Ruisseau· 21 segments
Rio Arunca
Crosses 3 administrative regions : Montemor-o-Velho, Pombal, Soure
Total length
55km
Max discharge
6,8m³/s
Max Strahler
3
Segments matched
21
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- PombalLeiria · Portugal41.2 kmin this dpt
- SoureCoimbra · Portugal15.0 kmin this dpt
- Montemor-o-VelhoCoimbra · Portugal1.0 kmin this dpt
3 intersecting protected areas
Sicó / Alvaiázere
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Paúl de Madriz
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Paul da Madriz
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1 page = 1 named river (aggregation of 21 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
700 distinct species · 1 988 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Arunca : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 5 types (connectance 11.3%, filtre Serrano α=0.2). 13 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
55km
Max discharge
6,8m³/s
Max Strahler
3
Segments matched
21
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.