Ontologia

Water body · NGA

Lake Chad

Nigeria

BWhArid, desert, hot(85 %)

Species observed

104

Observations

223

Area

5 207,3km²

Ecological tissue

Sample of 9 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 Lake Chad : 7 espèces reliées par 7 interactions GloBI sur 2 types (connectance 19.4%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
9
Interactions affichées
7
Connectance
0.194
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

104 distinct species · 223 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

223 obs · 26 cellules
Obs. / cellule
≥ 49
18–48
8–17
6–7
< 6

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

Climate

Mean T°

29,3°C

Annual rain

359mm

Warmest m°

41,1°C

Coldest m°

14,6°C

Elevation: 279 m on average (min 272 m, max 286 m)

Bioclimatic detailsExpert
Annual mean temp.
29,3°C
Annual rain
359mm
Warmest month
41,1°C
Coldest month
14,6°C
Mean alt.
279m
Min
272m
Max
286m
Std. dev.
2m
Köppen-Geiger (dominant)
BWhArid, desert, hot(85 %)Arid

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

7,1

Org. C

11,4g/kg

Clay

28,9%

Sand

48,3%

Silt

22,9%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,0
Org. C
14,2g/kg
Clay
27,5%
Sand
49,3%
Silt
23,2%
5–15 cm
pH H₂O
7,0
Org. C
11,9g/kg
Clay
28,4%
Sand
48,5%
Silt
23,0%
15–30 cm
pH H₂O
7,1
Org. C
8,0g/kg
Clay
30,7%
Sand
46,9%
Silt
22,4%

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

Land cover

Forest4.4%
Crops21.5%
Built-up0.0%
Bare soil1.7%
Other (grassland, water…)72.4%

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

Hydrology21 basins · 14 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

2,5km

Lake surface here

4 096,92km²

Basins crossed

21

Max stream order

5

Max drainage

248 079km²

Discharge in basins

204,7m³/s

Mean precip.

328mm/an

Mean T°

27,2°C

Moisture idx

-0,84

Mean runoff

36mm/an

Mean elev. (basins)

283m

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

4,4%

Pesticides

9,4kg/km²

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

Protected areas3

IUCN Not Reported · 2IUCN IV · 1

Lac Tchad

IUCN IV

Wetland of International Importance (Ramsar Site) · 2008

2 153 km²

Baga

IUCN Not Reported

Forest Reserve

11 km²

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