Ontologia

Commune · CMR

Douala 1

Cameroon

AmTropical, monsoon(100 %)

Species observed

901

Observations

6 248

Area

108km²

Ecological tissue

Sample of 38 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 1 : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 4.8%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
34
Connectance
0.048
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

901 distinct species · 6 248 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 248 obs · 4 cellules
Obs. / cellule
≥ 2 534
2 534–2 533
1 964–2 533
1 964–1 963
< 1 964

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

Climate

Mean T°

26,1°C

Annual rain

3 169mm

Warmest m°

30,4°C

Coldest m°

22,9°C

Elevation: 4 m on average (min -6 m, max 17 m)

Bioclimatic detailsExpert
Annual mean temp.
26,1°C
Annual rain
3 169mm
Warmest month
30,4°C
Coldest month
22,9°C
Mean alt.
4m
Min
-6m
Max
17m
Std. dev.
5m
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

5,2

Org. C

48,6g/kg

Clay

34,0%

Sand

39,2%

Silt

26,8%

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
5,2
Org. C
53,4g/kg
Clay
31,5%
Sand
40,9%
Silt
27,6%
5–15 cm
pH H₂O
5,1
Org. C
49,2g/kg
Clay
32,9%
Sand
40,1%
Silt
27,0%
15–30 cm
pH H₂O
5,1
Org. C
43,2g/kg
Clay
37,5%
Sand
36,6%
Silt
25,9%

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

Land cover

Forest33.2%
Crops1.1%
Built-up11.3%
Bare soil0.3%
Other (grassland, water…)54.1%

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

Hydrology3 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

12,4km

Basins crossed

3

Max stream order

6

Max drainage

12 236km²

Discharge in basins

33,3m³/s

Mean precip.

3 448mm/an

Mean T°

26,3°C

Moisture idx

0,57

Mean runoff

1 967mm/an

Mean elev. (basins)

29m

Watersheds crossing here

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

Human pressure

Pop. density

46hab/km²

Night light

8,9nW

Built-up

1 131,9%

Pesticides

1,3kg/km²

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

Protected areas1

IUCN II · 1🌊 Marine · 1

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