.8%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
18
Connectance
0.118
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°

13,6°C

Annual rain

2 033mm

Moisture idx (CMI)

0,49

Runoff

1 181mm/an

PET

1 027mm

AET

1 026mm

Mean slope

12,8°

Water table

429cm

Forest

85%

Crops

9%

Urban

4%

Protected

82%

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