Ontologia

District · YEM

Sayun

Yemen

BWhArid, desert, hot(100 %)

Species observed

36

Observations

74

Area

801,4km²

Ecological tissue

Sample of 5 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 Sayun : 5 espèces reliées par 3 interactions GloBI sur 2 types (connectance 30.0%, filtre Serrano α=0.2).

Espèces affichées
5
Interactions affichées
3
Connectance
0.300
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

36 distinct species · 74 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

74 obs · 9 cellules
Obs. / cellule
≥ 57
57–56
4–56
2–3
< 2

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

Climate

Mean T°

27,1°C

Annual rain

59mm

Warmest m°

38,9°C

Coldest m°

11,4°C

Elevation: 850 m on average (min 619 m, max 1 043 m)

Bioclimatic detailsExpert
Annual mean temp.
27,1°C
Annual rain
59mm
Warmest month
38,9°C
Coldest month
11,4°C
Mean alt.
850m
Min
619m
Max
1 043m
Std. dev.
128m
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

7,9g/kg

Clay

12,4%

Sand

46,0%

Silt

41,6%

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
8,4g/kg
Clay
11,5%
Sand
46,7%
Silt
41,8%
5–15 cm
pH H₂O
8,0
Org. C
7,4g/kg
Clay
11,7%
Sand
46,5%
Silt
41,8%
15–30 cm
pH H₂O
8,0
Org. C
7,9g/kg
Clay
13,9%
Sand
44,8%
Silt
41,2%

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

Land cover

Forest2.8%
Crops3.9%
Built-up0.5%
Bare soil80.4%
Other (grassland, water…)12.4%

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

Hydrology6 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

94,2km

Basins crossed

6

Max stream order

5

Max drainage

14 220km²

Discharge in basins

0,0m³/s

Mean precip.

77mm/an

Mean T°

22,7°C

Moisture idx

-0,95

Mean runoff

8mm/an

Mean elev. (basins)

844m

Watersheds crossing here

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

Human pressure

Pop. density

2hab/km²

Night light

2,3nW

Built-up

50,7%

Pesticides

0,3kg/km²

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