Ontologia

HydroBASINS lev08 watershed · #4080041600

Bassin de 市川

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 25 administrative regions : Aioi, Akaiwa, Akō, Asago, Bizen +20

Coastal basinPfafstetter: 41301133

Sub-basin area

2 984,1km²

Upstream area

2 984,1km²

Discharge

0,67m³/s

Mean elev.

291m

Administrative coverage

25 dept-equivalent regions (GADM L2)

17 more

30 intersecting protected areas

21 more protected areas

  • Kasagata yama sengamine

    IUCN V

    Prefectural Natural Park

    30.34 km² overlap

  • Asago Gunsan

    IUCN V

    Prefectural Natural Park

    26.56 km² overlap

  • Mineyama

    IUCN IV

    Prefectural Wildlife Protection Area

    14.32 km² overlap

  • Eastern Chugoku Mountains

    IUCN V

    Green Corridor

    13.91 km² overlap

  • Ieshima

    IUCN IV

    Prefectural Wildlife Protection Area

    11.52 km² overlap

  • Hyonosen

    IUCN IV

    Prefectural Wildlife Protection Area

    9.57 km² overlap

  • Jinjusan

    IUCN IV

    Prefectural Wildlife Protection Area

    8.08 km² overlap

  • Masuiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    7.90 km² overlap

  • Himejishi yamada

    IUCN IV

    Prefectural Wildlife Protection Area

    7.49 km² overlap

  • Himeji shi

    IUCN IV

    Prefectural Wildlife Protection Area

    7.23 km² overlap

  • Kasagata

    IUCN IV

    Prefectural Wildlife Protection Area

    6.80 km² overlap

  • Sakurayama

    IUCN IV

    Prefectural Wildlife Protection Area

    6.74 km² overlap

  • Higashiyama

    IUCN IV

    Prefectural Wildlife Protection Area

    5.78 km² overlap

  • Kankakei

    IUCN IV

    Prefectural Wildlife Protection Area

    5.07 km² overlap

  • Ohirayama

    IUCN IV

    Prefectural Wildlife Protection Area

    4.96 km² overlap

  • Hikihara

    IUCN IV

    Prefectural Wildlife Protection Area

    3.81 km² overlap

  • Nanko ruriji

    IUCN IV

    Prefectural Wildlife Protection Area

    3.20 km² overlap

  • Maejima

    IUCN IV

    Prefectural Wildlife Protection Area

    3.06 km² overlap

  • Yoshii gawa Churyu

    IUCN V

    Prefectural Natural Park

    2.60 km² overlap

  • Aioishi hinoura

    IUCN IV

    Prefectural Wildlife Protection Area

    2.25 km² overlap

  • Ootakisan

    IUCN V

    Local Nature Protection Area(Okayama)

    2.12 km² overlap

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

Species present

4 635 distinct species · 53 896 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

53 896 obs · 94 cellules
Obs. / cellule
≥ 2 995
1 139–2 994
648–1 138
427–647
< 427

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

Ecological tissue

Sample of 31 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 市川 : 26 espèces reliées par 55 interactions GloBI sur 4 types (connectance 9.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
55
Connectance
0.098
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°

13,4°C

Annual rain

1 551mm

Moisture idx (CMI)

0,33

Runoff

844mm/an

PET

1 021mm

AET

1 007mm

Mean slope

13,2°

Water table

450cm

Forest

68%

Crops

6%

Urban

20%

Protected

23%

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