Ontologia

Commune · SLE

Biriwa

Sierra Leone

AmTropical, monsoon(67 %)

Species observed

151

Observations

310

Area

913,4km²

Ecological tissue

Sample of 17 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 Biriwa : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 2 types (connectance 8.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
17
Interactions affichées
11
Connectance
0.081
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

151 distinct species · 310 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

310 obs · 14 cellules
Obs. / cellule
≥ 76
72–75
21–71
15–20
< 15

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

Climate

Mean T°

26,1°C

Annual rain

2 503mm

Warmest m°

35,8°C

Coldest m°

20,3°C

Elevation: 193 m on average (min 66 m, max 471 m)

Bioclimatic detailsExpert
Annual mean temp.
26,1°C
Annual rain
2 503mm
Warmest month
35,8°C
Coldest month
20,3°C
Mean alt.
193m
Min
66m
Max
471m
Std. dev.
92m
Köppen-Geiger (dominant)
AmTropical, monsoon(67 %)Tropical

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

Soil & lithology

pH H₂O

5,3

Org. C

31,0g/kg

Clay

26,6%

Sand

49,9%

Silt

23,5%

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

Dominant lithology: vbGLiMaggregated to Bombali

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
41,9g/kg
Clay
24,4%
Sand
51,8%
Silt
23,7%
5–15 cm
pH H₂O
5,2
Org. C
31,9g/kg
Clay
26,6%
Sand
49,5%
Silt
23,9%
15–30 cm
pH H₂O
5,3
Org. C
19,1g/kg
Clay
29,0%
Sand
48,2%
Silt
22,8%

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

Land cover

Forest40.5%
Crops0.7%
Built-up0.1%
Bare soil0.2%
Other (grassland, water…)58.5%

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

Hydrology4 basins · 0 lakes · 9 rivers

Hydrology metrics for this exact territory

Stream length here

94,2km

Basins crossed

4

Max stream order

4

Max drainage

6 625km²

Discharge in basins

74,7m³/s

Mean precip.

2 672mm/an

Mean T°

26,6°C

Moisture idx

0,32

Mean runoff

1 804mm/an

Mean elev. (basins)

183m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Built-up

9,5%

Pesticides

14,4kg/km²

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