Ruisseau· 5 segments
Fiume Nera
Crosses 2 administrative regions : Macerata, Perugia
Total length
21km
Max discharge
4,1m³/s
Max Strahler
3
Segments matched
5
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- PerugiaUmbria · Italy12.6 kmin this dpt
- MacerataMarche · Italy0.8 kmin this dpt
9 intersecting protected areas
National Park
Monti Sibillini (versante umbro)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Monti Sibillini (versante umbro)
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Valnerina, Montagna di Torricchio, Monte Fema e Monte Cavallo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Gola della Valnerina - Monte Fema
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Gola del Corno - Stretta di Biselli
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Monti lo Stiglio - Pagliaro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Valnerina
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Valle di Campiano (Preci)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
58 distinct species · 69 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Fiume Nera : 20 espèces reliées par 22 interactions GloBI sur 5 types (connectance 9.5%, filtre Serrano α=0.2). 2 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
21km
Max discharge
4,1m³/s
Max Strahler
3
Segments matched
5
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.