Ontologia

District · YEM

Hajr

Yemen

BWhArid, desert, hot(100 %)

Species observed

91

Observations

276

Area

3 257,1km²

Ecological tissue

Sample of 4 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 Hajr : 3 espèces reliées par 3 interactions GloBI sur 2 types (connectance 50.0%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
4
Interactions affichées
3
Connectance
0.500
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

91 distinct species · 276 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

276 obs · 23 cellules
Obs. / cellule
≥ 49
39–48
12–38
6–11
< 6

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

Climate

Mean T°

24,9°C

Annual rain

164mm

Warmest m°

33,4°C

Coldest m°

14,2°C

Elevation: 790 m on average (min 221 m, max 1 845 m)

Bioclimatic detailsExpert
Annual mean temp.
24,9°C
Annual rain
164mm
Warmest month
33,4°C
Coldest month
14,2°C
Mean alt.
790m
Min
221m
Max
1 845m
Std. dev.
283m
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

11,7g/kg

Clay

16,1%

Sand

42,8%

Silt

41,1%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
13,1g/kg
Clay
15,2%
Sand
43,4%
Silt
41,4%
5–15 cm
pH H₂O
8,0
Org. C
10,6g/kg
Clay
16,1%
Sand
42,9%
Silt
41,0%
15–30 cm
pH H₂O
8,0
Org. C
11,3g/kg
Clay
16,9%
Sand
42,1%
Silt
41,0%

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

Land cover

Forest0.5%
Crops0.5%
Built-up0.0%
Bare soil78.4%
Other (grassland, water…)20.6%

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

Hydrology9 basins · 0 lakes · 7 rivers

Hydrology metrics for this exact territory

Stream length here

129,3km

Basins crossed

9

Max stream order

4

Max drainage

9 220km²

Discharge in basins

4,9m³/s

Mean precip.

72mm/an

Mean T°

22,2°C

Moisture idx

-0,95

Mean runoff

13mm/an

Mean elev. (basins)

882m

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

0,1%

Pesticides

0,1kg/km²

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