Ruisseau· 3 segments
Svartån
Crosses 1 administrative regions : Ljusdal
Total length
493km
Max discharge
0,2m³/s
Max Strahler
1
Segments matched
3
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- LjusdalGävleborg · Sweden8.4 kmin this dpt
6 intersecting protected areas
2000933 Hamra
IUCN IINational Park
Mellanljusnan
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Mellanljusnan Korskrogen-Edeforsen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Mellanljusnan Korskrogen-Edeforsen
IUCN Not AssignedNatura 2000 SCI
n/a.
IUCN IVNature conservation agreement, County Administrative Board
SK 149-2001
IUCN IaHabitat Protection Area
1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
217 distinct species · 591 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 Svartån : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 4 types (connectance 7.8%, 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
493km
Max discharge
0,2m³/s
Max Strahler
1
Segments matched
3
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.