Ontologia

District · YEM

Nihm

Yemen

BWhArid, desert, hot(92 %)

Species observed

33

Observations

40

Area

1 841,9km²

Ecological tissue

Sample of 12 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 Nihm : 11 espèces reliées par 12 interactions GloBI sur 1 type (connectance 18.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
12
Interactions affichées
12
Connectance
0.182
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

33 distinct species · 40 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

40 obs · 2 cellules
Obs. / cellule
≥ 22
22–21
22–21
22–21
< 22

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

Climate

Mean T°

20,1°C

Annual rain

115mm

Warmest m°

29,9°C

Coldest m°

6,8°C

Elevation: 2 053 m on average (min 1 333 m, max 2 885 m)

Bioclimatic detailsExpert
Annual mean temp.
20,1°C
Annual rain
115mm
Warmest month
29,9°C
Coldest month
6,8°C
Mean alt.
2 053m
Min
1 333m
Max
2 885m
Std. dev.
298m
Köppen-Geiger (dominant)
BWhArid, desert, hot(92 %)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

14,1g/kg

Clay

20,9%

Sand

51,0%

Silt

28,1%

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

Dominant lithology: vbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
17,0g/kg
Clay
20,5%
Sand
51,4%
Silt
28,1%
5–15 cm
pH H₂O
8,0
Org. C
12,6g/kg
Clay
21,2%
Sand
50,9%
Silt
27,9%
15–30 cm
pH H₂O
8,0
Org. C
12,7g/kg
Clay
21,0%
Sand
50,7%
Silt
28,3%

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

Land cover

Forest0.6%
Crops1.1%
Built-up0.0%
Bare soil79.1%
Other (grassland, water…)19.2%

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

Hydrology10 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

4,0km

Basins crossed

10

Max stream order

1

Max drainage

12 833km²

Discharge in basins

0,7m³/s

Mean precip.

179mm/an

Mean T°

18,6°C

Moisture idx

-0,89

Mean runoff

8mm/an

Mean elev. (basins)

1 789m

Watersheds crossing here

1 more basins

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

1,2%

Pesticides

0,2kg/km²

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