Ontologia

Governorate · yem

Sa`dah

Yemen

BWhArid, desert, hot(93 %)

Species observed

104

Observations

378

Area

12 377,2km²

Ecological tissue

Sample of 38 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 Sa`dah : 31 espèces reliées par 50 interactions GloBI sur 5 types (connectance 7.1%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
50
Connectance
0.071
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Species present

104 distinct species · 378 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

378 obs · 66 cellules
Obs. / cellule
≥ 22
17–21
7–16
3–6
< 3

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

Climate

Mean T°

21,3°C

Annual rain

399mm

Warmest m°

31,7°C

Coldest m°

8,5°C

Elevation: 1 735 m on average (min 245 m, max 2 749 m)

Bioclimatic detailsExpert
Annual mean temp.
21,3°C
Annual rain
399mm
Warmest month
31,7°C
Coldest month
8,5°C
Mean alt.
1 735m
Min
245m
Max
2 749m
Std. dev.
412m
Köppen-Geiger (dominant)
BWhArid, desert, hot(93 %)Arid

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

Soil & lithology

pH H₂O

8,2

Org. C

8,6g/kg

Clay

20,6%

Sand

46,6%

Silt

32,8%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,2
Org. C
9,7g/kg
Clay
18,9%
Sand
47,9%
Silt
33,2%
5–15 cm
pH H₂O
8,3
Org. C
8,0g/kg
Clay
20,0%
Sand
47,1%
Silt
32,9%
15–30 cm
pH H₂O
8,2
Org. C
8,0g/kg
Clay
22,8%
Sand
44,9%
Silt
32,2%

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

Land cover

Forest2.1%
Crops3.0%
Built-up0.0%
Bare soil69.8%
Other (grassland, water…)25.1%

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

Hydrology31 basins · 0 lakes · 32 rivers

Hydrology metrics for this exact territory

Stream length here

511,4km

Basins crossed

31

Max stream order

4

Max drainage

26 785km²

Discharge in basins

6,4m³/s

Mean precip.

158mm/an

Mean T°

21,1°C

Moisture idx

-0,91

Mean runoff

19mm/an

Mean elev. (basins)

1 578m

Watersheds crossing here

22 more basins

Rivers / streams (32, ord ≥ 4)

20 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

0,1nW

Built-up

3,2%

Pesticides

0,7kg/km²

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

Protected areas1

IUCN Not Reported · 1🌊 Marine · 1

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

Sub-administrations15