Ontologia

Province · dza

Alger

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

2 619

Observations

21 916

Area

768km²

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 Alger : 38 espèces reliées par 116 interactions GloBI sur 5 types (connectance 8.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
52
Interactions affichées
116
Connectance
0.087
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

2 619 distinct species · 21 916 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

21 916 obs · 20 cellules
Obs. / cellule
≥ 7 890
2 344–7 889
1 283–2 343
760–1 282
< 760

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

Climate

Mean T°

18,3°C

Annual rain

682mm

Warmest m°

30,8°C

Coldest m°

8,3°C

Elevation: 78 m on average (min -80 m, max 318 m)

Bioclimatic detailsExpert
Annual mean temp.
18,3°C
Annual rain
682mm
Warmest month
30,8°C
Coldest month
8,3°C
Mean alt.
78m
Min
-80m
Max
318m
Std. dev.
70m
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

6,7

Org. C

23,5g/kg

Clay

31,3%

Sand

35,6%

Silt

33,1%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
35,4g/kg
Clay
31,2%
Sand
35,5%
Silt
33,3%
5–15 cm
pH H₂O
6,7
Org. C
18,9g/kg
Clay
31,6%
Sand
35,3%
Silt
33,1%
15–30 cm
pH H₂O
6,7
Org. C
16,1g/kg
Clay
31,1%
Sand
36,0%
Silt
32,9%

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

Land cover

Forest7.3%
Crops18.6%
Built-up11.4%
Bare soil2.6%
Other (grassland, water…)60.0%

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

Hydrology4 basins · 2 lakes · 16 rivers

Hydrology metrics for this exact territory

Stream length here

128,7km

Lake surface here

1,16km²

Basins crossed

4

Max stream order

5

Max drainage

2 039km²

Discharge in basins

4,1m³/s

Mean precip.

717mm/an

Mean T°

16,8°C

Moisture idx

-0,34

Max snow

2%

Mean runoff

190mm/an

Mean elev. (basins)

309m

Watersheds crossing here

Lakes (2, top by area)

Rivers / streams (16, ord ≥ 4)

4 more river segments

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

Human pressure

Pop. density

32hab/km²

Night light

46,3nW

Built-up

1 141,2%

Pesticides

20,7kg/km²

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

Protected areas1

IUCN Not Reported · 1🌊 Marine · 1

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

Sub-administrations24