Rivière· 56 segments
Arno
Crosses 3 administrative regions : Arezzo, Florence, Pisa
Total length
244km
Max discharge
134,3m³/s
Max Strahler
4
Segments matched
56
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- FlorenceToscana · Italy54.0 kmin this dpt
- PisaToscana · Italy53.1 kmin this dpt
- ArezzoToscana · Italy47.6 kmin this dpt
14 intersecting protected areas
International significance Natural Marine Area
National Park
Regional/Provincial Nature Park
Massaciuccoli lake and marsh
IUCN IVWetland of International Importance (Ramsar Site)
Foreste Alto Bacino dell'Arno
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Selva Pisana
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Selva Pisana
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Stagni della Piana Fiorentina e Pratese
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Stagni della Piana Fiorentina e Pratese
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5 more protected areassorted by area
Ponte a Buriano e Penna
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Valle dell'Inferno e Bandella
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Valle dell'Inferno e Bandella
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Regional/Provincial Nature Reserve
Regional/Provincial Nature Reserve
1 page = 1 named river (aggregation of 56 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
798 distinct species · 2 923 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Arno : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 5 types (connectance 12.0%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
244km
Max discharge
134,3m³/s
Max Strahler
4
Segments matched
56
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.