Ontologia

Governorate · yem

Ma'rib

Yemen

BWhArid, desert, hot(100 %)

Species observed

135

Observations

312

Area

17 493,3km²

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 Ma'rib : 34 espèces reliées par 53 interactions GloBI sur 2 types (connectance 7.5%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
53
Connectance
0.075
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

135 distinct species · 312 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

312 obs · 22 cellules
Obs. / cellule
≥ 96
37–95
15–36
4–14
< 4

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

Climate

Mean T°

25,5°C

Annual rain

67mm

Warmest m°

36,9°C

Coldest m°

10,4°C

Elevation: 1 219 m on average (min 815 m, max 2 857 m)

Bioclimatic detailsExpert
Annual mean temp.
25,5°C
Annual rain
67mm
Warmest month
36,9°C
Coldest month
10,4°C
Mean alt.
1 219m
Min
815m
Max
2 857m
Std. dev.
346m
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

7,0g/kg

Clay

15,5%

Sand

55,5%

Silt

29,0%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,1
Org. C
8,4g/kg
Clay
14,7%
Sand
56,3%
Silt
29,0%
5–15 cm
pH H₂O
8,2
Org. C
6,4g/kg
Clay
15,4%
Sand
55,7%
Silt
28,9%
15–30 cm
pH H₂O
8,2
Org. C
6,3g/kg
Clay
16,4%
Sand
54,6%
Silt
29,0%

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

Land cover

Forest0.3%
Crops0.8%
Built-up0.0%
Bare soil93.6%
Other (grassland, water…)5.3%

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

Hydrology38 basins · 1 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

216,0km

Lake surface here

4,81km²

Basins crossed

38

Max stream order

5

Max drainage

23 665km²

Discharge in basins

1,4m³/s

Mean precip.

124mm/an

Mean T°

21,2°C

Moisture idx

-0,93

Mean runoff

17mm/an

Mean elev. (basins)

1 270m

Watersheds crossing here

29 more basins

Lakes (1, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,5nW

Built-up

3,3%

Pesticides

0,1kg/km²

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

Sub-administrations14