Ruisseau· 3 segments
Hååna
Crosses 3 administrative regions : Hå, Klepp, Time
Total length
19km
Max discharge
9,1m³/s
Max Strahler
3
Segments matched
3
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
10 intersecting protected areas
Jærstrendene
IUCN Not ReportedEmerald Network
Jærkysten
IUCN IaMarine Protected Area (OSPAR)
Jærkysten
IUCN Not ReportedMarine Protected Area
Jærstrendene
IUCN IVWildlife Conservation Area
Jærstrendene
IUCN VProtected Landscape
Jaeren wetland system
IUCN IaWetland of International Importance (Ramsar Site)
Jærstrendene
IUCN IVBotanical Conservation Area
Søylandsvatnet
IUCN Not ReportedEmerald Network
Søylandsvatnet
IUCN IaNature Reserve
1 more protected areassorted by area
Vigre
IUCN IaNature Reserve
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 694 distinct species · 154 714 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Hååna : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 3 types (connectance 17.7%, filtre Serrano α=0.2). 7 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
19km
Max discharge
9,1m³/s
Max Strahler
3
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.