Ontologia

Chef-Lieu-Wilaya · DZA

Bordj Bou Arreridj

Algeria

BSkArid, steppe, cold(100 %)

Species observed

229

Observations

657

Area

82,2km²

Ecological tissue

Sample of 28 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 Bordj Bou Arreridj : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 8.5%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
32
Connectance
0.085
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

229 distinct species · 657 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

657 obs · 2 cellules
Obs. / cellule
≥ 355
355–354
355–354
355–354
< 355

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

Climate

Mean T°

15,3°C

Annual rain

405mm

Warmest m°

33,8°C

Coldest m°

1,1°C

Elevation: 924 m on average (min 845 m, max 1 005 m)

Bioclimatic detailsExpert
Annual mean temp.
15,3°C
Annual rain
405mm
Warmest month
33,8°C
Coldest month
1,1°C
Mean alt.
924m
Min
845m
Max
1 005m
Std. dev.
40m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(100 %)Arid

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

Soil & lithology

pH H₂O

7,7

Org. C

15,7g/kg

Clay

25,4%

Sand

37,5%

Silt

37,1%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,6
Org. C
24,5g/kg
Clay
24,2%
Sand
37,9%
Silt
38,0%
5–15 cm
pH H₂O
7,8
Org. C
12,7g/kg
Clay
24,6%
Sand
37,8%
Silt
37,6%
15–30 cm
pH H₂O
7,8
Org. C
10,0g/kg
Clay
27,3%
Sand
36,9%
Silt
35,8%

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

Land cover

Forest1.5%
Crops31.5%
Built-up7.2%
Bare soil9.4%
Other (grassland, water…)50.5%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

0,4km

Basins crossed

2

Max stream order

1

Max drainage

936km²

Discharge in basins

0,3m³/s

Mean precip.

422mm/an

Mean T°

14,5°C

Moisture idx

-0,64

Max snow

1%

Mean runoff

104mm/an

Mean elev. (basins)

976m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

18hab/km²

Night light

30,3nW

Built-up

714,6%

Pesticides

16,7kg/km²

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