Ruisseau· 12 segments
Ognaelva
Crosses 3 administrative regions : Bjerkreim, Eigersund, Hå
Total length
16km
Max discharge
5,7m³/s
Max Strahler
3
Segments matched
12
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
8 intersecting protected areas
Jærstrendene
IUCN Not ReportedEmerald Network
Jærkysten
IUCN IaMarine Protected Area (OSPAR)
Jærkysten
IUCN Not ReportedMarine Protected Area
Jærstrendene
IUCN VProtected Landscape
Jaeren wetland system
IUCN IaWetland of International Importance (Ramsar Site)
Jærstrendene
IUCN IVBotanical Conservation Area
Rabali
IUCN Not ReportedEmerald Network
Rabali
IUCN IaNature Reserve
1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 508 distinct species · 7 944 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Ognaelva : 32 espèces reliées par 58 interactions GloBI sur 5 types (connectance 6.7%, filtre Serrano α=0.2). 10 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
16km
Max discharge
5,7m³/s
Max Strahler
3
Segments matched
12
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.