Ontologia

Commune · CMR

Djoum

Cameroon

AwTropical, savannah(98 %)

Species observed

689

Observations

1 500

Area

5 623,6km²

Ecological tissue

Sample of 22 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 Djoum : 22 espèces reliées par 16 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2).

Espèces affichées
22
Interactions affichées
16
Connectance
0.069
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

689 distinct species · 1 500 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 500 obs · 51 cellules
Obs. / cellule
≥ 322
70–321
25–69
8–24
< 8

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

Climate

Mean T°

23,6°C

Annual rain

1 560mm

Warmest m°

29,7°C

Coldest m°

19,8°C

Elevation: 623 m on average (min 528 m, max 712 m)

Bioclimatic detailsExpert
Annual mean temp.
23,6°C
Annual rain
1 560mm
Warmest month
29,7°C
Coldest month
19,8°C
Mean alt.
623m
Min
528m
Max
712m
Std. dev.
35m
Köppen-Geiger (dominant)
AwTropical, savannah(98 %)Tropical

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

Soil & lithology

pH H₂O

4,9

Org. C

25,3g/kg

Clay

46,0%

Sand

46,4%

Silt

7,6%

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

Dominant lithology: mtGLiMaggregated to Dja et Lobo

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,9
Org. C
49,0g/kg
Clay
41,8%
Sand
49,8%
Silt
8,3%
5–15 cm
pH H₂O
4,9
Org. C
18,3g/kg
Clay
45,3%
Sand
47,1%
Silt
7,7%
15–30 cm
pH H₂O
4,9
Org. C
8,7g/kg
Clay
50,9%
Sand
42,2%
Silt
6,9%

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

Land cover

Forest99.2%
Crops0.0%
Built-up0.0%
Bare soil0.0%
Other (grassland, water…)0.8%

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

Hydrology22 basins · 0 lakes · 14 rivers

Hydrology metrics for this exact territory

Stream length here

443,0km

Basins crossed

22

Max stream order

6

Max drainage

19 719km²

Discharge in basins

847,8m³/s

Mean precip.

1 630mm/an

Mean T°

23,5°C

Moisture idx

0,01

Mean runoff

447mm/an

Mean elev. (basins)

642m

Watersheds crossing here

13 more basins

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

2,8%

Pesticides

9,7kg/km²

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

Protected areas4

IUCN Not Applicable · 2IUCN II · 1IUCN IV · 1

Dja

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1981

6 210 km²

Dja Faunal Reserve

IUCN Not Applicable

World Heritage Site (natural or mixed) · 1987

5 808 km²

Dja

IUCN IV

Wildlife Reserve · 2007

5 265 km²

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