Ontologia

Commune · CMR

Ma'an

Cameroon

AmTropical, monsoon(71 %)

Species observed

1 047

Observations

3 262

Area

3 855,8km²

Ecological tissue

Sample of 16 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 Ma'an : 14 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 13 interactions GloBI sur 3 types (connectance 10.8%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
16
Interactions affichées
13
Connectance
0.108
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

1 047 distinct species · 3 262 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 262 obs · 70 cellules
Obs. / cellule
≥ 624
110–623
32–109
14–31
< 14

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

2 337mm

Warmest m°

28,6°C

Coldest m°

19,8°C

Elevation: 527 m on average (min 235 m, max 826 m)

Bioclimatic detailsExpert
Annual mean temp.
23,2°C
Annual rain
2 337mm
Warmest month
28,6°C
Coldest month
19,8°C
Mean alt.
527m
Min
235m
Max
826m
Std. dev.
79m
Köppen-Geiger (dominant)
AmTropical, monsoon(71 %)Tropical

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

Soil & lithology

pH H₂O

4,5

Org. C

30,4g/kg

Clay

44,1%

Sand

41,6%

Silt

14,3%

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

Dominant lithology: mtGLiMaggregated to Vallée du Ntem

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,5
Org. C
53,6g/kg
Clay
41,3%
Sand
43,8%
Silt
14,9%
5–15 cm
pH H₂O
4,4
Org. C
25,3g/kg
Clay
43,2%
Sand
42,4%
Silt
14,3%
15–30 cm
pH H₂O
4,5
Org. C
12,3g/kg
Clay
47,8%
Sand
38,5%
Silt
13,7%

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

Land cover

Forest95.7%
Crops0.3%
Built-up0.0%
Bare soil0.0%
Other (grassland, water…)4.0%

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

Hydrology18 basins · 0 lakes · 7 rivers

Hydrology metrics for this exact territory

Stream length here

529,4km

Basins crossed

18

Max stream order

6

Max drainage

28 858km²

Discharge in basins

2 149,2m³/s

Mean precip.

2 054mm/an

Mean T°

23,3°C

Moisture idx

0,28

Mean runoff

1 182mm/an

Mean elev. (basins)

553m

Watersheds crossing here

9 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

2,5%

Pesticides

1,0kg/km²

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

Protected areas2

IUCN II · 1IUCN Not Reported · 1🌊 Marine · 1

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