Ontologia

Ruisseau

Loån

Crosses 3 administrative regions : Norrtälje, Vallentuna, Österåker

ruisseau

Total length

39km

Max discharge

0,5m³/s

Max Strahler

2

Segments matched

1

River geography3 admin regions · 0 communes

Parent watershed

hybas-20800316302528 km²

3 administrative regions crossed (GADM L2)

8 intersecting protected areas

  • SK 518-2007

    IUCN Ia

    Habitat Protection Area

  • Losjön

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Losjön

    IUCN Not Assigned

    Natura 2000 SCI

  • SK 546-2002

    IUCN Ia

    Habitat Protection Area

  • Blötviken

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Blötviken

    IUCN Not Assigned

    Natura 2000 SCI

  • SK 302-2018

    IUCN Ia

    Habitat Protection Area

  • SK 303-2018

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

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

Species present

1 549 distinct species · 15 118 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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 Loån : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 4 types (connectance 9.8%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
65
Connectance
0.098
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

39km

Max discharge

0,5m³/s

Max Strahler

2

Segments matched

1

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