Ontologia

HydroBASINS lev08 watershed · #4080041710

Bassin de 吉井川

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 22 administrative regions : Akaiwa, Akō, Bizen, Chizu, Kagamino +17

Pfafstetter: 41301134

Sub-basin area

2 229,1km²

Upstream area

2 229,1km²

Discharge

51,49m³/s

Mean elev.

332m

Administrative coverage

22 dept-equivalent regions (GADM L2)

14 more

30 intersecting protected areas

  • Hyonosen-Ushiroyama-Nagisan

    IUCN V

    Quasi National Park

    135.06 km² overlap

  • Yubara okutsu

    IUCN V

    Prefectural Natural Park

    85.36 km² overlap

  • Yoshii gawa Churyu

    IUCN V

    Prefectural Natural Park

    75.96 km² overlap

  • Shinrin koen

    IUCN IV

    Prefectural Wildlife Protection Area

    12.10 km² overlap

  • Mitani yama

    IUCN IV

    Prefectural Wildlife Protection Area

    10.63 km² overlap

  • Kamo

    IUCN IV

    Prefectural Wildlife Protection Area

    6.99 km² overlap

  • Okutsu

    IUCN IV

    Prefectural Wildlife Protection Area

    5.91 km² overlap

  • Wakasugi

    IUCN IV

    Prefectural Wildlife Protection Area

    5.19 km² overlap

  • Kajinami ute

    IUCN IV

    Prefectural Wildlife Protection Area

    4.29 km² overlap

21 more protected areas

  • Shinrin Kenkyujo

    IUCN IV

    Prefectural Wildlife Protection Area

    4.05 km² overlap

  • Kurosawa yama

    IUCN IV

    Prefectural Wildlife Protection Area

    3.83 km² overlap

  • Takashimizu kogen

    IUCN IV

    Prefectural Wildlife Protection Area

    3.24 km² overlap

  • Onbarako

    IUCN IV

    Prefectural Wildlife Protection Area

    2.93 km² overlap

  • Santoku

    IUCN IV

    Prefectural Wildlife Protection Area

    2.20 km² overlap

  • Shiodeike

    IUCN IV

    Prefectural Wildlife Protection Area

    2.10 km² overlap

  • Makisan

    IUCN V

    Local Nature Protection Area(Okayama)

    1.67 km² overlap

  • Ootakisan

    IUCN V

    Local Nature Protection Area(Okayama)

    1.22 km² overlap

  • Mitsuishi mitani

    IUCN IV

    Prefectural Wildlife Protection Area

    1.07 km² overlap

  • Shizenhogo Center

    IUCN IV

    Prefectural Wildlife Protection Area

    0.97 km² overlap

  • Kinokura

    IUCN IV

    Prefectural Wildlife Protection Area

    0.82 km² overlap

  • Yahazuyama

    IUCN V

    Local Nature Protection Area(Okayama)

    0.75 km² overlap

  • Eastern Chugoku Mountains

    IUCN V

    Green Corridor

    0.70 km² overlap

  • Ashizu

    IUCN IV

    Prefectural Wildlife Protection Area

    0.68 km² overlap

  • Waidani

    IUCN IV

    Prefectural Wildlife Protection Area

    0.64 km² overlap

  • Hattouji

    IUCN V

    Local Nature Protection Area(Okayama)

    0.54 km² overlap

  • Onzui chikusa

    IUCN V

    Prefectural Natural Park

    0.44 km² overlap

  • Shizutani

    IUCN IV

    Prefectural Wildlife Protection Area

    0.43 km² overlap

  • Kibi Seiryu

    IUCN V

    Prefectural Natural Park

    0.38 km² overlap

  • Genjuji

    IUCN IV

    Prefectural Wildlife Protection Area

    0.21 km² overlap

  • Waidani

    IUCN V

    Local Nature Protection Area(Okayama)

    0.18 km² overlap

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

Species present

2 446 distinct species · 22 391 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

22 391 obs · 76 cellules
Obs. / cellule
≥ 1 169
600–1 168
399–599
216–398
< 216

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

Ecological tissue

Sample of 20 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 吉井川 : 19 espèces reliées par 18 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
18
Connectance
0.095
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°

12,9°C

Annual rain

1 589mm

Moisture idx (CMI)

0,34

Runoff

852mm/an

PET

1 029mm

AET

1 017mm

Mean slope

11,2°

Water table

396cm

Forest

74%

Crops

7%

Urban

13%

Protected

15%

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