Rivière· 6 segments
Hølandselva
Crosses 2 administrative regions : Aurskog-Høland, Marker
Total length
20km
Max discharge
11,5m³/s
Max Strahler
4
Segments matched
6
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- Aurskog-HølandAkershus · Norway25.2 kmin this dpt
- MarkerÃstfold · Norway1.0 kmin this dpt
4 intersecting protected areas
Bergsjø-Hølandselva
IUCN IVWildlife Conservation Area
Bergsjø-Hølandselva
IUCN Not ReportedEmerald Network
Langrasta
IUCN IaNature Reserve
Langrasta
IUCN Not ReportedEmerald Network
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
179 distinct species · 305 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Hølandselva : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 76 interactions GloBI sur 5 types (connectance 10.8%, 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
20km
Max discharge
11,5m³/s
Max Strahler
4
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.