Ontologia

Commune · TCD

Bessao

Chad

AwTropical, savannah(100 %)

Species observed

105

Observations

191

Area

1 161,6km²

Ecological tissue

Sample of 2 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 Bessao : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).

Espèces affichées
2
Interactions affichées
1
Connectance
1.000
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

105 distinct species · 191 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

191 obs · 14 cellules
Obs. / cellule
≥ 44
33–43
15–32
9–14
< 9

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

Climate

Mean T°

26,9°C

Annual rain

1 220mm

Warmest m°

37,8°C

Coldest m°

18,2°C

Elevation: 508 m on average (min 452 m, max 722 m)

Bioclimatic detailsExpert
Annual mean temp.
26,9°C
Annual rain
1 220mm
Warmest month
37,8°C
Coldest month
18,2°C
Mean alt.
508m
Min
452m
Max
722m
Std. dev.
29m
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

12,2g/kg

Clay

16,3%

Sand

62,8%

Silt

20,9%

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

Dominant lithology: ssGLiMaggregated to Monts de Lam

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,3
Org. C
18,5g/kg
Clay
14,3%
Sand
64,5%
Silt
21,2%
5–15 cm
pH H₂O
6,2
Org. C
11,7g/kg
Clay
15,7%
Sand
63,3%
Silt
21,0%
15–30 cm
pH H₂O
6,2
Org. C
6,4g/kg
Clay
18,8%
Sand
60,8%
Silt
20,4%

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

Land cover

Forest24.1%
Crops10.8%
Built-up0.2%
Bare soil0.1%
Other (grassland, water…)64.8%

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

Hydrology7 basins · 0 lakes · 29 rivers

Hydrology metrics for this exact territory

Stream length here

180,0km

Basins crossed

7

Max stream order

4

Max drainage

28 814km²

Discharge in basins

40,4m³/s

Mean precip.

1 213mm/an

Mean T°

26,3°C

Moisture idx

-0,38

Mean runoff

305mm/an

Mean elev. (basins)

517m

Rivers / streams (29, ord ≥ 4)

17 more river segments

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

Human pressure

Pop. density

1hab/km²

Built-up

17,7%

Pesticides

0,2kg/km²

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