Ontologia

Department · TCD

Mayo-Dallah

Chad

AwTropical, savannah(100 %)

Species observed

295

Observations

1 203

Area

8 138,4km²

Ecological tissue

Sample of 14 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 Mayo-Dallah : 12 espèces reliées par 9 interactions GloBI sur 1 type (connectance 9.9%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
14
Interactions affichées
9
Connectance
0.099
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

295 distinct species · 1 203 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 203 obs · 69 cellules
Obs. / cellule
≥ 223
31–222
18–30
13–17
< 13

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 062mm

Warmest m°

38,3°C

Coldest m°

18,2°C

Elevation: 414 m on average (min 291 m, max 569 m)

Bioclimatic detailsExpert
Annual mean temp.
27,3°C
Annual rain
1 062mm
Warmest month
38,3°C
Coldest month
18,2°C
Mean alt.
414m
Min
291m
Max
569m
Std. dev.
44m
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

6,4

Org. C

10,5g/kg

Clay

20,5%

Sand

58,3%

Silt

21,2%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,5
Org. C
15,7g/kg
Clay
18,6%
Sand
59,9%
Silt
21,5%
5–15 cm
pH H₂O
6,4
Org. C
10,1g/kg
Clay
19,4%
Sand
59,2%
Silt
21,4%
15–30 cm
pH H₂O
6,4
Org. C
5,8g/kg
Clay
23,6%
Sand
55,7%
Silt
20,7%

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

Land cover

Forest12.8%
Crops29.6%
Built-up0.1%
Bare soil0.3%
Other (grassland, water…)57.1%

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

Hydrology18 basins · 0 lakes · 46 rivers

Hydrology metrics for this exact territory

Stream length here

757,1km

Basins crossed

18

Max stream order

4

Max drainage

16 090km²

Discharge in basins

55,2m³/s

Mean precip.

1 003mm/an

Mean T°

27,2°C

Moisture idx

-0,48

Mean runoff

189mm/an

Mean elev. (basins)

400m

Watersheds crossing here

9 more basins

Rivers / streams (46, ord ≥ 4)

34 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

13,7%

Pesticides

0,2kg/km²

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

Protected areas1

IUCN II · 1

Sena Oura

IUCN II

National Park · 2010

746 km²

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

Sub-administrations13