Ontologia

Commune · DZA

El H'Madna

Algeria

BShArid, steppe, hot(75 %)

Species observed

82

Observations

141

Area

121km²

Ecological tissue

Sample of 40 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 El H'Madna : 37 espèces reliées par 49 interactions GloBI sur 5 types (connectance 6.3%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
49
Connectance
0.063
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

82 distinct species · 141 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

141 obs · 4 cellules
Obs. / cellule
≥ 118
118–117
12–117
12–11
< 12

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

Climate

Mean T°

19,3°C

Annual rain

333mm

Warmest m°

36,3°C

Coldest m°

5,8°C

Elevation: 102 m on average (min 42 m, max 214 m)

Bioclimatic detailsExpert
Annual mean temp.
19,3°C
Annual rain
333mm
Warmest month
36,3°C
Coldest month
5,8°C
Mean alt.
102m
Min
42m
Max
214m
Std. dev.
47m
Köppen-Geiger (dominant)
BShArid, steppe, hot(75 %)Arid

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

Soil & lithology

pH H₂O

7,6

Org. C

14,1g/kg

Clay

32,1%

Sand

27,5%

Silt

40,4%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
20,3g/kg
Clay
31,8%
Sand
27,5%
Silt
40,7%
5–15 cm
pH H₂O
7,6
Org. C
12,4g/kg
Clay
32,2%
Sand
27,5%
Silt
40,3%
15–30 cm
pH H₂O
7,7
Org. C
9,5g/kg
Clay
32,2%
Sand
27,6%
Silt
40,2%

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

Land cover

Forest1.7%
Crops65.2%
Built-up1.0%
Bare soil3.8%
Other (grassland, water…)28.3%

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

Hydrology2 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

4,3km

Basins crossed

2

Max stream order

1

Max drainage

35 991km²

Discharge in basins

3,1m³/s

Mean precip.

423mm/an

Mean T°

17,2°C

Moisture idx

-0,59

Mean runoff

38mm/an

Mean elev. (basins)

296m

Watersheds crossing here

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

Human pressure

Pop. density

2hab/km²

Night light

1,8nW

Built-up

97,6%

Pesticides

17,1kg/km²

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