Lago di Bolsena, Isole Bisentina e Martana
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 1999
115 km²
Commune · ITA
Bolsena
Italy
CsaTemperate, dry summer, hot summer(96 %)
Species observed
664
Observations
2 033
Area
63,6km²
Ecological tissue
Sample of 41 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).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Bolsena : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 5 types (connectance 11.4%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
43
Interactions affichées
103
Connectance
0.114
Patrimoniales
1
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
664 distinct species · 2 033 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
13,5°C
Annual rain
855mm
Warmest m°
28,8°C
Coldest m°
1,5°C
Elevation: 384 m on average (min 305 m, max 619 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
13,5°C
Annual rain
855mm
Warmest month
28,8°C
Coldest month
1,5°C
Mean alt.
384m
Min
305m
Max
619m
Std. dev.
98m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(96 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,9
Org. C
35,6g/kg
Clay
30,0%
Sand
27,9%
Silt
42,1%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Viterbo
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,9
Org. C
64,8g/kg
Clay
28,7%
Sand
28,8%
Silt
42,5%
5–15 cm
pH H₂O
6,9
Org. C
23,8g/kg
Clay
29,3%
Sand
28,3%
Silt
42,4%
15–30 cm
pH H₂O
6,9
Org. C
18,3g/kg
Clay
31,9%
Sand
26,7%
Silt
41,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest17.7%
Crops13.3%
Built-up0.6%
Bare soil1.1%
Other (grassland, water…)67.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
9,0km
Lake surface here
27,46km²
Basins crossed
2
Max stream order
1
Max drainage
1 325km²
Discharge in basins
0,7m³/s
Mean precip.
701mm/an
Mean T°
14,5°C
Moisture idx
-0,29
Max snow
2%
Mean runoff
316mm/an
Mean elev. (basins)
283m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,9nW
Built-up
58,4%
Pesticides
55,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN Not Reported · 4
Lago di Bolsena
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
115 km²
Monti Vulsini
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 1999
24 km²
Monti Vulsini
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
24 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN