Ontologia

Commune · TCD

Bourtail

Chad

BWhArid, desert, hot(100 %)

Species observed

171

Observations

557

Area

1 529,2km²

Ecological tissue

Sample of 33 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 Bourtail : 27 espèces reliées par 32 interactions GloBI sur 3 types (connectance 6.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
32
Connectance
0.061
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

171 distinct species · 557 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

557 obs · 14 cellules
Obs. / cellule
≥ 145
144–144
43–143
26–42
< 26

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

Climate

Mean T°

28,3°C

Annual rain

340mm

Warmest m°

39,4°C

Coldest m°

16,0°C

Elevation: 547 m on average (min 451 m, max 719 m)

Bioclimatic detailsExpert
Annual mean temp.
28,3°C
Annual rain
340mm
Warmest month
39,4°C
Coldest month
16,0°C
Mean alt.
547m
Min
451m
Max
719m
Std. dev.
67m
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

7,6

Org. C

6,0g/kg

Clay

29,8%

Sand

40,4%

Silt

29,8%

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

Dominant lithology: suGLiMaggregated to Ouara

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Org. C
6,8g/kg
Clay
29,7%
Sand
40,5%
Silt
29,7%
5–15 cm
pH H₂O
7,6
Org. C
6,2g/kg
Clay
29,9%
Sand
40,5%
Silt
29,6%
15–30 cm
pH H₂O
7,6
Org. C
5,1g/kg
Clay
29,8%
Sand
40,2%
Silt
30,0%

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

Land cover

Forest2.3%
Crops26.8%
Built-up0.1%
Bare soil7.3%
Other (grassland, water…)63.6%

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

Hydrology7 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

15,4km

Basins crossed

7

Max stream order

2

Max drainage

2 241km²

Discharge in basins

0,3m³/s

Mean precip.

326mm/an

Mean T°

29,2°C

Moisture idx

-0,85

Mean runoff

12mm/an

Mean elev. (basins)

501m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Built-up

5,8%

Pesticides

0,1kg/km²

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