Ontologia

Commune · TCD

Ouled-Rachid

Chad

BWhArid, desert, hot(100 %)

Species observed

322

Observations

1 469

Area

24 974,8km²

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Ouled-Rachid : 19 espèces reliées par 36 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
36
Connectance
0.095
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

322 distinct species · 1 469 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 469 obs · 135 cellules
Obs. / cellule
≥ 236
18–235
4–17
1–3
< 1

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

Climate

Mean T°

28,8°C

Annual rain

165mm

Warmest m°

40,5°C

Coldest m°

14,5°C

Elevation: 350 m on average (min 311 m, max 396 m)

Bioclimatic detailsExpert
Annual mean temp.
28,8°C
Annual rain
165mm
Warmest month
40,5°C
Coldest month
14,5°C
Mean alt.
350m
Min
311m
Max
396m
Std. dev.
16m
Köppen-Geiger (dominant)
BWhArid, desert, hot(100 %)Arid

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

Soil & lithology

pH H₂O

7,8

Org. C

4,0g/kg

Clay

32,5%

Sand

40,7%

Silt

26,8%

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

Dominant lithology: suGLiMaggregated to Fitri

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,8
Org. C
4,6g/kg
Clay
31,4%
Sand
41,6%
Silt
27,0%
5–15 cm
pH H₂O
7,8
Org. C
4,0g/kg
Clay
32,8%
Sand
40,5%
Silt
26,7%
15–30 cm
pH H₂O
7,9
Org. C
3,4g/kg
Clay
33,2%
Sand
39,9%
Silt
26,9%

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

Land cover

Forest0.5%
Crops8.9%
Built-up0.0%
Bare soil40.0%
Other (grassland, water…)50.5%

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

Hydrology65 basins · 1 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

10,7km

Lake surface here

0,22km²

Basins crossed

65

Max stream order

1

Max drainage

24 161km²

Discharge in basins

6,2m³/s

Mean precip.

179mm/an

Mean T°

29,6°C

Moisture idx

-0,92

Mean runoff

7mm/an

Mean elev. (basins)

351m

Watersheds crossing here

56 more basins

Lakes (1, top by area)

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

0,1%

Pesticides

0,0kg/km²

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

Protected areas1

IUCN IV · 1

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