Ontologia

Ruisseau· 10 segments

Öjån

Crosses 2 administrative regions : Krokom, Strömsund

ruisseau

Total length

61km

Max discharge

4,4m³/s

Max Strahler

2

Segments matched

10

River geography2 admin regions · 0 communes

Parent watershed

hybas-20801860502734 km²

2 administrative regions crossed (GADM L2)

  • Strömsund
    Jämtland · Sweden
    65.7 km
    in this dpt
  • Krokom
    Jämtland · Sweden
    4.0 km
    in this dpt

6 intersecting protected areas

  • Ammerån

    IUCN Not Assigned

    Natura 2000 SCI

  • Ammerån

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Sikåsvågarna

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

  • SK 141-2008

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • Grenås Öjån

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Grenås Öjån

    IUCN Not Assigned

    Natura 2000 SCI

1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

219 distinct species · 444 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 32 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 Öjån : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 5 types (connectance 7.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
40
Connectance
0.071
Patrimoniales
1
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

61km

Max discharge

4,4m³/s

Max Strahler

2

Segments matched

10

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