Ontologia

HydroLAKES lake · #157682

Tärnan

Natural lakeSwedenEurope 49 m

Surface area

1,05km²

Avg depth

5,8m

Volume

6,07km³

Shoreline

11,9km

Administrative coverage

Parent watershed

hybas-20800316302528 km² · upstream 2528 km²

1 dept-equivalent regions (GADM L2)

  • Vallentuna
    Stockholm · Sweden
    1.06 km²
    100.0% of lake

3 intersecting protected areas

  • Tärnholm

    IUCN Not Assigned

    Natura 2000 SCI

    0.00 km² overlap

  • Tärnholm

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.00 km² overlap

  • 2001073 Exerman-Hersby

    IUCN Ia

    Nature Reserve

    0.00 km² overlap

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

Species present

2 491 distinct species · 21 606 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

21 606 obs · 1 cellules
Obs. / cellule
≥ 21 606
21 606–21 605
21 606–21 605
21 606–21 605
< 21 606

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

Ecological tissue

Sample of 31 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 Tärnan : 25 espèces reliées par 47 interactions GloBI sur 5 types (connectance 10.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
47
Connectance
0.101
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

1,05km²

Avg depth

5,8m

Volume

6,070km³

Watershed

16km²

Shoreline

11,9km

Shore dev. idx

3,26

Residence time

585days

Elevation

49m

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