Ontologia

Province · dza

Bordj Bou Arréridj

Algeria

BSkArid, steppe, cold(62 %)

Species observed

1 059

Observations

19 105

Area

3 936km²

Ecological tissue

Sample of 23 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 Arréridj : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 2 types (connectance 14.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
41
Connectance
0.149
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

1 059 distinct species · 19 105 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

19 105 obs · 99 cellules
Obs. / cellule
≥ 4 157
302–4 156
52–301
20–51
< 20

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

Climate

Mean T°

15,0°C

Annual rain

442mm

Warmest m°

33,3°C

Coldest m°

0,7°C

Elevation: 966 m on average (min 320 m, max 1 724 m)

Bioclimatic detailsExpert
Annual mean temp.
15,0°C
Annual rain
442mm
Warmest month
33,3°C
Coldest month
0,7°C
Mean alt.
966m
Min
320m
Max
1 724m
Std. dev.
218m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(62 %)Arid

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

19,6g/kg

Clay

26,0%

Sand

38,6%

Silt

35,4%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,3
Org. C
29,9g/kg
Clay
25,1%
Sand
38,9%
Silt
36,1%
5–15 cm
pH H₂O
7,5
Org. C
15,7g/kg
Clay
25,5%
Sand
38,7%
Silt
35,8%
15–30 cm
pH H₂O
7,5
Org. C
13,3g/kg
Clay
27,4%
Sand
38,2%
Silt
34,4%

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

Land cover

Forest7.2%
Crops25.2%
Built-up0.8%
Bare soil8.6%
Other (grassland, water…)58.3%

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

Hydrology18 basins · 2 lakes · 43 rivers

Hydrology metrics for this exact territory

Stream length here

399,6km

Lake surface here

4,98km²

Basins crossed

18

Max stream order

4

Max drainage

25 882km²

Discharge in basins

20,3m³/s

Mean precip.

460mm/an

Mean T°

14,5°C

Moisture idx

-0,61

Max snow

2%

Mean runoff

105mm/an

Mean elev. (basins)

887m

Watersheds crossing here

9 more basins

Lakes (2, top by area)

Rivers / streams (43, ord ≥ 4)

31 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

2,9nW

Built-up

81,2%

Pesticides

10,8kg/km²

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

Sub-administrations34