Ontologia

Arrondissement · NER

Niamey

Niger

BShArid, steppe, hot(100 %)

Species observed

697

Observations

4 508

Area

400,2km²

Ecological tissue

Sample of 38 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 Niamey : 32 espèces reliées par 38 interactions GloBI sur 3 types (connectance 5.4%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
38
Connectance
0.054
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

697 distinct species · 4 508 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 508 obs · 13 cellules
Obs. / cellule
≥ 1 748
1 020–1 747
319–1 019
90–318
< 90

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

Climate

Mean T°

29,3°C

Annual rain

460mm

Warmest m°

40,5°C

Coldest m°

15,9°C

Elevation: 213 m on average (min 179 m, max 262 m)

Bioclimatic detailsExpert
Annual mean temp.
29,3°C
Annual rain
460mm
Warmest month
40,5°C
Coldest month
15,9°C
Mean alt.
213m
Min
179m
Max
262m
Std. dev.
17m
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

5,6

Org. C

4,1g/kg

Clay

16,1%

Sand

70,1%

Silt

13,8%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,8
Org. C
4,5g/kg
Clay
13,8%
Sand
72,5%
Silt
13,8%
5–15 cm
pH H₂O
5,6
Org. C
4,1g/kg
Clay
16,3%
Sand
69,9%
Silt
13,8%
15–30 cm
pH H₂O
5,5
Org. C
3,6g/kg
Clay
18,2%
Sand
68,0%
Silt
13,8%

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

Land cover

Forest2.0%
Crops18.4%
Built-up11.3%
Bare soil12.8%
Other (grassland, water…)55.4%

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

Hydrology4 basins · 2 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

58,2km

Lake surface here

1,91km²

Basins crossed

4

Max stream order

8

Max drainage

668 059km²

Discharge in basins

76,4m³/s

Mean precip.

447mm/an

Mean T°

29,1°C

Moisture idx

-0,79

Mean runoff

22mm/an

Mean elev. (basins)

240m

Watersheds crossing here

Lakes (2, top by area)

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

Human pressure

Pop. density

28hab/km²

Night light

8,2nW

Built-up

1 133,3%

Pesticides

0,0kg/km²

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

Sub-administrations1