Ontologia

Governorate · yem

Al Mahrah

Yemen

BWhArid, desert, hot(100 %)

Species observed

388

Observations

1 310

Area

65 689,6km²

Ecological tissue

Sample of 6 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 Al Mahrah : 5 espèces reliées par 4 interactions GloBI sur 1 type (connectance 26.7%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
6
Interactions affichées
4
Connectance
0.267
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

388 distinct species · 1 310 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 310 obs · 24 cellules
Obs. / cellule
≥ 768
57–767
12–56
6–11
< 6

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

Climate

Mean T°

25,7°C

Annual rain

66mm

Warmest m°

37,4°C

Coldest m°

12,5°C

Elevation: 620 m on average (min -295 m, max 1 376 m)

Bioclimatic detailsExpert
Annual mean temp.
25,7°C
Annual rain
66mm
Warmest month
37,4°C
Coldest month
12,5°C
Mean alt.
620m
Min
-295m
Max
1 376m
Std. dev.
268m
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

7,4g/kg

Clay

14,9%

Sand

50,9%

Silt

34,2%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,1
Org. C
7,8g/kg
Clay
14,8%
Sand
50,8%
Silt
34,4%
5–15 cm
pH H₂O
8,1
Org. C
7,1g/kg
Clay
14,5%
Sand
51,2%
Silt
34,3%
15–30 cm
pH H₂O
8,1
Org. C
7,3g/kg
Clay
15,4%
Sand
50,7%
Silt
33,9%

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

Land cover

Forest0.6%
Crops0.2%
Built-up0.0%
Bare soil89.3%
Other (grassland, water…)9.9%

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

Hydrology127 basins · 2 lakes · 39 rivers

Hydrology metrics for this exact territory

Stream length here

1 796,6km

Lake surface here

0,40km²

Basins crossed

127

Max stream order

6

Max drainage

46 349km²

Discharge in basins

16,8m³/s

Mean precip.

80mm/an

Mean T°

24,0°C

Moisture idx

-0,95

Mean runoff

20mm/an

Mean elev. (basins)

609m

Watersheds crossing here

118 more basins

Lakes (2, top by area)

Rivers / streams (39, ord ≥ 4)

27 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

0,7%

Pesticides

0,0kg/km²

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

Protected areas1

IUCN Not Reported · 1🌊 Marine · 1

Hawf PA

IUCN Not Reported

Protected Area · 2005

295 km²

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

Sub-administrations9