HydroBASINS lev08 watershed · #2080046890
Bassin de Fiume Alcantara
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 7 administrative regions : Agrigento, Caltanissetta, Catania, Enna, Messina +2
Sub-basin area
9 448,7km²
Upstream area
9 448,7km²
Discharge
1,44m³/s
Mean elev.
455m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 3250.3 km²34.4% of basin
- 2834.2 km²30.0% of basin
- 2204.1 km²23.3% of basin
- 944.6 km²10.0% of basin
- 9.6 km²0.1% of basin
- 9.3 km²0.1% of basin
- 0.6 km²0.0% of basin
30 intersecting protected areas
Parco dei Nebrodi
IUCN IVRegional/Provincial Nature Park
585.77 km² overlap
Monti Nebrodi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
456.12 km² overlap
Parco delle Madonie
IUCN Not ReportedSpecial Protection Area (Birds Directive)
344.62 km² overlap
Parco delle Madonie
IUCN IVRegional/Provincial Nature Park
328.57 km² overlap
Parco dell' Etna
IUCN IVRegional/Provincial Nature Park
325.92 km² overlap
Monti Peloritani, Dorsale Curcuraci, Antennamare e area marina dello stretto di Messina
IUCN Not ReportedSpecial Protection Area (Birds Directive)
205.27 km² overlap
Monti Sicani, Rocca Busambra e Bosco della Ficuzza
IUCN Not ReportedSpecial Protection Area (Birds Directive)
168.20 km² overlap
Monte Cofano, Capo San Vito e Monte Sparagio
IUCN Not ReportedSpecial Protection Area (Birds Directive)
152.29 km² overlap
Dorsale Curcuraci, Antennamare
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
114.91 km² overlap
21 more protected areassorted by overlap area
Mount Etna
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
102.46 km² overlap
Serra del Re, Monte Soro e Biviere di Cesarò
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
93.19 km² overlap
Monte Pecoraro e Pizzo Cirina
IUCN Not ReportedSpecial Protection Area (Birds Directive)
86.05 km² overlap
Special Areas of Conservation (Habitats Directive)
83.60 km² overlap
Special Areas of Conservation (Habitats Directive)
73.37 km² overlap
Fiume Fiumedinisi, Monte Scuderi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
72.03 km² overlap
Pizzo Fau, Monte Pomiere, Pizzo Bidi e Serra della Testa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
69.03 km² overlap
Raffo Rosso, Monte Cuccio e Vallone Sagana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
65.66 km² overlap
Riserva naturale orientata Bosco della Ficuzza, Rocca Busambra, Bosco del Cappelliere e Gorgo d
IUCN IVRegional/Provincial Nature Reserve
55.39 km² overlap
Arcipelago delle Egadi - area marina e terrestre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
53.62 km² overlap
Monte Cane, Pizzo Selva a Mare, Monte Trigna
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
49.46 km² overlap
Montagna Longa, Pizzo Montanello
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
49.23 km² overlap
Regional/Provincial Nature Reserve
46.34 km² overlap
Sciare di Marsala
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
45.76 km² overlap
Tratto Montano del Bacino della Fiumara di Agrò
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
45.40 km² overlap
Boschi Ficuzza e Cappelliere, Vallone Cerasa, Castagneti Mezzojuso
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
44.29 km² overlap
Complesso Pizzo Dipilo e Querceti su calcare
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
43.90 km² overlap
Monte Matassaro, Monte Gradara e Monte Signora
IUCN Not ReportedSpecial Protection Area (Birds Directive)
39.90 km² overlap
Monte Matassaro, Monte Gradara e Monte Signora
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
39.90 km² overlap
Alta Valle del Fiume Alcantara
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
36.34 km² overlap
Vallone Laccaretta e Urio Quattrocchi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
35.72 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 793 distinct species · 205 327 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Fiume Alcantara : 36 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 91 interactions GloBI sur 4 types (connectance 8.4%, filtre Serrano α=0.2). 11 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°
15,6°C
Annual rain
576mm
Moisture idx (CMI)
-0,38
Runoff
190mm/an
PET
939mm
AET
479mm
Mean slope
10,4°
Water table
447cm
Forest
22%
Crops
3%
Urban
15%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)