HydroLAKES lake · #157130
Grässjön
Surface area
4,58km²
Avg depth
12,6m
Volume
57,51km³
Shoreline
13,1km
Administrative coverage
1 dept-equivalent regions (GADM L2)
- HagforsVärmland · Sweden4.60 km²100.0% of lake
4 intersecting protected areas
Brattforsheden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.53 km² overlap
Brattforsheden
IUCN VNatura 2000 SCI
0.53 km² overlap
2002222 Brattforsheden
IUCN VNature Conservation Area
0.34 km² overlap
2031509 Svartån
IUCN IaNature Reserve
0.19 km² overlap
Computed live · HydroLAKES × GADM × WDPA · cached after first hit.
Species present
613 distinct species · 3 295 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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).
Indicateurs du tissu écologique
Tissu écologique de Grässjön : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 6 types (connectance 15.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Lake statistics (HydroLAKES)
Surface
4,58km²
Avg depth
12,6m
Volume
57,510km³
Watershed
327km²
Shoreline
13,1km
Shore dev. idx
1,73
Residence time
192days
Elevation
127m
HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.