Ruisseau
Risby Å
Crosses 4 administrative regions : Albertslund, Ballerup, Egedal, Høje Taastrup
Total length
8km
Max discharge
0,4m³/s
Max Strahler
1
Segments matched
1
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- Høje TaastrupHovedstaden · Denmark3.2 kmin this dpt
- EgedalHovedstaden · Denmark1.8 kmin this dpt
- BallerupHovedstaden · Denmark1.3 kmin this dpt
- AlbertslundHovedstaden · Denmark1.2 kmin this dpt
12 intersecting protected areas
Egedal Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Høje-Taastrup Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Ballerup Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Egedal Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Albertslund Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Vasby Mose og Sengeløse Mose
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Tysmosen
IUCN VProtected by conservation order, excl. Church surroundings
Høje-Taastrup Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Sengeløse Mose
IUCN IVProtected by conservation order, excl. Church surroundings
3 more protected areassorted by area
Ballerup Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
Råmosen
IUCN IVProtected by conservation order, excl. Church surroundings
Albertslund Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
3 334 distinct species · 180 131 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Risby Å : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 6 types (connectance 17.9%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
8km
Max discharge
0,4m³/s
Max Strahler
1
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.