Department · TCD
Lac Wey
Chad
Species observed
166
Observations
407
Area
4 343km²
Ecological tissue
Sample of 26 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 Lac Wey : 22 espèces reliées par 24 interactions GloBI sur 4 types (connectance 7.4%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
166 distinct species · 407 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,9°C
Annual rain
1 049mm
Warmest m°
37,5°C
Coldest m°
17,9°C
Elevation: 442 m on average (min 371 m, max 548 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
10,5g/kg
Clay
24,9%
Sand
49,0%
Silt
26,1%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
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)
Hydrology15 basins · 2 lakes · 24 rivers
Hydrology metrics for this exact territory
Stream length here
368,5km
Lake surface here
1,56km²
Basins crossed
15
Max stream order
5
Max drainage
58 634km²
Discharge in basins
441,3m³/s
Mean precip.
1 074mm/an
Mean T°
26,9°C
Moisture idx
-0,46
Mean runoff
472mm/an
Mean elev. (basins)
431m
Watersheds crossing here
- Bassin de Guénisub-area915,2 km²overlap877.19 km²20%
- Bassin de Logonesub-area2 668,1 km²overlap628.21 km²14%
- Bassin de Mayo Boulagiesub-area1 120,6 km²overlap582.95 km²13%
- Bassin de Koubanla Mayosub-area498,3 km²overlap492.90 km²11%
- Bassin de Bidasub-area450,9 km²overlap443.71 km²10%
- Bassin de Tandjilésub-area1 100,4 km²overlap294.35 km²7%
- Bassin de Logonesub-area674,3 km²overlap239.49 km²6%
- Bassin de Banyisub-area370,4 km²overlap199.93 km²5%
- Bassin de Kou Bassasub-area502,6 km²overlap193.65 km²4%
6 more basinssorted by overlap
- Bassin de Tandjilésub-area1 947,1 km²overlap190.97 km²4%
- Bassin de Nyasub-area341,6 km²overlap122.28 km²3%
- Bassin de Laosub-area238,2 km²overlap34.83 km²1%
- Bassin de Logonesub-area2 631,7 km²overlap34.28 km²1%
- Bassin de Tandjilésub-area238,1 km²overlap5.00 km²0%
- Bassin de Mbaguisub-area58,8 km²overlap3.28 km²0%
Lakes (2, top by area)
Rivers / streams (24, ord ≥ 4)
- Koubanla Mayoord 2len here43.57 km95%total46 km
- Logoneord 6len here36.67 km3%total1222 km
- Banyiord 3len here34.42 km80%total43 km
- Bogoumord 5len here33.96 km74%total46 km
- Kouord 5len here28.94 km42%total69 km
- Man Bagéord 3len here25.71 km65%total40 km
- Bidaord 6len here23.19 km82%total28 km
- Zoord 3len here21.48 km100%total22 km
- Kou Baoord 2len here20.09 km89%total23 km
- Tandjiléord 5len here18.36 km5%total376 km
- Béniguéord 2len here16.79 km100%total17 km
- Nyaord 5len here11.92 km5%total233 km
12 more river segmentssorted by Strahler order + length
- Lao Mdoumord 1len here9.78 km90%total11 km
- Baguéord 2len here7.47 km100%total7 km
- Banlaord 2len here7.45 km100%total7 km
- Tagoord 3len here5.54 km100%total6 km
- Banadjéord 4len here5.00 km61%total8 km
- Kadi Semdjéord 1len here4.54 km100%total5 km
- Kouaord 1len here3.64 km100%total4 km
- Poum Poumord 3len here3.45 km51%total7 km
- Missouord 3len here1.83 km37%total5 km
- Lakir Mayoord 1len here1.79 km34%total5 km
- Peul Peulord 1len here1.63 km100%total2 km
- Mayo Boulagieord 4len here1.32 km2%total58 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,0nW
Built-up
52,5%
Pesticides
0,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)