Ontologia

Subdivision · EGY

Siwa

Egypt

BWhArid, desert, hot(100 %)

Species observed

281

Observations

1 961

Area

37 900km²

Ecological tissue

Sample of 33 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 Siwa : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 48 interactions GloBI sur 4 types (connectance 9.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
48
Connectance
0.091
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

281 distinct species · 1 961 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 961 obs · 71 cellules
Obs. / cellule
≥ 1 049
35–1 048
4–34
1–3
< 1

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

Climate

Mean T°

21,5°C

Annual rain

7mm

Warmest m°

35,4°C

Coldest m°

5,6°C

Elevation: 120 m on average (min -18 m, max 205 m)

Bioclimatic detailsExpert
Annual mean temp.
21,5°C
Annual rain
7mm
Warmest month
35,4°C
Coldest month
5,6°C
Mean alt.
120m
Min
-18m
Max
205m
Std. dev.
43m
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

5,4g/kg

Clay

30,0%

Sand

49,8%

Silt

20,2%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,1
Org. C
6,3g/kg
Clay
29,8%
Sand
49,8%
Silt
20,4%
5–15 cm
pH H₂O
8,1
Org. C
5,5g/kg
Clay
30,0%
Sand
49,7%
Silt
20,3%
15–30 cm
pH H₂O
8,1
Org. C
4,3g/kg
Clay
30,1%
Sand
49,9%
Silt
20,0%

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

Land cover

Forest0.1%
Crops0.1%
Built-up0.0%
Bare soil99.3%
Other (grassland, water…)0.5%

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

Hydrology73 basins · 12 lakes · 0 rivers

Hydrology metrics for this exact territory

Lake surface here

84,37km²

Basins crossed

73

Max drainage

18 019km²

Discharge in basins

0,0m³/s

Mean precip.

5mm/an

Mean T°

21,1°C

Moisture idx

-1,00

Mean runoff

0mm/an

Mean elev. (basins)

120m

Watersheds crossing here

64 more basins

Lakes (12, top by area)

3 more lakes

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

0,6%

Pesticides

0,0kg/km²

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

Protected areas1

IUCN VI · 1

Siwa

IUCN VI

Multiple Use Management Area · 2002

7 697 km²

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