Ontologia

Water body · NLD

Zuid Hollandse Meren

Netherlands

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

Species observed

3 576

Observations

264 041

Area

166,5km²

Ecological tissue

Sample of 39 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 Zuid Hollandse Meren : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 137 interactions GloBI sur 5 types (connectance 16.7%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
137
Connectance
0.167
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

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

Species present

3 576 distinct species · 264 041 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

264 041 obs · 3 cellules
Obs. / cellule
≥ 168 117
168 117–168 116
168 117–168 116
59 445–168 116
< 59 445

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

Climate

Mean T°

10,5°C

Annual rain

867mm

Warmest m°

21,2°C

Coldest m°

1,3°C

Elevation: -1 m on average (min -9 m, max 4 m)

Bioclimatic detailsExpert
Annual mean temp.
10,5°C
Annual rain
867mm
Warmest month
21,2°C
Coldest month
1,3°C
Mean alt.
-1m
Min
-9m
Max
4m
Std. dev.
2m
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

7,2

Org. C

50,8g/kg

Clay

24,5%

Sand

40,3%

Silt

35,2%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
68,7g/kg
Clay
24,6%
Sand
40,4%
Silt
35,0%
5–15 cm
pH H₂O
7,2
Org. C
35,2g/kg
Clay
23,5%
Sand
40,7%
Silt
35,8%
15–30 cm
pH H₂O
7,2
Org. C
48,5g/kg
Clay
25,3%
Sand
39,8%
Silt
34,9%

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

Land cover

Forest6.9%
Crops5.3%
Built-up0.1%
Bare soil1.5%
Other (grassland, water…)86.3%

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

Hydrology3 basins · 2 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

0,7km

Lake surface here

134,63km²

Basins crossed

3

Max stream order

2

Max drainage

710km²

Discharge in basins

0,0m³/s

Mean precip.

768mm/an

Mean T°

9,8°C

Moisture idx

0,16

Max snow

10%

Mean runoff

467mm/an

Mean elev. (basins)

-1m

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

Human pressure

Pop. density

0hab/km²

Night light

0,6nW

Built-up

5,3%

Pesticides

55,7kg/km²

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

Protected areas26

IUCN IV · 12IUCN Not Reported · 11IUCN Not Assigned · 3🌊 Marine · 15

NNN-ZE

IUCN Not Assigned

Nature Reserves owned by professional nature management organizations · 2013

1 354 km²

NNN-NB

IUCN Not Assigned

Nature Reserves owned by professional nature management organizations · 2015

1 317 km²

Voordelta

IUCN IV

Wetland of International Importance (Ramsar Site) · 2000

923 km²

Voordelta

IUCN Not Reported

Special Protection Area (Birds Directive) · 2000

835 km²

Voordelta

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2008

835 km²

Voordelta

IUCN IV

Nature Conservation Act · 2008

835 km²

Complete list

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