Ontologia

Commune · CMR

Yaoundé 4

Cameroon

AwTropical, savannah(100 %)

Species observed

128

Observations

1 058

Area

53,2km²

Ecological tissue

Sample of 28 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 Yaoundé 4 : 23 espèces reliées par 27 interactions GloBI sur 3 types (connectance 7.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
27
Connectance
0.071
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

128 distinct species · 1 058 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 058 obs · 1 cellules
Obs. / cellule
≥ 1 058
1 058–1 057
1 058–1 057
1 058–1 057
< 1 058

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

Climate

Mean T°

23,1°C

Annual rain

1 700mm

Warmest m°

29,8°C

Coldest m°

19,7°C

Elevation: 704 m on average (min 683 m, max 732 m)

Bioclimatic detailsExpert
Annual mean temp.
23,1°C
Annual rain
1 700mm
Warmest month
29,8°C
Coldest month
19,7°C
Mean alt.
704m
Min
683m
Max
732m
Std. dev.
14m
Köppen-Geiger (dominant)
AwTropical, savannah(100 %)Tropical

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

23,1g/kg

Clay

42,8%

Sand

46,8%

Silt

10,4%

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

Dominant lithology: mtGLiMaggregated to Mfoundi

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
35,1g/kg
Clay
38,5%
Sand
50,3%
Silt
11,3%
5–15 cm
pH H₂O
5,3
Org. C
22,2g/kg
Clay
41,5%
Sand
47,7%
Silt
10,7%
15–30 cm
pH H₂O
5,3
Org. C
12,1g/kg
Clay
48,3%
Sand
42,3%
Silt
9,4%

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

Land cover

Forest8.5%
Crops2.8%
Built-up22.7%
Bare soil0.7%
Other (grassland, water…)65.3%

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

Hydrology2 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

19,8km

Basins crossed

2

Max stream order

3

Max drainage

1 280km²

Discharge in basins

1,0m³/s

Mean precip.

1 668mm/an

Mean T°

23,7°C

Moisture idx

0,08

Mean runoff

589mm/an

Mean elev. (basins)

727m

Watersheds crossing here

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

Human pressure

Pop. density

198hab/km²

Night light

10,7nW

Built-up

2 266,3%

Pesticides

1,5kg/km²

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