Ontologia

Department · TCD

Tandjilé Ouest

Chad

AwTropical, savannah(100 %)

Species observed

100

Observations

153

Area

3 814,5km²

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 Tandjilé Ouest : 10 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 13 interactions GloBI sur 2 types (connectance 16.7%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
13
Interactions affichées
13
Connectance
0.167
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

100 distinct species · 153 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

153 obs · 23 cellules
Obs. / cellule
≥ 30
20–29
9–19
4–8
< 4

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

Climate

Mean T°

27,5°C

Annual rain

969mm

Warmest m°

38,8°C

Coldest m°

17,6°C

Elevation: 380 m on average (min 339 m, max 487 m)

Bioclimatic detailsExpert
Annual mean temp.
27,5°C
Annual rain
969mm
Warmest month
38,8°C
Coldest month
17,6°C
Mean alt.
380m
Min
339m
Max
487m
Std. dev.
35m
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

6,3

Org. C

9,6g/kg

Clay

23,8%

Sand

52,1%

Silt

24,1%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,3
Org. C
12,8g/kg
Clay
22,2%
Sand
53,1%
Silt
24,6%
5–15 cm
pH H₂O
6,3
Org. C
9,8g/kg
Clay
22,5%
Sand
53,2%
Silt
24,3%
15–30 cm
pH H₂O
6,3
Org. C
6,0g/kg
Clay
26,7%
Sand
49,8%
Silt
23,5%

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

Land cover

Forest6.5%
Crops37.2%
Built-up0.6%
Bare soil1.4%
Other (grassland, water…)54.4%

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

Hydrology10 basins · 3 lakes · 9 rivers

Hydrology metrics for this exact territory

Stream length here

359,5km

Lake surface here

0,30km²

Basins crossed

10

Max stream order

6

Max drainage

67 562km²

Discharge in basins

189,8m³/s

Mean precip.

992mm/an

Mean T°

27,5°C

Moisture idx

-0,51

Mean runoff

470mm/an

Mean elev. (basins)

385m

Watersheds crossing here

1 more basins

Lakes (3, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

54,9%

Pesticides

0,2kg/km²

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

Sub-administrations6