Ontologia

Ruisseau· 3 segments

Husaån

Crosses 2 administrative regions : Vallentuna, Österåker

ruisseau

Total length

9km

Max discharge

3m³/s

Max Strahler

2

Segments matched

3

River geography2 admin regions · 0 communes

Parent watershed

hybas-2080031720423 km²

2 administrative regions crossed (GADM L2)

10 intersecting protected areas

  • 2022549 Näsudden

    IUCN Not Assigned

    Nature Reserve

  • SK 578-2003

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 503-2004

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 690-2003

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • SK 415-2003

    IUCN Ia

    Habitat Protection Area

  • Sjökullarna

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Sjökullarna

    IUCN Not Assigned

    Natura 2000 SCI

  • SK 689-2003

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

  • Brottby allé

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

1 more protected areas

1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 638 distinct species · 15 932 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 Husaån : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 6 types (connectance 16.6%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
93
Connectance
0.166
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

9km

Max discharge

3,0m³/s

Max Strahler

2

Segments matched

3

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