Ontologia

HydroLAKES lake · #157313

Hällsjön

Natural lakeSwedenEurope 61 m

Surface area

1,71km²

Avg depth

3,7m

Volume

6,3km³

Shoreline

9,1km

Administrative coverage

Parent watershed

hybas-20802407501684 km² · upstream 14747 km²

2 dept-equivalent regions (GADM L2)

  • Västerås
    Västmanland · Sweden
    0.97 km²
    56.7% of lake
  • Sala
    Västmanland · Sweden
    0.75 km²
    43.3% of lake

2 intersecting protected areas

  • SK 139-2016

    IUCN Ia

    Habitat Protection Area

    0.01 km² overlap

  • SK 226-2020

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.00 km² overlap

Computed live · HydroLAKES × GADM × WDPA · cached after first hit.

Species present

1 038 distinct species · 13 267 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

13 267 obs · 1 cellules
Obs. / cellule
≥ 13 267
13 267–13 266
13 267–13 266
13 267–13 266
< 13 267

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 26 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 Hällsjön : 16 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 51 interactions GloBI sur 3 types (connectance 14.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
51
Connectance
0.145
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Lake statistics (HydroLAKES)

Surface

1,71km²

Avg depth

3,7m

Volume

6,300km³

Watershed

484km²

Shoreline

9,1km

Shore dev. idx

1,96

Residence time

18days

Elevation

61m

HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.