Ontologia

Subdivision · DEU

Troisdorf

Germany

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

Species observed

3 454

Observations

40 354

Area

61,7km²

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 Troisdorf : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 89 interactions GloBI sur 6 types (connectance 12.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
89
Connectance
0.120
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

3 454 distinct species · 40 354 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

40 354 obs · 2 cellules
Obs. / cellule
≥ 27 196
27 196–27 195
27 196–27 195
27 196–27 195
< 27 196

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

871mm

Warmest m°

22,9°C

Coldest m°

-0,1°C

Elevation: 71 m on average (min 49 m, max 105 m)

Bioclimatic detailsExpert
Annual mean temp.
10,4°C
Annual rain
871mm
Warmest month
22,9°C
Coldest month
-0,1°C
Mean alt.
71m
Min
49m
Max
105m
Std. dev.
19m
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

6,0

Org. C

32,1g/kg

Clay

22,8%

Sand

36,4%

Silt

40,8%

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

Dominant lithology: suGLiMaggregated to Rhein-Sieg-Kreis

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
53,1g/kg
Clay
24,0%
Sand
35,4%
Silt
40,6%
5–15 cm
pH H₂O
6,0
Org. C
25,7g/kg
Clay
22,0%
Sand
36,1%
Silt
41,9%
15–30 cm
pH H₂O
6,0
Org. C
17,7g/kg
Clay
22,5%
Sand
37,6%
Silt
40,0%

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

Land cover

Forest30.7%
Crops21.5%
Built-up5.7%
Bare soil0.6%
Other (grassland, water…)41.6%

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

Hydrology4 basins · 6 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

10,5km

Lake surface here

0,68km²

Basins crossed

4

Max stream order

4

Max drainage

145 503km²

Discharge in basins

46,7m³/s

Mean precip.

841mm/an

Mean T°

9,3°C

Moisture idx

0,12

Max snow

19%

Mean runoff

302mm/an

Mean elev. (basins)

177m

Watersheds crossing here

Lakes (6, top by area)

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

Human pressure

Pop. density

7hab/km²

Night light

7,0nW

Built-up

570,9%

Pesticides

23,9kg/km²

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

Protected areas22

IUCN IV · 9IUCN V · 8IUCN Not Reported · 5

Wahner Heide

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2008

29 km²

Complete list

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