Ontologia

Province · zaf

Free State

South Africa

BSkArid, steppe, cold(58 %)

Species observed

13 243

Observations

2 370 762

Area

129 825,2km²

Ecological tissue

Sample of 19 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 Free State : 18 espèces reliées par 13 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
19
Interactions affichées
13
Connectance
0.076
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

13 243 distinct species · 2 370 762 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 370 762 obs · 69 cellules
Obs. / cellule
≥ 320 869
79 858–320 868
29 059–79 857
16 361–29 058
< 16 361

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

16,1°C

Annual rain

593mm

Warmest m°

28,4°C

Coldest m°

1,7°C

Elevation: 1 454 m on average (min 1 083 m, max 3 193 m)

Bioclimatic detailsExpert
Annual mean temp.
16,1°C
Annual rain
593mm
Warmest month
28,4°C
Coldest month
1,7°C
Mean alt.
1 454m
Min
1 083m
Max
3 193m
Std. dev.
178m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(58 %)Arid

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

11,1g/kg

Clay

25,5%

Sand

59,9%

Silt

14,5%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
15,0g/kg
Clay
23,7%
Sand
61,4%
Silt
14,8%
5–15 cm
pH H₂O
6,9
Org. C
10,2g/kg
Clay
22,8%
Sand
62,2%
Silt
14,9%
15–30 cm
pH H₂O
7,0
Org. C
8,0g/kg
Clay
30,1%
Sand
56,2%
Silt
13,8%

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

Land cover

Forest2.9%
Crops35.6%
Built-up0.2%
Bare soil4.3%
Other (grassland, water…)57.0%

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

Hydrology242 basins · 50 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

9 856,3km

Lake surface here

735,48km²

Basins crossed

242

Max stream order

6

Max drainage

117 398km²

Discharge in basins

2 962,4m³/s

Mean precip.

581mm/an

Mean T°

15,7°C

Moisture idx

-0,61

Mean runoff

27mm/an

Mean elev. (basins)

1 459m

Watersheds crossing here

233 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (100, ord ≥ 4)

88 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

20,3%

Pesticides

27,6kg/km²

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

Protected areas100

IUCN Not Reported · 97IUCN Not Applicable · 2IUCN IV · 1

Vredefort Dome

IUCN Not Applicable

World Heritage Site (natural or mixed) · 2005

314 km²

Complete list

+ 40 protected areas (top 60 shown)

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

Sub-administrations5