Ontologia

Region · tcd

Mandoul

Chad

AwTropical, savannah(100 %)

Species observed

316

Observations

1 806

Area

17 444,1km²

Ecological tissue

Sample of 20 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 Mandoul : 14 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 21 interactions GloBI sur 2 types (connectance 11.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
21
Connectance
0.111
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

316 distinct species · 1 806 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 806 obs · 128 cellules
Obs. / cellule
≥ 103
27–102
16–26
9–15
< 9

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

Climate

Mean T°

27,3°C

Annual rain

1 076mm

Warmest m°

38,0°C

Coldest m°

19,1°C

Elevation: 399 m on average (min 343 m, max 676 m)

Bioclimatic detailsExpert
Annual mean temp.
27,3°C
Annual rain
1 076mm
Warmest month
38,0°C
Coldest month
19,1°C
Mean alt.
399m
Min
343m
Max
676m
Std. dev.
45m
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

6,2

Org. C

11,9g/kg

Clay

26,3%

Sand

49,1%

Silt

24,6%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,2
Org. C
17,2g/kg
Clay
24,4%
Sand
50,7%
Silt
24,9%
5–15 cm
pH H₂O
6,2
Org. C
12,2g/kg
Clay
25,0%
Sand
50,2%
Silt
24,8%
15–30 cm
pH H₂O
6,2
Org. C
6,5g/kg
Clay
29,4%
Sand
46,5%
Silt
24,1%

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

Land cover

Forest23.0%
Crops17.4%
Built-up0.2%
Bare soil0.2%
Other (grassland, water…)59.2%

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

Hydrology39 basins · 11 lakes · 28 rivers

Hydrology metrics for this exact territory

Stream length here

1 203,4km

Lake surface here

3,00km²

Basins crossed

39

Max stream order

6

Max drainage

469 020km²

Discharge in basins

1 136,8m³/s

Mean precip.

1 041mm/an

Mean T°

27,1°C

Moisture idx

-0,49

Mean runoff

150mm/an

Mean elev. (basins)

399m

Watersheds crossing here

30 more basins

Lakes (11, top by area)

2 more lakes

Rivers / streams (28, ord ≥ 4)

16 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

16,6%

Pesticides

0,2kg/km²

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

Protected areas1

IUCN IV · 1

Nana-Barya

IUCN IV

Faunal Reserve · 1953

2 314 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

Sub-administrations3