Rivière· 10 segments
Demer
Crosses 2 administrative regions : Limburg, Vlaams Brabant
Total length
87km
Max discharge
28,6m³/s
Max Strahler
5
Segments matched
10
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- Vlaams BrabantVlaanderen · Belgium38.0 kmin this dpt
- LimburgVlaanderen · Belgium14.8 kmin this dpt
30 intersecting protected areas
De Demervallei
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Demervallei
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
De Demervallei ten oosten van Aarschot
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
De Demervallei ten westen van Aarschot
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
Jekervallei en bovenloop van de Demervallei
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
NBP-AN-21-0103 type 4
IUCN IVNature management plan type 4 (Flemish Region)
Het Schulensbroek
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
NBP-LI-20-0008 type 4
IUCN IVNature management plan type 4 (Flemish Region)
De Bovenloop Demer en Winterbeek
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
21 more protected areassorted by area
De Broekelei-Zegbroek-Tremelo
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
463 Afbakening van de gebieden van de natuurlijke en agrarische structuur regio Haspengouw-Voeren -
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
Webbekomsbroek-Borchbeemden
IUCN IVNature management plan type 4 (Flemish Region)
NBP-VB-18-0001 type 4
IUCN IVNature management plan type 4 (Flemish Region)
NBP-LI-21-0108 type 2
IUCN VINature management plan type 2 (Flemish Region)
Het Wijgmaalbroek - Kwellenberg - Gevel
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
De Middenloop Demer
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
Het Rot- , Gorenbroek en Diesters Broek
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
NBP-LI-22-0118 type 2
IUCN VINature management plan type 2 (Flemish Region)
NBP-LI-20-0176 type 2
IUCN VINature management plan type 2 (Flemish Region)
Nature management plan type 2 (Flemish Region)
Dassenaarde
IUCN IVNature management plan type 4 (Flemish Region)
NBP-VB-20-0137 type 4
IUCN IVNature management plan type 4 (Flemish Region)
NBP-VB-23-0014 type 2
IUCN VINature management plan type 2 (Flemish Region)
NBP-VB-21-0348 type 2
IUCN VINature management plan type 2 (Flemish Region)
V-100 type 4
IUCN IVNature management plan type 4 (Flemish Region)
NBP-VB-21-0315 type 4
IUCN IVNature management plan type 4 (Flemish Region)
Nature management plan type 4 (Flemish Region)
Molenheide
IUCN IVNature management plan type 4 (Flemish Region)
NBP/LI/20/0236 type 4
IUCN IVNature management plan type 4 (Flemish Region)
NBP-VB-20-0218 type 4
IUCN IVNature management plan type 4 (Flemish Region)
1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
2 437 distinct species · 90 403 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Demer : 33 espèces + 7 bulles famille, 96 interactions GloBI documentées sur 4 types (connectance 12.3%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
87km
Max discharge
28,6m³/s
Max Strahler
5
Segments matched
10
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.