Ontologia

Governorate · yem

Dhamar

Yemen

BWhArid, desert, hot(60 %)

Species observed

459

Observations

1 475

Area

7 590,6km²

Ecological tissue

Sample of 35 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 Dhamar : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 5 types (connectance 8.9%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
53
Connectance
0.089
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

459 distinct species · 1 475 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 475 obs · 108 cellules
Obs. / cellule
≥ 102
38–101
10–37
4–9
< 4

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

Climate

Mean T°

19,6°C

Annual rain

540mm

Warmest m°

28,5°C

Coldest m°

9,6°C

Elevation: 1 939 m on average (min 245 m, max 2 992 m)

Bioclimatic detailsExpert
Annual mean temp.
19,6°C
Annual rain
540mm
Warmest month
28,5°C
Coldest month
9,6°C
Mean alt.
1 939m
Min
245m
Max
2 992m
Std. dev.
579m
Köppen-Geiger (dominant)
BWhArid, desert, hot(60 %)Arid

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

7,9

Org. C

16,3g/kg

Clay

30,1%

Sand

31,4%

Silt

38,5%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
21,7g/kg
Clay
27,9%
Sand
33,6%
Silt
38,5%
5–15 cm
pH H₂O
7,9
Org. C
14,6g/kg
Clay
29,6%
Sand
31,2%
Silt
39,3%
15–30 cm
pH H₂O
7,9
Org. C
12,6g/kg
Clay
32,9%
Sand
29,3%
Silt
37,9%

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

Land cover

Forest4.9%
Crops14.1%
Built-up0.1%
Bare soil19.1%
Other (grassland, water…)61.8%

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

Hydrology23 basins · 0 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

188,5km

Basins crossed

23

Max stream order

4

Max drainage

6 731km²

Discharge in basins

24,1m³/s

Mean precip.

328mm/an

Mean T°

19,3°C

Moisture idx

-0,81

Mean runoff

45mm/an

Mean elev. (basins)

1 880m

Watersheds crossing here

14 more basins

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

Human pressure

Pop. density

2hab/km²

Night light

0,1nW

Built-up

13,0%

Pesticides

0,7kg/km²

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

Protected areas1

IUCN Not Reported · 1

Utomah PA

IUCN Not Reported

Protected Area · 1999

449 km²

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

Sub-administrations12