Ontologia

Chef-Lieu-Wilaya · DZA

Bejaia

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

1 040

Observations

6 100

Area

118,5km²

Ecological tissue

Sample of 52 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 Bejaia : 35 espèces reliées par 95 interactions GloBI sur 5 types (connectance 7.2%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
52
Interactions affichées
95
Connectance
0.072
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

1 040 distinct species · 6 100 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 100 obs · 4 cellules
Obs. / cellule
≥ 3 487
3 487–3 486
1 921–3 486
1 921–1 920
< 1 921

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

Climate

Mean T°

17,5°C

Annual rain

798mm

Warmest m°

28,0°C

Coldest m°

8,1°C

Elevation: 195 m on average (min -40 m, max 455 m)

Bioclimatic detailsExpert
Annual mean temp.
17,5°C
Annual rain
798mm
Warmest month
28,0°C
Coldest month
8,1°C
Mean alt.
195m
Min
-40m
Max
455m
Std. dev.
120m
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

6,5

Org. C

35,9g/kg

Clay

33,9%

Sand

34,3%

Silt

31,8%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,5
Org. C
59,7g/kg
Clay
34,3%
Sand
34,1%
Silt
31,6%
5–15 cm
pH H₂O
6,5
Org. C
27,8g/kg
Clay
33,8%
Sand
34,0%
Silt
32,2%
15–30 cm
pH H₂O
6,5
Org. C
20,1g/kg
Clay
33,6%
Sand
34,7%
Silt
31,7%

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

Land cover

Forest22.9%
Crops7.2%
Built-up4.9%
Bare soil3.4%
Other (grassland, water…)61.7%

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

Hydrology3 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

15,0km

Basins crossed

3

Max stream order

6

Max drainage

9 125km²

Discharge in basins

1,4m³/s

Mean precip.

882mm/an

Mean T°

16,7°C

Moisture idx

-0,14

Max snow

2%

Mean runoff

272mm/an

Mean elev. (basins)

309m

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

Human pressure

Pop. density

12hab/km²

Night light

11,9nW

Built-up

489,3%

Pesticides

8,3kg/km²

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

Protected areas3

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

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