NNN-ZH
IUCN Not AssignedNature Reserves owned by professional nature management organizations · 2014
450 km²
Municipality · NLD
Leiden
Netherlands
CfbTemperate, no dry season, warm summer(100 %)
Species observed
7 649
Observations
614 250
Area
23,2km²
Ecological tissue
Sample of 35 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 Leiden : 27 espèces reliées par 100 interactions GloBI sur 5 types (connectance 15.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
37
Interactions affichées
100
Connectance
0.150
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
7 649 distinct species · 614 250 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,3°C
Annual rain
940mm
Warmest m°
20,3°C
Coldest m°
1,6°C
Elevation: 0 m on average (min -2 m, max 2 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,3°C
Annual rain
940mm
Warmest month
20,3°C
Coldest month
1,6°C
Mean alt.
0m
Min
-2m
Max
2m
Std. dev.
1m
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
52,6g/kg
Clay
14,6%
Sand
50,3%
Silt
35,1%
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
64,8g/kg
Clay
13,4%
Sand
52,3%
Silt
34,3%
5–15 cm
pH H₂O
6,6
Org. C
44,4g/kg
Clay
13,6%
Sand
51,3%
Silt
35,1%
15–30 cm
pH H₂O
6,7
Org. C
48,6g/kg
Clay
16,8%
Sand
47,4%
Silt
35,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest7.4%
Crops6.5%
Built-up12.1%
Bare soil0.3%
Other (grassland, water…)73.7%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
7,4km
Basins crossed
2
Max stream order
4
Max drainage
1 025km²
Discharge in basins
0,3m³/s
Mean precip.
793mm/an
Mean T°
9,4°C
Moisture idx
0,20
Max snow
9%
Mean runoff
490mm/an
Mean elev. (basins)
-2m
Watersheds crossing here
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
27hab/km²
Night light
21,1nW
Built-up
1 209,9%
Pesticides
55,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Assigned · 1🌊 Marine · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN