HydroLAKES lake · #165051
Alfsee
Surface area
2,05km²
Avg depth
1,1m
Volume
2,18km³
Shoreline
8,2km
Administrative coverage
1 dept-equivalent regions (GADM L2)
- OsnabrückNiedersachsen · Germany2.06 km²100.0% of lake
2 intersecting protected areas
Nature Reserve
2.06 km² overlap
Alfsee
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.95 km² overlap
Computed live · HydroLAKES × GADM × WDPA · cached after first hit.
Species present
920 distinct species · 5 514 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Alfsee : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 88 interactions GloBI sur 6 types (connectance 12.5%, filtre Serrano α=0.2). 9 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
2,05km²
Avg depth
1,1m
Volume
2,180km³
Watershed
66km²
Shoreline
8,2km
Shore dev. idx
1,61
Residence time
26days
Elevation
36m
HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.