Ruisseau· 13 segments
Rio Arda
Crosses 3 administrative regions : Arouca, Castelo de Paiva, Penafiel
Total length
39km
Max discharge
4,5m³/s
Max Strahler
3
Segments matched
13
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- AroucaAveiro · Portugal17.4 kmin this dpt
- Castelo de PaivaAveiro · Portugal7.6 kmin this dpt
- PenafielPorto · Portugal0.0 kmin this dpt
1 intersecting protected areas
Serras da Freita e Arada
IUCN Not ReportedSite of Community Importance (Habitats Directive)
1 page = 1 named river (aggregation of 13 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
352 distinct species · 1 078 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Arda : 28 espèces reliées par 98 interactions GloBI sur 6 types (connectance 12.6%, filtre Serrano α=0.2). 12 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
39km
Max discharge
4,5m³/s
Max Strahler
3
Segments matched
13
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.