HydroBASINS lev08 watershed · #2080047720
Bassin de Tirso
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 : Oristano
Sub-basin area
444,5km²
Upstream area
3 398,1km²
Discharge
33,2m³/s
Mean elev.
142m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rio Arascisi831 km²
- Bassin de Riu Siddo330 km²
1 intersecting protected areas
Media Valle del Tirso e Altopiano di Abbasanta - Rio Siddu
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
31.77 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 033 distinct species · 2 203 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 de Tirso : 34 espèces reliées par 103 interactions GloBI sur 5 types (connectance 10.0%, filtre Serrano α=0.2). 12 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°
16,0°C
Annual rain
617mm
Moisture idx (CMI)
-0,39
Runoff
244mm/an
PET
1 014mm
AET
515mm
Mean slope
3,5°
Water table
292cm
Forest
2%
Crops
12%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)