Ontologia

Governorate · SAU

Riyadh

Saudi Arabia

BWhArid, desert, hot(100 %)

Species observed

1 137

Observations

19 536

Area

8 515,3km²

Ecological tissue

Sample of 24 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 Riyadh : 18 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 3 types (connectance 15.9%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
44
Connectance
0.159
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

1 137 distinct species · 19 536 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

19 536 obs · 95 cellules
Obs. / cellule
≥ 6 480
293–6 479
52–292
17–51
< 17

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

Climate

Mean T°

25,9°C

Annual rain

110mm

Warmest m°

42,1°C

Coldest m°

6,7°C

Elevation: 606 m on average (min 432 m, max 946 m)

Bioclimatic detailsExpert
Annual mean temp.
25,9°C
Annual rain
110mm
Warmest month
42,1°C
Coldest month
6,7°C
Mean alt.
606m
Min
432m
Max
946m
Std. dev.
72m
Köppen-Geiger (dominant)
BWhArid, desert, hot(100 %)Arid

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

Soil & lithology

pH H₂O

8,0

Org. C

3,7g/kg

Clay

22,9%

Sand

46,2%

Silt

30,9%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
4,3g/kg
Clay
22,1%
Sand
47,1%
Silt
30,7%
5–15 cm
pH H₂O
8,0
Org. C
3,2g/kg
Clay
23,3%
Sand
45,6%
Silt
31,1%
15–30 cm
pH H₂O
8,0
Org. C
3,6g/kg
Clay
23,3%
Sand
45,9%
Silt
30,8%

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

Land cover

Forest0.2%
Crops0.6%
Built-up3.8%
Bare soil88.4%
Other (grassland, water…)7.0%

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

Hydrology21 basins · 1 lakes · 65 rivers

Hydrology metrics for this exact territory

Stream length here

1 254,9km

Lake surface here

0,31km²

Basins crossed

21

Max stream order

5

Max drainage

7 569km²

Discharge in basins

0,4m³/s

Mean precip.

109mm/an

Mean T°

25,1°C

Moisture idx

-0,94

Mean runoff

20mm/an

Mean elev. (basins)

596m

Watersheds crossing here

12 more basins

Lakes (1, top by area)

Rivers / streams (65, ord ≥ 4)

53 more river segments

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

Human pressure

Pop. density

7hab/km²

Night light

24,6nW

Built-up

376,3%

Pesticides

35,5kg/km²

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

Protected areas3

IUCN VI · 2IUCN Not Reported · 1

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