Ruisseau· 2 segments
Jeker
Crosses 3 administrative regions : Limburg, Liège, Maastricht
Total length
23km
Max discharge
5,2m³/s
Max Strahler
3
Segments matched
2
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- MaastrichtLimburg · Netherlands3.9 kmin this dpt
- LiègeWallonie · Belgium3.6 kmin this dpt
- LimburgVlaanderen · Belgium3.2 kmin this dpt
18 intersecting protected areas
NNN-LI
IUCN Not AssignedNature Reserves owned by professional nature management organizations
Jekervallei en bovenloop van de Demervallei
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Basse vallée du Geer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Sint Pietersberg & Jekerdal
IUCN IVNature Conservation Act
Sint Pietersberg & Jekerdal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Montagne Saint-Pierre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Montagne Saint-Pierre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
De Kevie en Kleinmeers
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
Het Albertkanaal en Plateau van Caestert
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
9 more protected areassorted by area
NBP-LI-18-0018 type 3
IUCN IVNature management plan type 3 (Flemish Region)
NBP/LI/20/0274 type 4
IUCN IVNature management plan type 4 (Flemish Region)
Plateau van Caestert met hellingbossen en mergelgrotten
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
NBP-LI-21-0004 type 4
IUCN IVNature management plan type 4 (Flemish Region)
Basse vallée du Geer
IUCN IVCertified Nature Reserve (Walloon Region)
Heyoulle
IUCN IVCertified Nature Reserve (Walloon Region)
Brouhire d\'Emael
IUCN IVCertified Nature Reserve (Walloon Region)
NBP-LI-21-0004 type 3
IUCN IVNature management plan type 3 (Flemish Region)
Thier à la Tombe
IUCN IVCertified Nature Reserve (Walloon Region)
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
8 511 distinct species · 667 986 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 Jeker : 26 espèces reliées par 131 interactions GloBI sur 5 types (connectance 23.4%, filtre Serrano α=0.2). 8 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
23km
Max discharge
5,2m³/s
Max Strahler
3
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.