Ontologia

District · YEM

Al Mahfad

Yemen

BWhArid, desert, hot(100 %)

Species observed

108

Observations

153

Area

2 760,8km²

Ecological tissue

Sample of 27 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 Mahfad : 24 espèces reliées par 23 interactions GloBI sur 4 types (connectance 6.6%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
23
Connectance
0.066
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

108 distinct species · 153 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

153 obs · 15 cellules
Obs. / cellule
≥ 47
22–46
11–21
5–10
< 5

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

Climate

Mean T°

25,8°C

Annual rain

210mm

Warmest m°

34,2°C

Coldest m°

15,6°C

Elevation: 687 m on average (min 221 m, max 2 033 m)

Bioclimatic detailsExpert
Annual mean temp.
25,8°C
Annual rain
210mm
Warmest month
34,2°C
Coldest month
15,6°C
Mean alt.
687m
Min
221m
Max
2 033m
Std. dev.
272m
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

8,0

Org. C

9,6g/kg

Clay

18,7%

Sand

41,0%

Silt

40,4%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
11,1g/kg
Clay
17,7%
Sand
41,5%
Silt
40,7%
5–15 cm
pH H₂O
8,0
Org. C
8,7g/kg
Clay
19,3%
Sand
40,7%
Silt
40,0%
15–30 cm
pH H₂O
8,0
Org. C
8,9g/kg
Clay
18,9%
Sand
40,7%
Silt
40,4%

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

Land cover

Forest0.1%
Crops1.1%
Built-up0.0%
Bare soil79.3%
Other (grassland, water…)19.6%

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

Hydrology6 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

144,8km

Basins crossed

6

Max stream order

5

Max drainage

3 944km²

Discharge in basins

2,4m³/s

Mean precip.

69mm/an

Mean T°

22,9°C

Moisture idx

-0,96

Mean runoff

30mm/an

Mean elev. (basins)

795m

Watersheds crossing here

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.)