Ontologia

Province · sau

Ar Riyad

Saudi Arabia

BWhArid, desert, hot(100 %)

Species observed

2 090

Observations

106 340

Area

378 367,9km²

Ecological tissue

Sample of 29 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 Ar Riyad : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 4 types (connectance 8.0%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
35
Connectance
0.081
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

2 090 distinct species · 106 340 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

106 340 obs · 151 cellules
Obs. / cellule
≥ 10 895
1 211–10 894
29–1 210
8–28
< 8

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

Climate

Mean T°

26,2°C

Annual rain

99mm

Warmest m°

41,5°C

Coldest m°

7,6°C

Elevation: 715 m on average (min 288 m, max 1 308 m)

Bioclimatic detailsExpert
Annual mean temp.
26,2°C
Annual rain
99mm
Warmest month
41,5°C
Coldest month
7,6°C
Mean alt.
715m
Min
288m
Max
1 308m
Std. dev.
189m
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

8,1

Org. C

3,9g/kg

Clay

22,5%

Sand

45,3%

Silt

32,3%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,1
Org. C
4,2g/kg
Clay
21,5%
Sand
46,3%
Silt
32,2%
5–15 cm
pH H₂O
8,1
Org. C
3,5g/kg
Clay
22,6%
Sand
45,0%
Silt
32,4%
15–30 cm
pH H₂O
8,1
Org. C
4,0g/kg
Clay
23,4%
Sand
44,5%
Silt
32,1%

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

Land cover

Forest0.1%
Crops0.9%
Built-up0.1%
Bare soil97.3%
Other (grassland, water…)1.5%

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

Hydrology613 basins · 3 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

11 408,5km

Lake surface here

0,94km²

Basins crossed

613

Max stream order

7

Max drainage

158 918km²

Discharge in basins

4 100,7m³/s

Mean precip.

102mm/an

Mean T°

25,3°C

Moisture idx

-0,95

Mean runoff

15mm/an

Mean elev. (basins)

714m

Watersheds crossing here

604 more basins

Lakes (3, top by area)

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

1,1nW

Built-up

15,3%

Pesticides

13,6kg/km²

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

Protected areas26

IUCN VI · 12IUCN II · 11IUCN Not Applicable · 1IUCN Not Reported · 1IUCN III · 1

'Uruq Bani Ma'arid

IUCN Not Applicable

World Heritage Site (natural or mixed) · 2023

12 679 km²

Complete list

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

Sub-administrations24