Ontologia

HydroLAKES lake · #157565

Hjälstaviken

Natural lakeSwedenEurope 4 m

Surface area

1,41km²

Avg depth

1,4m

Volume

1,92km³

Shoreline

6km

Administrative coverage

Parent watershed

hybas-20802421502206 km² · upstream 18124 km²

1 dept-equivalent regions (GADM L2)

  • Enköping
    Uppsala · Sweden
    1.42 km²
    100.0% of lake

6 intersecting protected areas

  • Hjälstaviken

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.42 km² overlap

  • Hjälstaviken

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.42 km² overlap

  • Hjälstaviken

    IUCN V

    Natura 2000 SPA

    1.42 km² overlap

  • Hjälstaviken

    IUCN V

    Natura 2000 SCI

    1.42 km² overlap

  • Hjälstaviken

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    1.42 km² overlap

  • 2002048 Hjälstaviken

    IUCN V

    Nature Reserve

    1.42 km² overlap

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

Species present

3 975 distinct species · 988 907 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

988 907 obs · 1 cellules
Obs. / cellule
≥ 988 907
988 907–988 906
988 907–988 906
988 907–988 906
< 988 907

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

Ecological tissue

Sample of 23 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 Hjälstaviken : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 2 types (connectance 17.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
53
Connectance
0.177
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

1,41km²

Avg depth

1,4m

Volume

1,920km³

Watershed

80km²

Shoreline

6,0km

Shore dev. idx

1,42

Residence time

45days

Elevation

4m

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