Ontologia

Commune · SLE

Niawa

Sierra Leone

AmTropical, monsoon(100 %)

Species observed

5

Observations

36

Area

193,3km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Species present

5 distinct species · 36 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

36 obs · 4 cellules
Obs. / cellule
≥ 18
18–17
14–17
14–13
< 14

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

Climate

Mean T°

25,2°C

Annual rain

2 655mm

Warmest m°

33,5°C

Coldest m°

21,4°C

Elevation: 130 m on average (min 99 m, max 236 m)

Bioclimatic detailsExpert
Annual mean temp.
25,2°C
Annual rain
2 655mm
Warmest month
33,5°C
Coldest month
21,4°C
Mean alt.
130m
Min
99m
Max
236m
Std. dev.
28m
Köppen-Geiger (dominant)
AmTropical, monsoon(100 %)Tropical

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

Soil & lithology

pH H₂O

5,1

Org. C

31,5g/kg

Clay

27,6%

Sand

51,7%

Silt

20,8%

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

Dominant lithology: mtGLiMaggregated to Kenema

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
42,4g/kg
Clay
26,2%
Sand
53,0%
Silt
20,8%
5–15 cm
pH H₂O
5,1
Org. C
31,8g/kg
Clay
27,0%
Sand
52,1%
Silt
20,9%
15–30 cm
pH H₂O
5,1
Org. C
20,4g/kg
Clay
29,5%
Sand
49,9%
Silt
20,6%

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

Land cover

Forest69.9%
Crops0.1%
Built-up0.1%
Bare soil0.0%
Other (grassland, water…)29.9%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

25,6km

Basins crossed

1

Max stream order

4

Max drainage

1 180km²

Discharge in basins

10,5m³/s

Mean precip.

2 788mm/an

Mean T°

26,1°C

Moisture idx

0,41

Mean runoff

1 706mm/an

Mean elev. (basins)

130m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

1hab/km²

Built-up

7,4%

Pesticides

10,0kg/km²

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

Protected areas2

IUCN Not Reported · 2

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