Ontologia

Commune · ZAF

Hessequa

South Africa

BSkArid, steppe, cold(75 %)

Species observed

6 086

Observations

303 278

Area

5 737km²

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 Hessequa : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 21 interactions GloBI sur 4 types (connectance 4.8%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
21
Connectance
0.048
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

6 086 distinct species · 303 278 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

303 278 obs · 165 cellules
Obs. / cellule
≥ 28 989
3 466–28 988
1 865–3 465
671–1 864
< 671

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

Climate

Mean T°

16,7°C

Annual rain

538mm

Warmest m°

25,5°C

Coldest m°

7,5°C

Elevation: 229 m on average (min -28 m, max 1 110 m)

Bioclimatic detailsExpert
Annual mean temp.
16,7°C
Annual rain
538mm
Warmest month
25,5°C
Coldest month
7,5°C
Mean alt.
229m
Min
-28m
Max
1 110m
Std. dev.
172m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(75 %)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

23,8g/kg

Clay

23,5%

Sand

60,2%

Silt

16,3%

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

Dominant lithology: ssGLiMaggregated to Eden

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
35,2g/kg
Clay
21,6%
Sand
61,8%
Silt
16,6%
5–15 cm
pH H₂O
6,9
Org. C
21,7g/kg
Clay
23,1%
Sand
60,7%
Silt
16,2%
15–30 cm
pH H₂O
7,0
Org. C
14,5g/kg
Clay
25,9%
Sand
58,1%
Silt
16,0%

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

Land cover

Forest4.3%
Crops16.9%
Built-up0.1%
Bare soil5.9%
Other (grassland, water…)72.7%

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

Hydrology13 basins · 2 lakes · 23 rivers

Hydrology metrics for this exact territory

Stream length here

644,4km

Lake surface here

1,12km²

Basins crossed

13

Max stream order

6

Max drainage

45 082km²

Discharge in basins

59,7m³/s

Mean precip.

466mm/an

Mean T°

16,8°C

Moisture idx

-0,65

Mean runoff

41mm/an

Mean elev. (basins)

241m

Watersheds crossing here

4 more basins

Lakes (2, top by area)

Rivers / streams (23, ord ≥ 4)

11 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

12,1%

Pesticides

22,7kg/km²

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

Protected areas34

IUCN Not Reported · 33IUCN Not Applicable · 1🌊 Marine · 7
Complete list

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