Ontologia

Commune · DZA

Ben Djerrah

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

13

Observations

67

Area

77,6km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

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 Ben Djerrah : 4 espèces reliées par 3 interactions GloBI sur 2 types (connectance 50.0%, filtre Serrano α=0.2).

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

13 distinct species · 67 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

67 obs · 1 cellules
Obs. / cellule
≥ 67
67–66
67–66
67–66
< 67

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

Climate

Mean T°

16,1°C

Annual rain

623mm

Warmest m°

33,0°C

Coldest m°

2,6°C

Elevation: 633 m on average (min 275 m, max 1 257 m)

Bioclimatic detailsExpert
Annual mean temp.
16,1°C
Annual rain
623mm
Warmest month
33,0°C
Coldest month
2,6°C
Mean alt.
633m
Min
275m
Max
1 257m
Std. dev.
219m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(100 %)Temperate

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

Soil & lithology

pH H₂O

7,1

Org. C

23,3g/kg

Clay

34,2%

Sand

29,1%

Silt

36,6%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
36,2g/kg
Clay
34,2%
Sand
29,2%
Silt
36,6%
5–15 cm
pH H₂O
7,1
Org. C
20,9g/kg
Clay
34,6%
Sand
28,7%
Silt
36,6%
15–30 cm
pH H₂O
7,1
Org. C
12,9g/kg
Clay
33,9%
Sand
29,4%
Silt
36,7%

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

Land cover

Forest19.7%
Crops15.8%
Built-up0.5%
Bare soil3.3%
Other (grassland, water…)60.7%

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

Hydrology3 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

5,8km

Basins crossed

3

Max stream order

5

Max drainage

4 848km²

Discharge in basins

1,1m³/s

Mean precip.

603mm/an

Mean T°

15,0°C

Moisture idx

-0,52

Max snow

1%

Mean runoff

124mm/an

Mean elev. (basins)

640m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

2,1nW

Built-up

50,8%

Pesticides

17,5kg/km²

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