Ontologia

Department · TCD

Guéra

Chad

AwTropical, savannah(75 %)

Species observed

514

Observations

7 066

Area

32 313,4km²

Ecological tissue

Sample of 23 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 Guéra : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 23 interactions GloBI sur 3 types (connectance 8.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
23
Connectance
0.083
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

514 distinct species · 7 066 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

7 066 obs · 137 cellules
Obs. / cellule
≥ 862
47–861
7–46
2–6
< 2

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

Climate

Mean T°

28,0°C

Annual rain

794mm

Warmest m°

39,6°C

Coldest m°

18,4°C

Elevation: 411 m on average (min 333 m, max 841 m)

Bioclimatic detailsExpert
Annual mean temp.
28,0°C
Annual rain
794mm
Warmest month
39,6°C
Coldest month
18,4°C
Mean alt.
411m
Min
333m
Max
841m
Std. dev.
55m
Köppen-Geiger (dominant)
AwTropical, savannah(75 %)Tropical

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

Soil & lithology

pH H₂O

6,3

Org. C

9,1g/kg

Clay

29,5%

Sand

37,6%

Silt

32,9%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,3
Org. C
11,6g/kg
Clay
26,7%
Sand
39,5%
Silt
33,7%
5–15 cm
pH H₂O
6,3
Org. C
9,2g/kg
Clay
28,1%
Sand
38,4%
Silt
33,4%
15–30 cm
pH H₂O
6,3
Org. C
6,5g/kg
Clay
33,7%
Sand
34,9%
Silt
31,4%

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

Land cover

Forest16.3%
Crops8.0%
Built-up0.0%
Bare soil0.1%
Other (grassland, water…)75.7%

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

Hydrology65 basins · 0 lakes · 48 rivers

Hydrology metrics for this exact territory

Stream length here

1 631,1km

Basins crossed

65

Max stream order

5

Max drainage

36 377km²

Discharge in basins

204,9m³/s

Mean precip.

830mm/an

Mean T°

28,2°C

Moisture idx

-0,61

Mean runoff

89mm/an

Mean elev. (basins)

414m

Watersheds crossing here

56 more basins

Rivers / streams (48, ord ≥ 4)

36 more river segments

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

Human pressure

Pop. density

0hab/km²

Built-up

0,3%

Pesticides

0,1kg/km²

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

Protected areas4

IUCN IV · 2IUCN Not Reported · 1IUCN II · 1

Zakouma

IUCN II

National Park · 1963

3 043 km²

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

Sub-administrations7