Ontologia

Commune · TCD

Marba

Chad

AwTropical, savannah(100 %)

Species observed

9

Observations

9

Area

757,5km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Species present

9 distinct species · 9 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 obs · 2 cellules
Obs. / cellule
≥ 8
8–7
8–7
8–7
< 8

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

939mm

Warmest m°

39,3°C

Coldest m°

17,8°C

Elevation: 349 m on average (min 339 m, max 362 m)

Bioclimatic detailsExpert
Annual mean temp.
27,8°C
Annual rain
939mm
Warmest month
39,3°C
Coldest month
17,8°C
Mean alt.
349m
Min
339m
Max
362m
Std. dev.
6m
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

6,4

Org. C

8,6g/kg

Clay

24,7%

Sand

52,1%

Silt

23,2%

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

Dominant lithology: suGLiMaggregated to Tandjilé Ouest

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,4
Org. C
11,4g/kg
Clay
22,9%
Sand
53,4%
Silt
23,8%
5–15 cm
pH H₂O
6,4
Org. C
9,0g/kg
Clay
23,9%
Sand
52,9%
Silt
23,2%
15–30 cm
pH H₂O
6,4
Org. C
5,5g/kg
Clay
27,5%
Sand
50,0%
Silt
22,5%

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

Land cover

Forest4.3%
Crops41.0%
Built-up0.7%
Bare soil2.3%
Other (grassland, water…)51.7%

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

Hydrology5 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

76,2km

Basins crossed

5

Max stream order

5

Max drainage

67 562km²

Discharge in basins

26,2m³/s

Mean precip.

943mm/an

Mean T°

27,7°C

Moisture idx

-0,53

Mean runoff

468mm/an

Mean elev. (basins)

359m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

1hab/km²

Built-up

74,5%

Pesticides

0,2kg/km²

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