Ontologia

Commune · CMR

Dja

Cameroon

AwTropical, savannah(100 %)

Species observed

440

Observations

869

Area

4 830,7km²

Ecological tissue

Sample of 3 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 Dja : 2 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
3
Interactions affichées
2
Connectance
0.667
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

440 distinct species · 869 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

869 obs · 35 cellules
Obs. / cellule
≥ 244
45–243
17–44
8–16
< 8

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

Climate

Mean T°

23,2°C

Annual rain

1 684mm

Warmest m°

30,8°C

Coldest m°

19,2°C

Elevation: 676 m on average (min 559 m, max 808 m)

Bioclimatic detailsExpert
Annual mean temp.
23,2°C
Annual rain
1 684mm
Warmest month
30,8°C
Coldest month
19,2°C
Mean alt.
676m
Min
559m
Max
808m
Std. dev.
44m
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

5,0

Org. C

24,2g/kg

Clay

48,4%

Sand

42,7%

Silt

8,9%

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

Dominant lithology: mtGLiMaggregated to Haut Nyong

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
37,2g/kg
Clay
45,4%
Sand
45,1%
Silt
9,5%
5–15 cm
pH H₂O
5,0
Org. C
22,6g/kg
Clay
47,5%
Sand
43,6%
Silt
8,9%
15–30 cm
pH H₂O
5,0
Org. C
12,9g/kg
Clay
52,2%
Sand
39,5%
Silt
8,3%

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

Land cover

Forest99.6%
Crops0.0%
Built-up0.0%
Bare soil0.0%
Other (grassland, water…)0.4%

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

Hydrology12 basins · 0 lakes · 10 rivers

Hydrology metrics for this exact territory

Stream length here

287,3km

Basins crossed

12

Max stream order

4

Max drainage

3 095km²

Discharge in basins

65,6m³/s

Mean precip.

1 600mm/an

Mean T°

23,2°C

Moisture idx

0,00

Mean runoff

408mm/an

Mean elev. (basins)

698m

Watersheds crossing here

3 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

1,0%

Pesticides

1,2kg/km²

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

Protected areas3

IUCN Not Applicable · 2IUCN 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