Ontologia

Commune · DZA

Tadjena

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

5

Observations

5

Area

116,3km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Species present

5 distinct species · 5 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 obs · 2 cellules
Obs. / cellule
≥ 4
4–3
4–3
4–3
< 4

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

Climate

Mean T°

17,3°C

Annual rain

439mm

Warmest m°

30,7°C

Coldest m°

6,2°C

Elevation: 411 m on average (min 226 m, max 698 m)

Bioclimatic detailsExpert
Annual mean temp.
17,3°C
Annual rain
439mm
Warmest month
30,7°C
Coldest month
6,2°C
Mean alt.
411m
Min
226m
Max
698m
Std. dev.
97m
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

7,5

Org. C

22,6g/kg

Clay

34,4%

Sand

26,9%

Silt

38,7%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
36,1g/kg
Clay
34,3%
Sand
26,7%
Silt
39,1%
5–15 cm
pH H₂O
7,6
Org. C
17,8g/kg
Clay
35,3%
Sand
26,0%
Silt
38,7%
15–30 cm
pH H₂O
7,5
Org. C
13,8g/kg
Clay
33,6%
Sand
27,9%
Silt
38,5%

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

Land cover

Forest5.0%
Crops38.1%
Built-up0.8%
Bare soil6.6%
Other (grassland, water…)49.5%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

1,8km

Basins crossed

2

Max stream order

2

Max drainage

31 923km²

Discharge in basins

3,2m³/s

Mean precip.

470mm/an

Mean T°

17,2°C

Moisture idx

-0,53

Max snow

1%

Mean runoff

43mm/an

Mean elev. (basins)

300m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

2hab/km²

Night light

1,5nW

Built-up

81,8%

Pesticides

22,4kg/km²

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