HydroBASINS lev08 watershed · #2080047800
Bassin de Riu de Calvia
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 : Oristano, Sassari
Sub-basin area
162,6km²
Upstream area
162,6km²
Discharge
0,77m³/s
Mean elev.
205m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 100.0 km²61.4% of basin
- 52.0 km²32.0% of basin
5 intersecting protected areas
Entroterra e zona costiera tra Bosa, Capo Marargiu e Porto Tangone
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
85.75 km² overlap
Costa e Entroterra di Bosa, Suni e Montresta
IUCN Not ReportedSpecial Protection Area (Birds Directive)
37.76 km² overlap
Capo Caccia (con le isole Foradada e Piana) e Punta del Giglio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.73 km² overlap
Capo Caccia
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.73 km² overlap
Regional/Provincial Nature Park
0.49 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
685 distinct species · 2 701 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Riu de Calvia : 30 espèces reliées par 104 interactions GloBI sur 5 types (connectance 12.1%, 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°
15,5°C
Annual rain
676mm
Moisture idx (CMI)
-0,31
Runoff
156mm/an
PET
981mm
AET
539mm
Mean slope
9,8°
Water table
499cm
Forest
5%
Crops
3%
Urban
11%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)