Ontologia

District · YEM

Haydan

Yemen

BWhArid, desert, hot(91 %)

Species observed

19

Observations

24

Area

568,6km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Species present

19 distinct species · 24 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

24 obs · 6 cellules
Obs. / cellule
≥ 14
14–13
3–13
2–2
< 2

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

Climate

Mean T°

20,2°C

Annual rain

847mm

Warmest m°

27,9°C

Coldest m°

10,7°C

Elevation: 1 667 m on average (min 517 m, max 2 511 m)

Bioclimatic detailsExpert
Annual mean temp.
20,2°C
Annual rain
847mm
Warmest month
27,9°C
Coldest month
10,7°C
Mean alt.
1 667m
Min
517m
Max
2 511m
Std. dev.
438m
Köppen-Geiger (dominant)
BWhArid, desert, hot(91 %)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

13,5g/kg

Clay

23,2%

Sand

42,1%

Silt

34,8%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,1
Org. C
16,3g/kg
Clay
21,0%
Sand
43,8%
Silt
35,2%
5–15 cm
pH H₂O
8,1
Org. C
12,8g/kg
Clay
23,1%
Sand
42,1%
Silt
34,8%
15–30 cm
pH H₂O
8,0
Org. C
11,4g/kg
Clay
25,3%
Sand
40,3%
Silt
34,3%

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

Land cover

Forest5.6%
Crops5.2%
Built-up0.0%
Bare soil34.8%
Other (grassland, water…)54.4%

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

Hydrology4 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

30,1km

Basins crossed

4

Max stream order

3

Max drainage

1 873km²

Discharge in basins

0,3m³/s

Mean precip.

144mm/an

Mean T°

23,5°C

Moisture idx

-0,91

Mean runoff

19mm/an

Mean elev. (basins)

1 136m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

0,0nW

Built-up

0,4%

Pesticides

0,2kg/km²

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