Commune · TCD
Andoum
Chad
Species observed
65
Observations
138
Area
773,5km²
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).
Indicateurs du tissu écologique
Tissu écologique de Andoum : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
65 distinct species · 138 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
27,1°C
Annual rain
1 104mm
Warmest m°
38,1°C
Coldest m°
17,9°C
Elevation: 456 m on average (min 407 m, max 523 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
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
11,4g/kg
Clay
20,4%
Sand
56,9%
Silt
22,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Monts de Lam
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology6 basins · 1 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
121,3km
Lake surface here
0,15km²
Basins crossed
6
Max stream order
6
Max drainage
33 167km²
Discharge in basins
92,2m³/s
Mean precip.
1 205mm/an
Mean T°
26,6°C
Moisture idx
-0,38
Mean runoff
303mm/an
Mean elev. (basins)
467m
Watersheds crossing here
- Bassin de Logonesub-area2 295,1 km²overlap407.51 km²53%
- Bassin de Nyasub-area341,6 km²overlap208.45 km²27%
- Bassin de Laosub-area238,2 km²overlap141.56 km²18%
- Bassin de Banyisub-area370,4 km²overlap14.42 km²2%
- Bassin de Kou Bassasub-area502,6 km²overlap1.16 km²0%
- Bassin de Nyasub-area1 297,3 km²overlap0.43 km²0%
Lakes (1, top by area)
Rivers / streams (12, ord ≥ 4)
- Nyaord 5len here34.46 km15%total233 km
- Laoord 5len here21.89 km74%total30 km
- Nyanord 2len here16.57 km75%total22 km
- Logoneord 6len here12.29 km1%total1222 km
- Békalord 1len here12.08 km100%total12 km
- Kouriord 1len here6.61 km100%total7 km
- Koubrouord 1len here5.85 km100%total6 km
- Banyiord 3len here4.60 km11%total43 km
- Mbaguiord 5len here4.23 km5%total87 km
- Menegouiord 3len here1.48 km10%total14 km
- Lao Mdoumord 1len here1.09 km10%total11 km
- Koupannord 2len here0.18 km1%total32 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
14,8%
Pesticides
0,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)