Special Protection Area (Birds Directive) · bel
De Demervallei
- Area
- 65 km²
- IUCN cat.
- Not Reported
- Year
- 1988
Overview
- Designation
- Special Protection Area (Birds Directive)
- Established
- 1988
- Managing authority
- See European Environment Agency Geospatial Data Catalogue for more information - https://sdi.eea.europa.eu/catalogue/srv/api/records/be2142b0-7dc4-42e3-afac-f7cc5f1a9ac6
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
4 153 distinct species · 359 409 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 De Demervallei : 29 espèces + 5 bulles famille, 51 interactions GloBI documentées sur 5 types (connectance 9.1%, filtre Serrano α=0.2). Les 5 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).
Hydrology4 basins · 1 lakes · 13 rivers
Hydrology metrics for this exact territory
Stream length here
46,1km
Lake surface here
0,76km²
Basins crossed
4
Max stream order
5
Max drainage
2 329km²
Discharge in basins
2,1m³/s
Mean precip.
806mm/an
Mean T°
9,8°C
Moisture idx
0,09
Max snow
12%
Mean runoff
400mm/an
Mean elev. (basins)
46m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (13, ord ≥ 4)
- Demerord 5len here21.00 km40%total53 km
- Zwartwaterord 3len here4.53 km100%total5 km
- Laakord 3len here4.29 km53%total8 km
- Vloedgrachtord 2len here3.85 km33%total12 km
- Herkord 3len here3.09 km14%total22 km
- Zwarte Beekord 5len here2.95 km100%total3 km
- Leigrachtord 5len here1.60 km28%total6 km
- Motteord 2len here1.51 km57%total3 km
- Begijnebeekord 2len here1.35 km8%total18 km
- Velpeord 1len here0.73 km2%total34 km
- Hulpeord 1len here0.44 km100%total0 km
- Geteord 4len here0.43 km4%total12 km
1 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 50.97115, 5.19303
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.