HydroBASINS lev08 watershed · #4080046100
Bassin · #4080046100
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 1 administrative regions : Toshima
Sub-basin area
143,4km²
Upstream area
143,4km²
Discharge
5,88m³/s
Mean elev.
147m
Administrative coverage
3 intersecting protected areas
Toshima
IUCN IVPrefectural Wildlife Protection Area
101.38 km² overlap
Tokara Retto
IUCN VPrefectural Natural Park
46.60 km² overlap
Common fishery right area
41.48 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
232 distinct species · 495 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin · #4080046100 : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 5 types (connectance 5.3%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
19,6°C
Annual rain
2 942mm
Moisture idx (CMI)
0,65
Runoff
1 482mm/an
PET
1 018mm
AET
1 018mm
Mean slope
13,5°
Water table
477cm
Forest
28%
Crops
7%
Urban
0%
Protected
70%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)