Ontologia

Commune · ZAF

Overstrand

South Africa

CsbTemperate, dry summer, warm summer(99 %)

Species observed

6 826

Observations

430 078

Area

1 695,1km²

Ecological tissue

Sample of 41 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 Overstrand : 35 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 37 interactions GloBI sur 4 types (connectance 4.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
37
Connectance
0.041
Patrimoniales
4
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

6 826 distinct species · 430 078 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

430 078 obs · 48 cellules
Obs. / cellule
≥ 75 487
27 529–75 486
6 933–27 528
3 321–6 932
< 3 321

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

Climate

Mean T°

16,1°C

Annual rain

737mm

Warmest m°

23,4°C

Coldest m°

9,4°C

Elevation: 185 m on average (min -34 m, max 961 m)

Bioclimatic detailsExpert
Annual mean temp.
16,1°C
Annual rain
737mm
Warmest month
23,4°C
Coldest month
9,4°C
Mean alt.
185m
Min
-34m
Max
961m
Std. dev.
162m
Köppen-Geiger (dominant)
CsbTemperate, dry summer, warm summer(99 %)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

36,9g/kg

Clay

18,3%

Sand

67,6%

Silt

14,1%

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

Dominant lithology: ssGLiMaggregated to Overberg

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,3
Org. C
54,0g/kg
Clay
14,8%
Sand
70,6%
Silt
14,6%
5–15 cm
pH H₂O
6,3
Org. C
32,4g/kg
Clay
18,6%
Sand
67,4%
Silt
14,0%
15–30 cm
pH H₂O
6,3
Org. C
24,4g/kg
Clay
21,5%
Sand
64,8%
Silt
13,8%

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

Land cover

Forest9.8%
Crops5.0%
Built-up0.6%
Bare soil2.8%
Other (grassland, water…)81.8%

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

Hydrology8 basins · 4 lakes · 15 rivers

Hydrology metrics for this exact territory

Stream length here

180,0km

Lake surface here

1,36km²

Basins crossed

8

Max stream order

3

Max drainage

1 779km²

Discharge in basins

7,5m³/s

Mean precip.

632mm/an

Mean T°

15,8°C

Moisture idx

-0,40

Max snow

1%

Mean runoff

210mm/an

Mean elev. (basins)

193m

Watersheds crossing here

Lakes (4, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,3nW

Built-up

58,8%

Pesticides

18,2kg/km²

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

Protected areas40

IUCN Not Reported · 37IUCN Not Applicable · 1IUCN Ia · 1IUCN IV · 1🌊 Marine · 13
Complete list

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