Ontologia

Commune · TZA

Olkolili

Tanzania

AwTropical, savannah(100 %)

Species observed

92

Observations

150

Area

84,5km²

Ecological tissue

Sample of 21 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 Olkolili : 18 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 17 interactions GloBI sur 4 types (connectance 7.4%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
17
Connectance
0.074
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

92 distinct species · 150 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

150 obs · 2 cellules
Obs. / cellule
≥ 103
103–102
103–102
103–102
< 103

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

Climate

Mean T°

21,5°C

Annual rain

1 021mm

Warmest m°

28,8°C

Coldest m°

13,3°C

Elevation: 1 029 m on average (min 921 m, max 1 151 m)

Bioclimatic detailsExpert
Annual mean temp.
21,5°C
Annual rain
1 021mm
Warmest month
28,8°C
Coldest month
13,3°C
Mean alt.
1 029m
Min
921m
Max
1 151m
Std. dev.
63m
Köppen-Geiger (dominant)
AwTropical, savannah(100 %)Tropical

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

Soil & lithology

pH H₂O

6,9

Org. C

23,0g/kg

Clay

30,4%

Sand

45,4%

Silt

24,3%

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

Dominant lithology: suGLiMaggregated to Siha

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
28,4g/kg
Clay
30,2%
Sand
45,4%
Silt
24,5%
5–15 cm
pH H₂O
6,9
Org. C
23,1g/kg
Clay
30,4%
Sand
45,5%
Silt
24,1%
15–30 cm
pH H₂O
6,9
Org. C
17,6g/kg
Clay
30,5%
Sand
45,3%
Silt
24,3%

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

Land cover

Forest8.5%
Crops37.1%
Built-up1.5%
Bare soil0.8%
Other (grassland, water…)52.1%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

14,4km

Basins crossed

2

Max stream order

3

Max drainage

4 710km²

Discharge in basins

0,9m³/s

Mean precip.

1 085mm/an

Mean T°

19,0°C

Moisture idx

-0,28

Mean runoff

270mm/an

Mean elev. (basins)

1 424m

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

2hab/km²

Night light

0,2nW

Built-up

153,3%

Pesticides

0,0kg/km²

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