Ontologia

Commune · TCD

Deredia

Chad

BShArid, steppe, hot(100 %)

Species observed

61

Observations

75

Area

2 240,3km²

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 Deredia : 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

61 distinct species · 75 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

75 obs · 6 cellules
Obs. / cellule
≥ 35
35–34
21–34
13–20
< 13

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

Climate

Mean T°

28,6°C

Annual rain

722mm

Warmest m°

40,8°C

Coldest m°

17,7°C

Elevation: 329 m on average (min 320 m, max 335 m)

Bioclimatic detailsExpert
Annual mean temp.
28,6°C
Annual rain
722mm
Warmest month
40,8°C
Coldest month
17,7°C
Mean alt.
329m
Min
320m
Max
335m
Std. dev.
3m
Köppen-Geiger (dominant)
BShArid, steppe, hot(100 %)Arid

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

Soil & lithology

pH H₂O

6,6

Org. C

8,3g/kg

Clay

36,2%

Sand

34,4%

Silt

29,5%

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

Dominant lithology: suGLiMaggregated to Baguirmi

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
10,4g/kg
Clay
34,3%
Sand
35,6%
Silt
30,1%
5–15 cm
pH H₂O
6,6
Org. C
7,9g/kg
Clay
34,8%
Sand
35,3%
Silt
29,9%
15–30 cm
pH H₂O
6,7
Org. C
6,6g/kg
Clay
39,3%
Sand
32,3%
Silt
28,4%

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

Land cover

Forest9.8%
Crops21.7%
Built-up0.0%
Bare soil0.1%
Other (grassland, water…)68.4%

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

Hydrology11 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

87,1km

Basins crossed

11

Max stream order

4

Max drainage

5 717km²

Discharge in basins

26,6m³/s

Mean precip.

726mm/an

Mean T°

28,4°C

Moisture idx

-0,66

Mean runoff

116mm/an

Mean elev. (basins)

331m

Watersheds crossing here

2 more basins

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Built-up

1,4%

Pesticides

0,1kg/km²

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