Ontologia

Rivière· 12 segments

Långan

Crosses 2 administrative regions : Krokom, Östersund

rivière

Total length

38km

Max discharge

244,3m³/s

Max Strahler

6

Segments matched

12

River geography2 admin regions · 0 communes

Parent watershed

hybas-20801840702148 km²

2 administrative regions crossed (GADM L2)

  • Krokom
    Jämtland · Sweden
    30.0 km
    in this dpt
  • Östersund
    Jämtland · Sweden
    20.1 km
    in this dpt

14 intersecting protected areas

5 more protected areas

1 page = 1 named river (aggregation of 12 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

572 distinct species · 5 196 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Långan : 25 espèces reliées par 91 interactions GloBI sur 5 types (connectance 12.3%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
91
Connectance
0.123
Patrimoniales
0
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

38km

Max discharge

244,3m³/s

Max Strahler

6

Segments matched

12

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