Ontologia

Province · dza

Béjaïa

Algeria

CsaTemperate, dry summer, hot summer(98 %)

Species observed

1 904

Observations

13 659

Area

3 226,1km²

Ecological tissue

Sample of 43 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 Béjaïa : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 117 interactions GloBI sur 5 types (connectance 12.4%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
117
Connectance
0.124
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

1 904 distinct species · 13 659 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

13 659 obs · 85 cellules
Obs. / cellule
≥ 3 487
216–3 486
77–215
42–76
< 42

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

738mm

Warmest m°

30,8°C

Coldest m°

3,9°C

Elevation: 532 m on average (min -60 m, max 1 635 m)

Bioclimatic detailsExpert
Annual mean temp.
16,1°C
Annual rain
738mm
Warmest month
30,8°C
Coldest month
3,9°C
Mean alt.
532m
Min
-60m
Max
1 635m
Std. dev.
317m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(98 %)Temperate

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

Soil & lithology

pH H₂O

6,7

Org. C

32,5g/kg

Clay

33,0%

Sand

33,4%

Silt

33,6%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
51,1g/kg
Clay
33,3%
Sand
33,2%
Silt
33,5%
5–15 cm
pH H₂O
6,7
Org. C
26,5g/kg
Clay
33,0%
Sand
33,1%
Silt
33,9%
15–30 cm
pH H₂O
6,7
Org. C
19,9g/kg
Clay
32,7%
Sand
33,8%
Silt
33,5%

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

Land cover

Forest22.4%
Crops10.0%
Built-up1.4%
Bare soil3.5%
Other (grassland, water…)62.6%

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

Hydrology16 basins · 1 lakes · 38 rivers

Hydrology metrics for this exact territory

Stream length here

474,7km

Lake surface here

2,13km²

Basins crossed

16

Max stream order

6

Max drainage

9 125km²

Discharge in basins

67,0m³/s

Mean precip.

768mm/an

Mean T°

15,6°C

Moisture idx

-0,29

Max snow

4%

Mean runoff

221mm/an

Mean elev. (basins)

576m

Watersheds crossing here

7 more basins

Lakes (1, top by area)

Rivers / streams (38, ord ≥ 4)

26 more river segments

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

Human pressure

Pop. density

2hab/km²

Night light

3,2nW

Built-up

143,2%

Pesticides

13,6kg/km²

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

Protected areas6

IUCN II · 3IUCN Not Applicable · 2IUCN Not Reported · 1🌊 Marine · 3

Djurdjura

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1997

380 km²

Djurdjura

IUCN II

National Park · 1983

202 km²

Gouraya

IUCN II

National Park · 1984

21 km²

Gouraya

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 2004

21 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

Sub-administrations46