Ontologia

Rivière· 111 segments

Ljungan

Crosses 5 administrative regions : Berg, Härjedalen, Sundsvall, Ånge, Åre

rivière

Total length

368km

Max discharge

101,9m³/s

Max Strahler

5

Segments matched

111

River geography5 admin regions · 0 communes

Parent watershed

hybas-2080198010708 km²

5 administrative regions crossed (GADM L2)

  • Berg
    Jämtland · Sweden
    278.6 km
    in this dpt
  • Ånge
    Västernorrland · Sweden
    148.0 km
    in this dpt
  • Sundsvall
    Västernorrland · Sweden
    79.4 km
    in this dpt
  • Åre
    Jämtland · Sweden
    4.7 km
    in this dpt
  • Härjedalen
    Jämtland · Sweden
    3.2 km
    in this dpt

30 intersecting protected areas

21 more protected areas

1 page = 1 named river (aggregation of 111 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

217 distinct species · 897 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 43 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Ljungan : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 70 interactions GloBI sur 7 types (connectance 7.8%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
70
Connectance
0.077
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

368km

Max discharge

101,9m³/s

Max Strahler

5

Segments matched

111

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.