HydroLAKES lake · #158280
Holvann
Surface area
1,17km²
Avg depth
5,7m
Volume
6,69km³
Shoreline
9,9km
Administrative coverage
1 dept-equivalent regions (GADM L2)
- HaldenÃstfold · Norway1.18 km²100.0% of lake
Computed live · HydroLAKES × GADM × WDPA · cached after first hit.
Species present
1 145 distinct species · 9 993 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Holvann : 17 espèces reliées par 71 interactions GloBI sur 5 types (connectance 16.3%, filtre Serrano α=0.2). 13 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
1,17km²
Avg depth
5,7m
Volume
6,690km³
Watershed
8km²
Shoreline
9,9km
Shore dev. idx
2,58
Residence time
561days
Elevation
167m
HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.