Ontologia

HydroLAKES lake · #158448

Bjälken

Natural lakeSwedenEurope 38 m

Surface area

1,47km²

Avg depth

4m

Volume

5,9km³

Shoreline

8,1km

Administrative coverage

Parent watershed

hybas-20800319003892 km² · upstream 3892 km²

1 dept-equivalent regions (GADM L2)

  • Katrineholm
    Södermanland · Sweden
    1.47 km²
    100.0% of lake

3 intersecting protected areas

  • Svinnäset

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.06 km² overlap

  • Svinnäset

    IUCN Not Assigned

    Natura 2000 SCI

    0.06 km² overlap

  • SK 251-2001

    IUCN Ia

    Habitat Protection Area

    0.01 km² overlap

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

Species present

1 368 distinct species · 20 738 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

20 738 obs · 1 cellules
Obs. / cellule
≥ 20 738
20 738–20 737
20 738–20 737
20 738–20 737
< 20 738

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

Ecological tissue

Sample of 37 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 Bjälken : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 5 types (connectance 12.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
86
Connectance
0.122
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

1,47km²

Avg depth

4,0m

Volume

5,900km³

Watershed

1 049km²

Shoreline

8,1km

Shore dev. idx

1,88

Residence time

12days

Elevation

38m

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