Ontologia

Commune · SLE

Freetown4

Sierra Leone

AmTropical, monsoon(100 %)

Species observed

620

Observations

2 304

Area

240,6km²

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 Freetown4 : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 10 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2).

Espèces affichées
15
Interactions affichées
10
Connectance
0.095
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

620 distinct species · 2 304 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 304 obs · 6 cellules
Obs. / cellule
≥ 1 223
1 223–1 222
598–1 222
219–597
< 219

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

Climate

Mean T°

25,1°C

Annual rain

3 781mm

Warmest m°

27,2°C

Coldest m°

23,0°C

Elevation: 241 m on average (min -121 m, max 644 m)

Bioclimatic detailsExpert
Annual mean temp.
25,1°C
Annual rain
3 781mm
Warmest month
27,2°C
Coldest month
23,0°C
Mean alt.
241m
Min
-121m
Max
644m
Std. dev.
183m
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

5,6

Org. C

41,8g/kg

Clay

29,4%

Sand

42,3%

Silt

28,3%

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

Dominant lithology: paGLiMaggregated to Western Rural

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,5
Org. C
53,9g/kg
Clay
27,0%
Sand
44,6%
Silt
28,5%
5–15 cm
pH H₂O
5,5
Org. C
41,5g/kg
Clay
28,8%
Sand
42,6%
Silt
28,6%
15–30 cm
pH H₂O
5,6
Org. C
30,1g/kg
Clay
32,4%
Sand
39,8%
Silt
27,8%

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

Land cover

Forest60.5%
Crops1.7%
Built-up1.4%
Bare soil0.3%
Other (grassland, water…)36.1%

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

Hydrology1 basins · 2 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

9,5km

Lake surface here

0,90km²

Basins crossed

1

Max stream order

2

Max drainage

2 153km²

Discharge in basins

0,8m³/s

Mean precip.

3 264mm/an

Mean T°

25,9°C

Moisture idx

0,55

Mean runoff

2 104mm/an

Mean elev. (basins)

62m

Watersheds crossing here

Lakes (2, top by area)

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

Human pressure

Pop. density

2hab/km²

Night light

0,3nW

Built-up

143,5%

Pesticides

16,2kg/km²

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

Protected areas4

IUCN Not Reported · 3IUCN II · 1🌊 Marine · 2

Yawri Bay

IUCN Not Reported

Marine Protected Area · 2012

919 km²

Western Area

IUCN II

No or Non - Hunting Forest Reserve · 1916

164 km²

Moku Hills

IUCN Not Reported

Forest Reserve · 1937

1 km²

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