Ruisseau· 20 segments
Rio Alva
Crosses 6 administrative regions : Arganil, Oliveira do Hospital, Penacova, Seia, Tábua +1
Total length
109km
Max discharge
10,9m³/s
Max Strahler
3
Segments matched
20
River geography6 admin regions · 0 communes
6 administrative regions crossed (GADM L2)
- ArganilCoimbra · Portugal25.6 kmin this dpt
- SeiaGuarda · Portugal21.5 kmin this dpt
- Oliveira do HospitalCoimbra · Portugal11.5 kmin this dpt
- TábuaCoimbra · Portugal10.5 kmin this dpt
- PenacovaCoimbra · Portugal4.7 kmin this dpt
- Vila Nova de PoiaresCoimbra · Portugal2.3 kmin this dpt
2 intersecting protected areas
Serra da Estrela
IUCN VNature Park
Serra da Estrela
IUCN Not ReportedSite of Community Importance (Habitats Directive)
1 page = 1 named river (aggregation of 20 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
519 distinct species · 2 030 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Rio Alva : 28 espèces reliées par 113 interactions GloBI sur 6 types (connectance 13.1%, filtre Serrano α=0.2). 14 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
109km
Max discharge
10,9m³/s
Max Strahler
3
Segments matched
20
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.