NNN-ZH
IUCN Not AssignedNature Reserves owned by professional nature management organizations · 2014
450 km²
Municipality · NLD
Katwijk
Netherlands
CfbTemperate, no dry season, warm summer(100 %)
Species observed
6 149
Observations
324 880
Area
26,3km²
Ecological tissue
Sample of 45 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).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Katwijk : 36 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 125 interactions GloBI sur 6 types (connectance 12.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
46
Interactions affichées
125
Connectance
0.121
Patrimoniales
3
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
6 149 distinct species · 324 880 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,4°C
Annual rain
958mm
Warmest m°
19,9°C
Coldest m°
1,9°C
Elevation: 3 m on average (min -1 m, max 11 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,4°C
Annual rain
958mm
Warmest month
19,9°C
Coldest month
1,9°C
Mean alt.
3m
Min
-1m
Max
11m
Std. dev.
4m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,6
Org. C
48,9g/kg
Clay
15,8%
Sand
53,0%
Silt
31,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,5
Org. C
58,4g/kg
Clay
14,8%
Sand
54,5%
Silt
30,7%
5–15 cm
pH H₂O
6,6
Org. C
43,3g/kg
Clay
14,8%
Sand
53,9%
Silt
31,2%
15–30 cm
pH H₂O
6,6
Org. C
45,1g/kg
Clay
17,7%
Sand
50,5%
Silt
31,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest8.2%
Crops13.4%
Built-up10.4%
Bare soil1.6%
Other (grassland, water…)66.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 1 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
9,0km
Lake surface here
0,46km²
Basins crossed
3
Max stream order
4
Max drainage
1 905km²
Discharge in basins
0,4m³/s
Mean precip.
794mm/an
Mean T°
9,4°C
Moisture idx
0,20
Max snow
11%
Mean runoff
490mm/an
Mean elev. (basins)
-1m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
13hab/km²
Night light
16,4nW
Built-up
1 043,8%
Pesticides
58,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN IV · 2IUCN Not Reported · 2IUCN Not Assigned · 1🌊 Marine · 1
Meijendel & Berkheide
IUCN IVNature Conservation Act · 2013
29 km²
Meijendel & Berkheide
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2013
29 km²
Coepelduynen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2010
2 km²
Coepelduynen
IUCN IVNature Conservation Act · 2010
2 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN