Voordelta
IUCN IVWetland of International Importance (Ramsar Site) · 2000
923 km²
Municipality · NLD
Netherlands
Species observed
2 870
Observations
80 467
Area
41,9km²
Sample of 36 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).
Tissu écologique de Hellevoetsluis : 25 espèces reliées par 140 interactions GloBI sur 6 types (connectance 18.9%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
2 870 distinct species · 80 467 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
10,5°C
Annual rain
880mm
Warmest m°
20,9°C
Coldest m°
1,4°C
Elevation: -1 m on average (min -5 m, max 3 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
7,2
Org. C
48,3g/kg
Clay
22,3%
Sand
44,6%
Silt
33,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiM
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
9,4km
Lake surface here
0,52km²
Basins crossed
1
Max stream order
2
Max drainage
450km²
Discharge in basins
0,0m³/s
Mean precip.
771mm/an
Mean T°
9,8°C
Moisture idx
0,17
Max snow
8%
Mean runoff
473mm/an
Mean elev. (basins)
-1m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
5hab/km²
Night light
6,1nW
Built-up
410,3%
Pesticides
56,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Wetland of International Importance (Ramsar Site) · 2000
923 km²
Special Areas of Conservation (Habitats Directive) · 2008
835 km²
Special Protection Area (Birds Directive) · 2000
835 km²
Nature Conservation Act · 2008
835 km²
Marine Protected Area (OSPAR) · 2009
819 km²
Nature Reserves owned by professional nature management organizations · 2014
450 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN