Ontologia

Department · TCD

Dar Tama

Chad

BWhArid, desert, hot(67 %)

Species observed

68

Observations

265

Area

9 540,6km²

Ecological tissue

Sample of 13 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 Dar Tama : 13 espèces reliées par 8 interactions GloBI sur 2 types (connectance 10.3%, filtre Serrano α=0.2).

Espèces affichées
13
Interactions affichées
8
Connectance
0.103
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

68 distinct species · 265 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

265 obs · 33 cellules
Obs. / cellule
≥ 85
12–84
3–11
1–2
< 1

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

Climate

Mean T°

24,7°C

Annual rain

372mm

Warmest m°

36,6°C

Coldest m°

11,5°C

Elevation: 955 m on average (min 620 m, max 1 196 m)

Bioclimatic detailsExpert
Annual mean temp.
24,7°C
Annual rain
372mm
Warmest month
36,6°C
Coldest month
11,5°C
Mean alt.
955m
Min
620m
Max
1 196m
Std. dev.
84m
Köppen-Geiger (dominant)
BWhArid, desert, hot(67 %)Arid

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

Soil & lithology

pH H₂O

7,5

Org. C

5,8g/kg

Clay

22,4%

Sand

53,9%

Silt

23,6%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Org. C
6,3g/kg
Clay
21,3%
Sand
55,1%
Silt
23,5%
5–15 cm
pH H₂O
7,5
Org. C
5,6g/kg
Clay
22,4%
Sand
54,2%
Silt
23,3%
15–30 cm
pH H₂O
7,5
Org. C
5,4g/kg
Clay
23,4%
Sand
52,5%
Silt
24,1%

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

Land cover

Forest3.0%
Crops19.8%
Built-up0.1%
Bare soil7.4%
Other (grassland, water…)69.7%

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

Hydrology22 basins · 0 lakes · 23 rivers

Hydrology metrics for this exact territory

Stream length here

594,4km

Basins crossed

22

Max stream order

4

Max drainage

6 154km²

Discharge in basins

6,1m³/s

Mean precip.

335mm/an

Mean T°

25,8°C

Moisture idx

-0,84

Mean runoff

14mm/an

Mean elev. (basins)

928m

Watersheds crossing here

13 more basins

Rivers / streams (23, ord ≥ 4)

11 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

6,2%

Pesticides

0,1kg/km²

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

Sub-administrations14