Ontologia

District · GMB

Nianija

Gambia

BShArid, steppe, hot(100 %)

Species observed

191

Observations

583

Area

167km²

Ecological tissue

Sample of 39 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 Nianija : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 4.3%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
32
Connectance
0.043
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

191 distinct species · 583 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

583 obs · 6 cellules
Obs. / cellule
≥ 334
334–333
130–333
74–129
< 74

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

Climate

Mean T°

28,4°C

Annual rain

749mm

Warmest m°

37,9°C

Coldest m°

18,7°C

Elevation: 9 m on average (min 1 m, max 44 m)

Bioclimatic detailsExpert
Annual mean temp.
28,4°C
Annual rain
749mm
Warmest month
37,9°C
Coldest month
18,7°C
Mean alt.
9m
Min
1m
Max
44m
Std. dev.
10m
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

6,0

Org. C

9,4g/kg

Clay

19,4%

Sand

61,9%

Silt

18,7%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
10,3g/kg
Clay
17,2%
Sand
64,3%
Silt
18,5%
5–15 cm
pH H₂O
6,0
Org. C
9,3g/kg
Clay
18,3%
Sand
62,5%
Silt
19,2%
15–30 cm
pH H₂O
6,0
Org. C
8,7g/kg
Clay
22,6%
Sand
58,9%
Silt
18,5%

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

Land cover

Forest8.7%
Crops31.8%
Built-up0.2%
Bare soil0.8%
Other (grassland, water…)58.5%

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

Hydrology3 basins · 1 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

44,1km

Lake surface here

0,07km²

Basins crossed

3

Max stream order

6

Max drainage

65 509km²

Discharge in basins

40,5m³/s

Mean precip.

683mm/an

Mean T°

27,6°C

Moisture idx

-0,67

Mean runoff

41mm/an

Mean elev. (basins)

24m

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

Human pressure

Pop. density

1hab/km²

Built-up

24,2%

Pesticides

19,1kg/km²

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

Protected areas1

IUCN VI · 1

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