Ontologia

Commune · TCD

Mandjafa

Chad

BShArid, steppe, hot(100 %)

Species observed

72

Observations

159

Area

4 062,6km²

Ecological tissue

Sample of 5 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 Mandjafa : 5 espèces reliées par 3 interactions GloBI sur 2 types (connectance 30.0%, filtre Serrano α=0.2).

Espèces affichées
5
Interactions affichées
3
Connectance
0.300
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

72 distinct species · 159 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

159 obs · 22 cellules
Obs. / cellule
≥ 35
19–34
4–18
3–3
< 3

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

Climate

Mean T°

28,5°C

Annual rain

674mm

Warmest m°

40,8°C

Coldest m°

16,9°C

Elevation: 321 m on average (min 301 m, max 332 m)

Bioclimatic detailsExpert
Annual mean temp.
28,5°C
Annual rain
674mm
Warmest month
40,8°C
Coldest month
16,9°C
Mean alt.
321m
Min
301m
Max
332m
Std. dev.
6m
Köppen-Geiger (dominant)
BShArid, steppe, hot(100 %)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

8,2g/kg

Clay

38,9%

Sand

30,1%

Silt

31,0%

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

Dominant lithology: suGLiMaggregated to Baguirmi

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
10,6g/kg
Clay
37,2%
Sand
31,3%
Silt
31,5%
5–15 cm
pH H₂O
6,7
Org. C
7,7g/kg
Clay
37,8%
Sand
30,8%
Silt
31,4%
15–30 cm
pH H₂O
6,8
Org. C
6,2g/kg
Clay
41,5%
Sand
28,4%
Silt
30,1%

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

Land cover

Forest8.4%
Crops23.9%
Built-up0.0%
Bare soil0.3%
Other (grassland, water…)67.4%

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

Hydrology13 basins · 5 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

278,6km

Lake surface here

1,71km²

Basins crossed

13

Max stream order

8

Max drainage

505 037km²

Discharge in basins

1 767,4m³/s

Mean precip.

666mm/an

Mean T°

28,3°C

Moisture idx

-0,68

Mean runoff

108mm/an

Mean elev. (basins)

324m

Watersheds crossing here

4 more basins

Lakes (5, top by area)

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

Human pressure

Pop. density

0hab/km²

Built-up

3,3%

Pesticides

0,1kg/km²

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