HydroBASINS lev08 watershed · #2080015700
Bassin de Marta
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 : Terni, Viterbo
Sub-basin area
1 081,9km²
Upstream area
1 081,9km²
Discharge
11,24m³/s
Mean elev.
282m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 1079.8 km²99.6% of basin
- 3.8 km²0.4% of basin
20 intersecting protected areas
Lago di Bolsena, Isole Bisentina e Martana
IUCN Not ReportedSpecial Protection Area (Birds Directive)
114.93 km² overlap
Lago di Bolsena
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
114.66 km² overlap
Monte Romano
IUCN Not ReportedSpecial Protection Area (Birds Directive)
38.39 km² overlap
Monte Romano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
37.34 km² overlap
Monti Vulsini
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
23.88 km² overlap
Monti Vulsini
IUCN Not ReportedSpecial Protection Area (Birds Directive)
23.88 km² overlap
Regional/Provincial Nature Reserve
19.02 km² overlap
Comprensorio Tolfetano-Cerite-Manziate
IUCN Not ReportedSpecial Protection Area (Birds Directive)
16.39 km² overlap
Fiume Marta (alto corso)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.04 km² overlap
11 more protected areassorted by overlap area
Regional/Provincial Nature Reserve
3.13 km² overlap
Regional/Provincial Nature Park
2.21 km² overlap
Acropoli di Tarquinia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.19 km² overlap
Necropoli di Tarquinia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.52 km² overlap
Gole del Torrente Biedano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.89 km² overlap
Sughereta di Tuscania
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.40 km² overlap
Isole Bisentina e Martana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.26 km² overlap
Il "Quarto" di Barbarano Romano
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.25 km² overlap
Monte Fogliano e Monte Venere
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.03 km² overlap
Lago di Vico Monte Venere e Monte Fogliano
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.03 km² overlap
Fondali tra Marina di Tarquinia e Punta della Quaglia
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 839 distinct species · 21 582 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 Marta : 39 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 3 types (connectance 10.2%, filtre Serrano α=0.2). 6 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°
14,5°C
Annual rain
701mm
Moisture idx (CMI)
-0,29
Runoff
316mm/an
PET
987mm
AET
588mm
Mean slope
3,5°
Water table
267cm
Forest
12%
Crops
40%
Urban
5%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)