Alte Valli Anzasca, Antrona e Bognanco
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2006
216 km²
Commune · ITA
Varzo
Italy
DfcCold, no dry season, cold summer(38 %)
Species observed
223
Observations
359
Area
87,8km²
Ecological tissue
Sample of 37 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 Varzo : 33 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 4 bulles famille, 52 interactions GloBI documentées sur 5 types (connectance 7.8%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
37
Interactions affichées
52
Connectance
0.078
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
223 distinct species · 359 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
1,8°C
Annual rain
1 842mm
Warmest m°
16,6°C
Coldest m°
-13,1°C
Elevation: 1 817 m on average (min 659 m, max 3 188 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
1,8°C
Annual rain
1 842mm
Warmest month
16,6°C
Coldest month
-13,1°C
Mean alt.
1 817m
Min
659m
Max
3 188m
Std. dev.
602m
Köppen-Geiger (dominant)
DfcCold, no dry season, cold summer(38 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,0
Org. C
68,1g/kg
Clay
17,7%
Sand
44,3%
Silt
38,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiMaggregated to Verbano-Cusio-Ossola
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,0
Org. C
106,0g/kg
Clay
17,4%
Sand
44,1%
Silt
38,6%
5–15 cm
pH H₂O
6,0
Org. C
59,2g/kg
Clay
17,2%
Sand
44,4%
Silt
38,4%
15–30 cm
pH H₂O
6,0
Org. C
39,0g/kg
Clay
18,5%
Sand
44,5%
Silt
37,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest29.0%
Crops0.4%
Built-up0.3%
Bare soil14.2%
Other (grassland, water…)56.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
26,5km
Lake surface here
0,15km²
Basins crossed
2
Max stream order
3
Max drainage
1 883km²
Discharge in basins
4,3m³/s
Mean precip.
1 453mm/an
Mean T°
4,4°C
Moisture idx
0,55
Max snow
56%
Mean runoff
1 381mm/an
Mean elev. (basins)
1 515m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (12, ord ≥ 4)
- Rio di Cattagnaord 3len here4.11 km75%total5 km
- Rio Fruaord 1len here3.40 km100%total3 km
- Rio delle Stregheord 2len here3.32 km100%total3 km
- Rio d'Auronaord 1len here3.08 km84%total4 km
- Torrente Cairascaord 2len here2.68 km24%total11 km
- Rio San Giovanniord 1len here2.55 km100%total3 km
- Il Rioord 3len here2.24 km30%total8 km
- Rio Pontoneord 3len here1.74 km94%total2 km
- Rio Mottisciaord 1len here1.26 km100%total1 km
- Rio Fresaiaord 1len here1.24 km95%total1 km
- Riale del Parisord 1len here0.60 km87%total1 km
- Rio di Varzoord 3len here0.32 km100%total0 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,3nW
Built-up
24,6%
Pesticides
60,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN Not Reported · 3IUCN IV · 1
Alpi Veglia e Devero - Monte Giove
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2006
151 km²
Alpi Veglia e Devero - Monte Giove
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2017
151 km²
Parco naturale dell'Alpe Veglia e dell'Alpe Devero
IUCN IVRegional/Provincial Nature Park · 1995
86 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN