Ontologia

Commune · CMR

Douala 3

Cameroon

AmTropical, monsoon(100 %)

Species observed

292

Observations

2 508

Area

83,9km²

Ecological tissue

Sample of 19 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 Douala 3 : 18 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 12 interactions GloBI sur 5 types (connectance 7.0%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
19
Interactions affichées
12
Connectance
0.070
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

292 distinct species · 2 508 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 508 obs · 2 cellules
Obs. / cellule
≥ 2 478
2 478–2 477
2 478–2 477
2 478–2 477
< 2 478

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

Climate

Mean T°

25,9°C

Annual rain

3 178mm

Warmest m°

30,7°C

Coldest m°

22,6°C

Elevation: 23 m on average (min 4 m, max 43 m)

Bioclimatic detailsExpert
Annual mean temp.
25,9°C
Annual rain
3 178mm
Warmest month
30,7°C
Coldest month
22,6°C
Mean alt.
23m
Min
4m
Max
43m
Std. dev.
9m
Köppen-Geiger (dominant)
AmTropical, monsoon(100 %)Tropical

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

5,1

Org. C

35,9g/kg

Clay

32,6%

Sand

44,4%

Silt

23,0%

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

Dominant lithology: ssGLiMaggregated to Wouri

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
45,1g/kg
Clay
30,5%
Sand
45,8%
Silt
23,7%
5–15 cm
pH H₂O
5,1
Org. C
31,4g/kg
Clay
32,0%
Sand
45,1%
Silt
23,0%
15–30 cm
pH H₂O
5,1
Org. C
31,1g/kg
Clay
35,3%
Sand
42,3%
Silt
22,4%

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

Land cover

Forest12.2%
Crops9.9%
Built-up25.5%
Bare soil0.8%
Other (grassland, water…)51.6%

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

Hydrology3 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

4,2km

Basins crossed

3

Max stream order

5

Max drainage

12 236km²

Discharge in basins

28,7m³/s

Mean precip.

3 337mm/an

Mean T°

26,4°C

Moisture idx

0,55

Mean runoff

1 913mm/an

Mean elev. (basins)

36m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

135hab/km²

Night light

9,5nW

Built-up

2 551,4%

Pesticides

1,3kg/km²

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