Ontologia

Municipality · NLD

Alphen-Chaam

Netherlands

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

Species observed

7 370

Observations

343 823

Area

95,4km²

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-Chaam : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 105 interactions GloBI sur 6 types (connectance 12.2%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
105
Connectance
0.122
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

7 370 distinct species · 343 823 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

343 823 obs · 4 cellules
Obs. / cellule
≥ 147 494
147 494–147 493
114 551–147 493
114 551–114 550
< 114 551

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

Climate

Mean T°

10,4°C

Annual rain

881mm

Warmest m°

22,2°C

Coldest m°

0,5°C

Elevation: 15 m on average (min 4 m, max 26 m)

Bioclimatic detailsExpert
Annual mean temp.
10,4°C
Annual rain
881mm
Warmest month
22,2°C
Coldest month
0,5°C
Mean alt.
15m
Min
4m
Max
26m
Std. dev.
6m
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

5,3

Org. C

42,5g/kg

Clay

11,3%

Sand

71,4%

Silt

17,2%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
65,0g/kg
Clay
14,3%
Sand
68,0%
Silt
17,7%
5–15 cm
pH H₂O
5,5
Org. C
32,0g/kg
Clay
9,6%
Sand
72,7%
Silt
17,8%
15–30 cm
pH H₂O
5,4
Org. C
30,5g/kg
Clay
10,1%
Sand
73,7%
Silt
16,3%

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

Land cover

Forest30.2%
Crops36.5%
Built-up1.5%
Bare soil0.5%
Other (grassland, water…)31.3%

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

Hydrology3 basins · 1 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

26,3km

Lake surface here

0,01km²

Basins crossed

3

Max stream order

4

Max drainage

32 771km²

Discharge in basins

9,1m³/s

Mean precip.

791mm/an

Mean T°

9,7°C

Moisture idx

0,12

Max snow

12%

Mean runoff

452mm/an

Mean elev. (basins)

11m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

1,6nW

Built-up

149,5%

Pesticides

65,9kg/km²

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

Protected areas5

IUCN Not Assigned · 2IUCN VI · 2IUCN Not Reported · 1🌊 Marine · 1

NNN-NB

IUCN Not Assigned

Nature Reserves owned by professional nature management organizations · 2015

1 317 km²

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