Ontologia

Local Authority · NGA

Alkaleri

Nigeria

AwTropical, savannah(100 %)

Species observed

1 202

Observations

17 472

Area

6 108,9km²

Ecological tissue

Sample of 35 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 Alkaleri : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 3 types (connectance 5.2%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
31
Connectance
0.052
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

1 202 distinct species · 17 472 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 472 obs · 118 cellules
Obs. / cellule
≥ 2 474
224–2 473
70–223
32–69
< 32

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

Climate

Mean T°

27,0°C

Annual rain

761mm

Warmest m°

38,0°C

Coldest m°

16,4°C

Elevation: 390 m on average (min 193 m, max 740 m)

Bioclimatic detailsExpert
Annual mean temp.
27,0°C
Annual rain
761mm
Warmest month
38,0°C
Coldest month
16,4°C
Mean alt.
390m
Min
193m
Max
740m
Std. dev.
105m
Köppen-Geiger (dominant)
AwTropical, savannah(100 %)Tropical

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

Soil & lithology

pH H₂O

6,4

Org. C

10,8g/kg

Clay

23,1%

Sand

52,2%

Silt

24,7%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,4
Org. C
15,0g/kg
Clay
21,5%
Sand
53,3%
Silt
25,2%
5–15 cm
pH H₂O
6,4
Org. C
10,8g/kg
Clay
22,0%
Sand
53,2%
Silt
24,8%
15–30 cm
pH H₂O
6,4
Org. C
6,6g/kg
Clay
25,9%
Sand
50,1%
Silt
24,0%

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

Land cover

Forest8.7%
Crops33.5%
Built-up0.1%
Bare soil0.7%
Other (grassland, water…)57.0%

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

Hydrology21 basins · 0 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

399,8km

Basins crossed

21

Max stream order

5

Max drainage

11 978km²

Discharge in basins

230,2m³/s

Mean precip.

979mm/an

Mean T°

26,2°C

Moisture idx

-0,49

Mean runoff

189mm/an

Mean elev. (basins)

406m

Watersheds crossing here

12 more basins

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

14,1%

Pesticides

38,4kg/km²

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

Protected areas3

IUCN IV · 1IUCN II · 1IUCN Not Reported · 1

Yankari

IUCN IV

Game Reserve · 1991

2 387 km²

Yankari

IUCN II

Forest Reserve · 1999

2 134 km²

Pai River

IUCN Not Reported

Game Reserve · 1972

158 km²

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