Ontologia

HydroBASINS lev08 watershed · #4080039770

Bassin de 六角川

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 11 administrative regions : Hasami, Imari, Karatsu, Kōhoku, Ogi +6

Pfafstetter: 41305714

Sub-basin area

336,6km²

Upstream area

336,9km²

Discharge

12,31m³/s

Mean elev.

101m

Administrative coverage

11 dept-equivalent regions (GADM L2)

3 more

9 intersecting protected areas

  • Ten zan

    IUCN V

    Prefectural Natural Park

    10.68 km² overlap

  • Mizudo

    IUCN IV

    Prefectural Wildlife Protection Area

    3.05 km² overlap

  • Hachiman dake

    IUCN V

    Prefectural Natural Park

    2.93 km² overlap

  • Tenzan

    IUCN IV

    Prefectural Wildlife Protection Area

    2.03 km² overlap

  • Koya

    IUCN IV

    Prefectural Wildlife Protection Area

    1.63 km² overlap

  • Oninohanayama

    IUCN IV

    Prefectural Wildlife Protection Area

    1.18 km² overlap

  • Hatcho dam

    IUCN IV

    Prefectural Wildlife Protection Area

    0.34 km² overlap

  • Hachimandake

    IUCN IV

    Prefectural Wildlife Protection Area

    0.12 km² overlap

  • The country of falconer

    IUCN Not Applicable

    OECM

    0.04 km² overlap

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

Species present

515 distinct species · 2 362 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 362 obs · 12 cellules
Obs. / cellule
≥ 763
324–762
187–323
172–186
< 172

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

Ecological tissue

Sample of 30 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 六角川 : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 57 interactions GloBI sur 2 types (connectance 10.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
57
Connectance
0.108
Patrimoniales
2
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°

15,9°C

Annual rain

1 903mm

Moisture idx (CMI)

0,45

Runoff

1 192mm/an

PET

1 039mm

AET

1 038mm

Mean slope

7,2°

Water table

269cm

Forest

41%

Crops

12%

Urban

32%

Protected

6%

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