Ontologia

Commune · KEN

Olkeri

Kenya

CfbTemperate, no dry season, warm summer(93 %)

Species observed

838

Observations

16 475

Area

66km²

Ecological tissue

Sample of 32 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 Olkeri : 30 espèces reliées par 26 interactions GloBI sur 3 types (connectance 5.2%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
26
Connectance
0.052
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

838 distinct species · 16 475 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

16 475 obs · 2 cellules
Obs. / cellule
≥ 10 667
10 667–10 666
10 667–10 666
10 667–10 666
< 10 667

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

Climate

Mean T°

18,0°C

Annual rain

863mm

Warmest m°

25,7°C

Coldest m°

10,8°C

Elevation: 1 866 m on average (min 1 641 m, max 2 257 m)

Bioclimatic detailsExpert
Annual mean temp.
18,0°C
Annual rain
863mm
Warmest month
25,7°C
Coldest month
10,8°C
Mean alt.
1 866m
Min
1 641m
Max
2 257m
Std. dev.
132m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(93 %)Temperate

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

Soil & lithology

pH H₂O

6,3

Org. C

27,1g/kg

Clay

46,1%

Sand

27,1%

Silt

26,8%

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

Dominant lithology: viGLiMaggregated to Kajiado North

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,3
Org. C
31,4g/kg
Clay
45,4%
Sand
27,4%
Silt
27,1%
5–15 cm
pH H₂O
6,3
Org. C
23,5g/kg
Clay
45,6%
Sand
27,4%
Silt
26,9%
15–30 cm
pH H₂O
6,3
Org. C
26,4g/kg
Clay
47,2%
Sand
26,5%
Silt
26,3%

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

Land cover

Forest13.1%
Crops40.0%
Built-up9.2%
Bare soil0.1%
Other (grassland, water…)37.5%

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

Hydrology2 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

13,1km

Basins crossed

2

Max stream order

3

Max drainage

3 657km²

Discharge in basins

0,1m³/s

Mean precip.

761mm/an

Mean T°

18,4°C

Moisture idx

-0,51

Mean runoff

79mm/an

Mean elev. (basins)

1 722m

Watersheds crossing here

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

Human pressure

Pop. density

9hab/km²

Night light

3,2nW

Built-up

920,2%

Pesticides

1,3kg/km²

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

Protected areas3

IUCN Not Reported · 2IUCN II · 1

Nairobi

IUCN II

National Park · 1946

116 km²

Ngong Hills

IUCN Not Reported

Forest Reserve · 1985

31 km²

Ololua

IUCN Not Reported

Forest Reserve · 1941

6 km²

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