Ontologia

Department · TCD

Djourf Al Ahmar

Chad

BShArid, steppe, hot(100 %)

Species observed

145

Observations

460

Area

3 856,2km²

Ecological tissue

Sample of 4 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 Djourf Al Ahmar : 4 espèces reliées par 3 interactions GloBI sur 1 type (connectance 50.0%, filtre Serrano α=0.2).

Espèces affichées
4
Interactions affichées
3
Connectance
0.500
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

145 distinct species · 460 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

460 obs · 26 cellules
Obs. / cellule
≥ 110
51–109
24–50
8–23
< 8

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

Climate

Mean T°

27,7°C

Annual rain

516mm

Warmest m°

39,4°C

Coldest m°

16,3°C

Elevation: 539 m on average (min 469 m, max 787 m)

Bioclimatic detailsExpert
Annual mean temp.
27,7°C
Annual rain
516mm
Warmest month
39,4°C
Coldest month
16,3°C
Mean alt.
539m
Min
469m
Max
787m
Std. dev.
37m
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

7,0

Org. C

7,4g/kg

Clay

27,8%

Sand

44,3%

Silt

27,9%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
8,1g/kg
Clay
26,4%
Sand
45,5%
Silt
28,1%
5–15 cm
pH H₂O
7,0
Org. C
7,6g/kg
Clay
27,1%
Sand
44,7%
Silt
28,2%
15–30 cm
pH H₂O
7,0
Org. C
6,7g/kg
Clay
29,9%
Sand
42,7%
Silt
27,4%

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

Land cover

Forest5.1%
Crops13.9%
Built-up0.0%
Bare soil3.2%
Other (grassland, water…)77.8%

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

Hydrology19 basins · 0 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

70,3km

Basins crossed

19

Max stream order

4

Max drainage

11 045km²

Discharge in basins

12,2m³/s

Mean precip.

537mm/an

Mean T°

27,9°C

Moisture idx

-0,76

Mean runoff

25mm/an

Mean elev. (basins)

554m

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

1,6%

Pesticides

0,1kg/km²

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

Sub-administrations3