Rivière· 17 segments
Siraelven
Crosses 2 administrative regions : Forsand, Sirdal
Total length
15km
Max discharge
35,7m³/s
Max Strahler
4
Segments matched
17
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
3 intersecting protected areas
Setesdal Vesthei Ryfylkeheiane
IUCN Not ReportedEmerald Network
Protected Landscape
Instestøl
IUCN IaNature Reserve
1 page = 1 named river (aggregation of 17 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
238 distinct species · 613 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Siraelven : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 6 types (connectance 13.3%, 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
15km
Max discharge
35,7m³/s
Max Strahler
4
Segments matched
17
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.