Ontologia

Subdivision · SEN

Nioro Alassane Tall

Senegal

BShArid, steppe, hot(100 %)

Species observed

252

Observations

3 707

Area

199,6km²

Ecological tissue

Sample of 23 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 Nioro Alassane Tall : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 22 interactions GloBI sur 3 types (connectance 8.7%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
22
Connectance
0.087
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

252 distinct species · 3 707 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 707 obs · 4 cellules
Obs. / cellule
≥ 3 653
3 653–3 652
43–3 652
43–42
< 43

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

Climate

Mean T°

26,9°C

Annual rain

689mm

Warmest m°

34,8°C

Coldest m°

18,1°C

Elevation: 20 m on average (min 2 m, max 44 m)

Bioclimatic detailsExpert
Annual mean temp.
26,9°C
Annual rain
689mm
Warmest month
34,8°C
Coldest month
18,1°C
Mean alt.
20m
Min
2m
Max
44m
Std. dev.
9m
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

5,5

Org. C

11,1g/kg

Clay

11,6%

Sand

81,8%

Silt

6,6%

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

Dominant lithology: suGLiMaggregated to Foundiougne

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,6
Org. C
14,8g/kg
Clay
10,7%
Sand
82,4%
Silt
6,9%
5–15 cm
pH H₂O
5,4
Org. C
9,8g/kg
Clay
10,0%
Sand
83,5%
Silt
6,5%
15–30 cm
pH H₂O
5,4
Org. C
8,6g/kg
Clay
14,1%
Sand
79,5%
Silt
6,3%

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

Land cover

Forest4.4%
Crops45.4%
Built-up1.1%
Bare soil1.4%
Other (grassland, water…)47.7%

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

Hydrology4 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

11,7km

Basins crossed

4

Max stream order

2

Max drainage

1 696km²

Discharge in basins

0,3m³/s

Mean precip.

730mm/an

Mean T°

27,3°C

Moisture idx

-0,63

Mean runoff

74mm/an

Mean elev. (basins)

20m

Watersheds crossing here

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

Human pressure

Pop. density

3hab/km²

Night light

0,5nW

Built-up

111,1%

Pesticides

3,0kg/km²

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

Protected areas4

IUCN Not Reported · 2IUCN Not Applicable · 1IUCN VI · 1🌊 Marine · 3

Delta du Saloum

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1980

3 187 km²

Delta du Saloum

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 1984

3 187 km²

AMP Sokone

IUCN VI

Marine Protected Area · 2023

214 km²

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