Ontologia

Commune · TCD

Yalnas-Abou-Deia

Chad

BShArid, steppe, hot(92 %)

Species observed

52

Observations

59

Area

280,5km²

Ecological tissue

Sample of 8 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 Yalnas-Abou-Deia : 6 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 7 interactions GloBI sur 2 types (connectance 25.0%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
8
Interactions affichées
7
Connectance
0.250
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

52 distinct species · 59 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

59 obs · 2 cellules
Obs. / cellule
≥ 58
58–57
58–57
58–57
< 58

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

669mm

Warmest m°

39,7°C

Coldest m°

17,9°C

Elevation: 477 m on average (min 441 m, max 644 m)

Bioclimatic detailsExpert
Annual mean temp.
28,0°C
Annual rain
669mm
Warmest month
39,7°C
Coldest month
17,9°C
Mean alt.
477m
Min
441m
Max
644m
Std. dev.
37m
Köppen-Geiger (dominant)
BShArid, steppe, hot(92 %)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

8,6g/kg

Clay

28,5%

Sand

38,2%

Silt

33,2%

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

Dominant lithology: suGLiMaggregated to Aboudeïa

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
10,0g/kg
Clay
25,4%
Sand
40,1%
Silt
34,4%
5–15 cm
pH H₂O
6,6
Org. C
8,9g/kg
Clay
27,3%
Sand
39,0%
Silt
33,7%
15–30 cm
pH H₂O
6,6
Org. C
6,8g/kg
Clay
32,7%
Sand
35,7%
Silt
31,6%

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

Land cover

Forest13.2%
Crops13.3%
Built-up0.1%
Bare soil0.2%
Other (grassland, water…)73.2%

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

Hydrology4 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

20,5km

Basins crossed

4

Max stream order

3

Max drainage

10 498km²

Discharge in basins

0,7m³/s

Mean precip.

758mm/an

Mean T°

28,0°C

Moisture idx

-0,64

Mean runoff

61mm/an

Mean elev. (basins)

500m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

11,3%

Pesticides

0,1kg/km²

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

Protected areas2

IUCN IV · 1IUCN Not Reported · 1

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