Ontologia

Region · cmr

Extrême-Nord

Cameroon

BShArid, steppe, hot(64 %)

Species observed

2 467

Observations

46 234

Area

34 294,2km²

Ecological tissue

Sample of 30 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 Extrême-Nord : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 2 types (connectance 6.9%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
30
Connectance
0.069
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

2 467 distinct species · 46 234 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

46 234 obs · 587 cellules
Obs. / cellule
≥ 1 256
165–1 255
41–164
15–40
< 15

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

Climate

Mean T°

27,8°C

Annual rain

754mm

Warmest m°

39,8°C

Coldest m°

16,6°C

Elevation: 388 m on average (min 280 m, max 1 241 m)

Bioclimatic detailsExpert
Annual mean temp.
27,8°C
Annual rain
754mm
Warmest month
39,8°C
Coldest month
16,6°C
Mean alt.
388m
Min
280m
Max
1 241m
Std. dev.
153m
Köppen-Geiger (dominant)
BShArid, steppe, hot(64 %)Arid

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

Soil & lithology

pH H₂O

6,7

Org. C

8,5g/kg

Clay

28,1%

Sand

47,3%

Silt

24,6%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
11,0g/kg
Clay
25,8%
Sand
48,9%
Silt
25,3%
5–15 cm
pH H₂O
6,7
Org. C
8,3g/kg
Clay
27,5%
Sand
47,8%
Silt
24,7%
15–30 cm
pH H₂O
6,8
Org. C
6,0g/kg
Clay
31,1%
Sand
45,2%
Silt
23,7%

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

Land cover

Forest5.5%
Crops34.5%
Built-up0.4%
Bare soil2.7%
Other (grassland, water…)57.0%

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

Hydrology87 basins · 29 lakes · 56 rivers

Hydrology metrics for this exact territory

Stream length here

2 252,0km

Lake surface here

1 986,35km²

Basins crossed

87

Max stream order

8

Max drainage

609 864km²

Discharge in basins

3 628,9m³/s

Mean precip.

700mm/an

Mean T°

27,6°C

Moisture idx

-0,66

Mean runoff

96mm/an

Mean elev. (basins)

379m

Watersheds crossing here

78 more basins

Lakes (29, top by area)

20 more lakes

Rivers / streams (56, ord ≥ 4)

44 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

39,5%

Pesticides

2,2kg/km²

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

Protected areas8

IUCN II · 3IUCN Not Reported · 2IUCN IV · 2IUCN Not Applicable · 1

Lac Tchad

IUCN IV

Wetland of International Importance (Ramsar Site) · 2008

2 153 km²

Waza

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1979

1 407 km²

Waza

IUCN II

National Park · 1968

1 407 km²

Mandelia

IUCN IV

Faunal Reserve · 1969

1 316 km²

Complete list

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

Sub-administrations6