Ontologia

HydroLAKES lake · #1160

Hjalmaren

Natural lakeSwedenEurope 24 m

Surface area

474,39km²

Avg depth

17m

Volume

8 077,22km³

Shoreline

387km

Administrative coverage

Parent watershed

hybas-20802450706 km² · upstream 2983 km²

5 dept-equivalent regions (GADM L2)

  • Örebro
    Orebro · Sweden
    199.90 km²
    41.9% of lake
  • Arboga
    Västmanland · Sweden
    103.86 km²
    21.8% of lake
  • Eskilstuna
    Södermanland · Sweden
    85.39 km²
    17.9% of lake
  • Katrineholm
    Södermanland · Sweden
    66.68 km²
    14.0% of lake
  • Vingåker
    Södermanland · Sweden
    21.14 km²
    4.4% of lake

30 intersecting protected areas

21 more protected areas

  • 2001867 Herrfallet

    IUCN Not Assigned

    Nature Reserve

    0.80 km² overlap

  • 2048404 Göksholm

    IUCN IV

    Nature Reserve

    0.40 km² overlap

  • 2023969 Ekeby dreve

    IUCN Not Assigned

    Nature Reserve

    0.22 km² overlap

  • 2014381 Gökriksudden

    IUCN IV

    Nature Reserve

    0.21 km² overlap

  • 2020025 Locknäs

    IUCN Ia

    Nature Reserve

    0.19 km² overlap

  • Gökriksudden

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    0.19 km² overlap

  • Gökriksudden

    IUCN IV

    Natura 2000 SCI

    0.19 km² overlap

  • 2043908 Kuggenäs

    IUCN IV

    Nature Reserve

    0.10 km² overlap

  • 2055342 Lövön

    IUCN Ia

    Nature Reserve

    0.05 km² overlap

  • Lövön

    IUCN Ia

    Natura 2000 SCI

    0.05 km² overlap

  • Lövön

    IUCN Ia

    Natura 2000 SPA

    0.05 km² overlap

  • Lövön

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.05 km² overlap

  • Lövön

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.05 km² overlap

  • Fåran

    IUCN III

    Natura 2000 SCI

    0.04 km² overlap

  • Fåran

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.04 km² overlap

  • 2000206 Fåran

    IUCN III

    Nature Reserve

    0.04 km² overlap

  • SK 1031-2004

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.04 km² overlap

  • SK 245-2002

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.02 km² overlap

  • SK 243-2003

    IUCN Ia

    Habitat Protection Area

    0.02 km² overlap

  • SK 336-2000

    IUCN Ia

    Habitat Protection Area

    0.01 km² overlap

  • Grythem

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.01 km² overlap

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

Species present

6 018 distinct species · 230 835 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

230 835 obs · 19 cellules
Obs. / cellule
≥ 89 469
22 761–89 468
11 376–22 760
5 318–11 375
< 5 318

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

Ecological tissue

Sample of 28 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 Hjalmaren : 19 espèces reliées par 71 interactions GloBI sur 5 types (connectance 17.5%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
71
Connectance
0.175
Patrimoniales
0
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

474,39km²

Avg depth

17,0m

Volume

8 077,220km³

Watershed

3 895km²

Shoreline

387,0km

Shore dev. idx

5,01

Residence time

3 216days

Elevation

24m

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