Ontologia

HydroBASINS lev08 watershed · #4080041030

Bassin de 吉野川

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 2 administrative regions : Kitajima, Tokushima

38% lakePfafstetter: 41304041

Sub-basin area

8,7km²

Upstream area

3 372km²

Discharge

135,67m³/s

Mean elev.

17m

Administrative coverage

Hydrographic chain

Drains into

Outlet (drains to ocean / endorheic)

Receives from 2 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Bizan

    IUCN IV

    Prefectural Wildlife Protection Area

    1.12 km² overlap

  • Akuigawa

    IUCN IV

    Prefectural Wildlife Protection Area

    0.14 km² overlap

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

Species present

157 distinct species · 844 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

844 obs · 1 cellules
Obs. / cellule
≥ 844
844–843
844–843
844–843
< 844

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

Ecological tissue

Sample of 33 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 吉野川 : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 5 types (connectance 12.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
81
Connectance
0.129
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°

16,0°C

Annual rain

1 577mm

Moisture idx (CMI)

0,36

Runoff

1 027mm/an

PET

1 016mm

AET

1 014mm

Mean slope

2,0°

Water table

149cm

Forest

0%

Crops

3%

Urban

100%

Protected

9%

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