Ontologia

Commune · TZA

Olasiti

Tanzania

CwaTemperate, dry winter, hot summer(79 %)

Species observed

705

Observations

9 800

Area

66,2km²

Ecological tissue

Sample of 29 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 Olasiti : 27 espèces reliées par 29 interactions GloBI sur 5 types (connectance 7.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
29
Connectance
0.071
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

705 distinct species · 9 800 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 800 obs · 2 cellules
Obs. / cellule
≥ 9 755
9 755–9 754
9 755–9 754
9 755–9 754
< 9 755

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

Climate

Mean T°

19,9°C

Annual rain

853mm

Warmest m°

28,2°C

Coldest m°

11,7°C

Elevation: 1 345 m on average (min 1 182 m, max 1 438 m)

Bioclimatic detailsExpert
Annual mean temp.
19,9°C
Annual rain
853mm
Warmest month
28,2°C
Coldest month
11,7°C
Mean alt.
1 345m
Min
1 182m
Max
1 438m
Std. dev.
47m
Köppen-Geiger (dominant)
CwaTemperate, dry winter, hot summer(79 %)Temperate

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

Soil & lithology

pH H₂O

7,2

Org. C

15,2g/kg

Clay

31,7%

Sand

39,2%

Silt

29,1%

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

Dominant lithology: suGLiMaggregated to Arusha Urban

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,2
Org. C
18,2g/kg
Clay
29,9%
Sand
40,6%
Silt
29,5%
5–15 cm
pH H₂O
7,2
Org. C
15,3g/kg
Clay
29,3%
Sand
40,9%
Silt
29,8%
15–30 cm
pH H₂O
7,1
Org. C
12,1g/kg
Clay
35,8%
Sand
36,3%
Silt
27,9%

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

Land cover

Forest10.3%
Crops22.9%
Built-up5.3%
Bare soil0.3%
Other (grassland, water…)61.1%

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

Hydrology3 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

14,1km

Basins crossed

3

Max stream order

3

Max drainage

4 710km²

Discharge in basins

0,4m³/s

Mean precip.

995mm/an

Mean T°

19,0°C

Moisture idx

-0,34

Mean runoff

167mm/an

Mean elev. (basins)

1 436m

Watersheds crossing here

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

Human pressure

Pop. density

6hab/km²

Night light

2,1nW

Built-up

532,5%

Pesticides

0,0kg/km²

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