Ontologia

HydroLAKES lake · #12903

Femsjøen

Natural lakeNorwayEurope 80 m

Surface area

10,73km²

Avg depth

16,1m

Volume

172,58km³

Shoreline

33,2km

Administrative coverage

Parent watershed

hybas-20800334701310 km² · upstream 1310 km²

1 dept-equivalent regions (GADM L2)

  • Halden
    Ãstfold · Norway
    10.79 km²
    100.0% of lake

1 intersecting protected areas

  • Lilleøya

    IUCN Ia

    Nature Reserve

    0.02 km² overlap

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

Species present

1 520 distinct species · 11 090 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 090 obs · 1 cellules
Obs. / cellule
≥ 11 090
11 090–11 089
11 090–11 089
11 090–11 089
< 11 090

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 Femsjøen : 21 espèces reliées par 94 interactions GloBI sur 5 types (connectance 17.8%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
94
Connectance
0.178
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

10,73km²

Avg depth

16,1m

Volume

172,580km³

Watershed

315km²

Shoreline

33,2km

Shore dev. idx

2,86

Residence time

398days

Elevation

80m

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