Ontologia

Commune · ZAF

Witzenberg

South Africa

CsbTemperate, dry summer, warm summer(26 %)

Species observed

7 210

Observations

252 594

Area

10 752,7km²

Ecological tissue

Sample of 30 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 Witzenberg : 25 espèces reliées par 29 interactions GloBI sur 3 types (connectance 6.7%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
29
Connectance
0.067
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

7 210 distinct species · 252 594 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

252 594 obs · 307 cellules
Obs. / cellule
≥ 11 714
1 939–11 713
454–1 938
201–453
< 201

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

Climate

Mean T°

16,3°C

Annual rain

453mm

Warmest m°

30,4°C

Coldest m°

4,0°C

Elevation: 795 m on average (min 106 m, max 1 990 m)

Bioclimatic detailsExpert
Annual mean temp.
16,3°C
Annual rain
453mm
Warmest month
30,4°C
Coldest month
4,0°C
Mean alt.
795m
Min
106m
Max
1 990m
Std. dev.
311m
Köppen-Geiger (dominant)
CsbTemperate, dry summer, warm summer(26 %)Temperate

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

Soil & lithology

pH H₂O

7,5

Org. C

17,1g/kg

Clay

17,0%

Sand

69,1%

Silt

14,0%

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

Dominant lithology: ssGLiMaggregated to Cape Winelands

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Org. C
21,4g/kg
Clay
14,5%
Sand
71,6%
Silt
13,9%
5–15 cm
pH H₂O
7,5
Org. C
16,3g/kg
Clay
16,8%
Sand
69,2%
Silt
14,0%
15–30 cm
pH H₂O
7,5
Org. C
13,5g/kg
Clay
19,6%
Sand
66,4%
Silt
14,0%

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

Land cover

Forest1.1%
Crops4.2%
Built-up0.1%
Bare soil32.2%
Other (grassland, water…)62.4%

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

Hydrology33 basins · 50 lakes · 99 rivers

Hydrology metrics for this exact territory

Stream length here

1 792,8km

Lake surface here

20,43km²

Basins crossed

33

Max stream order

5

Max drainage

7 210km²

Discharge in basins

56,5m³/s

Mean precip.

309mm/an

Mean T°

15,6°C

Moisture idx

-0,77

Mean runoff

95mm/an

Mean elev. (basins)

784m

Watersheds crossing here

24 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (99, ord ≥ 4)

87 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

7,2%

Pesticides

5,9kg/km²

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

Protected areas34

IUCN Not Reported · 33IUCN Not Applicable · 1🌊 Marine · 1
Complete list

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