Ontologia

Commune · NER

Bilma

Niger

BWhArid, desert, hot(100 %)

Species observed

335

Observations

1 141

Area

271 652,9km²

Ecological tissue

Sample of 42 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 Bilma : 35 espèces reliées par 43 interactions GloBI sur 3 types (connectance 4.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
43
Connectance
0.048
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

335 distinct species · 1 141 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 141 obs · 79 cellules
Obs. / cellule
≥ 274
37–273
10–36
3–9
< 3

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

25,6°C

Annual rain

7mm

Warmest m°

39,8°C

Coldest m°

6,7°C

Elevation: 540 m on average (min 364 m, max 1 118 m)

Bioclimatic detailsExpert
Annual mean temp.
25,6°C
Annual rain
7mm
Warmest month
39,8°C
Coldest month
6,7°C
Mean alt.
540m
Min
364m
Max
1 118m
Std. dev.
144m
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

8,3

Org. C

3,9g/kg

Clay

18,9%

Sand

53,7%

Silt

27,5%

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

Dominant lithology: scGLiMaggregated to Bilma

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,2
Org. C
4,7g/kg
Clay
18,5%
Sand
54,0%
Silt
27,5%
5–15 cm
pH H₂O
8,3
Org. C
4,3g/kg
Clay
18,8%
Sand
53,7%
Silt
27,5%
15–30 cm
pH H₂O
8,3
Org. C
2,5g/kg
Clay
19,3%
Sand
53,3%
Silt
27,4%

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

Land cover

Forest0.0%
Crops0.0%
Built-up0.0%
Bare soil99.8%
Other (grassland, water…)0.2%

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

Hydrology432 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

432

Max drainage

211 532km²

Discharge in basins

90,5m³/s

Mean precip.

14mm/an

Mean T°

25,6°C

Moisture idx

-0,99

Mean runoff

0mm/an

Mean elev. (basins)

543m

Watersheds crossing here

423 more basins

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

0,0%

Pesticides

0,0kg/km²

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

Protected areas5

IUCN Not Applicable · 3IUCN IV · 2

Tassili N'Ajjer

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1986

98 902 km²

Tassili n'Ajjer

IUCN Not Applicable

World Heritage Site (natural or mixed) · 1982

75 390 km²

Oasis du Kawar

IUCN IV

Wetland of International Importance (Ramsar Site) · 2005

3 394 km²

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