Ontologia

Department · ner

Maradi

Niger

BWhArid, desert, hot(68 %)

Species observed

604

Observations

4 508

Area

39 327km²

Ecological tissue

Sample of 30 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 Maradi : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 3 types (connectance 6.2%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
27
Connectance
0.062
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

604 distinct species · 4 508 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 508 obs · 273 cellules
Obs. / cellule
≥ 105
44–104
18–43
6–17
< 6

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

Climate

Mean T°

27,7°C

Annual rain

368mm

Warmest m°

39,5°C

Coldest m°

13,0°C

Elevation: 409 m on average (min 299 m, max 509 m)

Bioclimatic detailsExpert
Annual mean temp.
27,7°C
Annual rain
368mm
Warmest month
39,5°C
Coldest month
13,0°C
Mean alt.
409m
Min
299m
Max
509m
Std. dev.
36m
Köppen-Geiger (dominant)
BWhArid, desert, hot(68 %)Arid

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

Soil & lithology

pH H₂O

6,7

Org. C

4,1g/kg

Clay

18,8%

Sand

64,5%

Silt

16,7%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
4,9g/kg
Clay
17,2%
Sand
66,0%
Silt
16,8%
5–15 cm
pH H₂O
6,7
Org. C
4,2g/kg
Clay
18,7%
Sand
64,5%
Silt
16,8%
15–30 cm
pH H₂O
6,7
Org. C
3,3g/kg
Clay
20,3%
Sand
63,2%
Silt
16,5%

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

Land cover

Forest4.6%
Crops38.0%
Built-up0.3%
Bare soil3.9%
Other (grassland, water…)53.2%

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

Hydrology89 basins · 2 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

418,8km

Lake surface here

2,67km²

Basins crossed

89

Max stream order

4

Max drainage

43 327km²

Discharge in basins

286,6m³/s

Mean precip.

357mm/an

Mean T°

27,6°C

Moisture idx

-0,83

Mean runoff

14mm/an

Mean elev. (basins)

414m

Watersheds crossing here

80 more basins

Lakes (2, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

28,2%

Pesticides

0,2kg/km²

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

Protected areas12

IUCN Not Reported · 8IUCN Not Applicable · 3IUCN IV · 1

Zamfara

IUCN Not Reported

Forest Reserve

2 087 km²

Isa Zurmi

IUCN Not Reported

Forest Reserve

412 km²

Complete list

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

Sub-administrations13