Ontologia

Rivière· 18 segments

Hårkan

Crosses 2 administrative regions : Krokom, Östersund

rivière

Total length

40km

Max discharge

245,9m³/s

Max Strahler

6

Segments matched

18

River geography2 admin regions · 0 communes

Parent watershed

hybas-20801840201143 km²

2 administrative regions crossed (GADM L2)

  • Östersund
    Jämtland · Sweden
    60.2 km
    in this dpt
  • Krokom
    Jämtland · Sweden
    21.1 km
    in this dpt

16 intersecting protected areas

7 more protected areas

1 page = 1 named river (aggregation of 18 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

275 distinct species · 1 600 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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 Hårkan : 25 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 7 types (connectance 11.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
66
Connectance
0.111
Patrimoniales
3
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

40km

Max discharge

245,9m³/s

Max Strahler

6

Segments matched

18

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