Ontologia

Municipality · NLD

Alphen aan den Rijn

Netherlands

CfbTemperate, no dry season, warm summer(100 %)

Species observed

5 019

Observations

786 339

Area

133,1km²

Ecological tissue

Sample of 42 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 Alphen aan den Rijn : 25 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 138 interactions GloBI sur 6 types (connectance 16.0%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
138
Connectance
0.160
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

5 019 distinct species · 786 339 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

786 339 obs · 4 cellules
Obs. / cellule
≥ 274 019
274 019–274 018
247 696–274 018
247 696–247 695
< 247 696

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

10,2°C

Annual rain

926mm

Warmest m°

20,8°C

Coldest m°

1,1°C

Elevation: -3 m on average (min -6 m, max -0 m)

Bioclimatic detailsExpert
Annual mean temp.
10,2°C
Annual rain
926mm
Warmest month
20,8°C
Coldest month
1,1°C
Mean alt.
-3m
Min
-6m
Max
-0m
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

76,4g/kg

Clay

30,2%

Sand

30,8%

Silt

39,0%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
83,3g/kg
Clay
28,3%
Sand
32,9%
Silt
38,9%
5–15 cm
pH H₂O
6,7
Org. C
61,3g/kg
Clay
29,6%
Sand
31,7%
Silt
38,8%
15–30 cm
pH H₂O
6,7
Org. C
84,5g/kg
Clay
32,6%
Sand
28,0%
Silt
39,4%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest9.0%
Crops31.9%
Built-up4.6%
Bare soil0.6%
Other (grassland, water…)53.9%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology3 basins · 1 lakes · 8 rivers

Hydrology metrics for this exact territory

Stream length here

29,7km

Lake surface here

0,67km²

Basins crossed

3

Max stream order

3

Max drainage

161 130km²

Discharge in basins

180,5m³/s

Mean precip.

795mm/an

Mean T°

9,5°C

Moisture idx

0,19

Max snow

12%

Mean runoff

486mm/an

Mean elev. (basins)

-2m

Watersheds crossing here

Lakes (1, top by area)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

4hab/km²

Night light

6,5nW

Built-up

459,2%

Pesticides

54,8kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas6

IUCN Not Reported · 3IUCN IV · 2IUCN Not Assigned · 1🌊 Marine · 1

NNN-ZH

IUCN Not Assigned

Nature Reserves owned by professional nature management organizations · 2014

450 km²

De Wilck

IUCN IV

Nature Conservation Act · 2000

1 km²

De Wilck

IUCN Not Reported

Special Protection Area (Birds Directive) · 2000

1 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN