Ontologia

Commune · SLE

Njaluahun

Sierra Leone

AmTropical, monsoon(96 %)

Species observed

76

Observations

298

Area

355,9km²

Ecological tissue

Sample of 15 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 Njaluahun : 14 espèces reliées par 10 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
15
Interactions affichées
10
Connectance
0.095
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

76 distinct species · 298 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

298 obs · 9 cellules
Obs. / cellule
≥ 184
184–183
35–183
6–34
< 6

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

Climate

Mean T°

25,7°C

Annual rain

2 187mm

Warmest m°

34,0°C

Coldest m°

21,5°C

Elevation: 181 m on average (min 150 m, max 230 m)

Bioclimatic detailsExpert
Annual mean temp.
25,7°C
Annual rain
2 187mm
Warmest month
34,0°C
Coldest month
21,5°C
Mean alt.
181m
Min
150m
Max
230m
Std. dev.
13m
Köppen-Geiger (dominant)
AmTropical, monsoon(96 %)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

29,1g/kg

Clay

30,5%

Sand

51,8%

Silt

17,8%

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

Dominant lithology: mtGLiMaggregated to Kailahun

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,1
Org. C
43,7g/kg
Clay
29,4%
Sand
53,4%
Silt
17,3%
5–15 cm
pH H₂O
5,1
Org. C
27,2g/kg
Clay
30,0%
Sand
51,7%
Silt
18,2%
15–30 cm
pH H₂O
5,1
Org. C
16,3g/kg
Clay
32,0%
Sand
50,2%
Silt
17,9%

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

Land cover

Forest56.2%
Crops0.7%
Built-up0.4%
Bare soil0.1%
Other (grassland, water…)42.6%

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

Hydrology3 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

123,6km

Basins crossed

3

Max stream order

6

Max drainage

19 650km²

Discharge in basins

113,5m³/s

Mean precip.

2 592mm/an

Mean T°

25,7°C

Moisture idx

0,33

Mean runoff

1 583mm/an

Mean elev. (basins)

263m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

43,4%

Pesticides

13,1kg/km²

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