Ontologia

Chef-Lieu-Wilaya · DZA

Blida

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

394

Observations

735

Area

53,2km²

Ecological tissue

Sample of 34 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 Blida : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 6 types (connectance 6.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
34
Connectance
0.061
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

394 distinct species · 735 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

735 obs · 2 cellules
Obs. / cellule
≥ 595
595–594
595–594
595–594
< 595

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

Climate

Mean T°

17,8°C

Annual rain

662mm

Warmest m°

31,1°C

Coldest m°

6,9°C

Elevation: 210 m on average (min 66 m, max 1 049 m)

Bioclimatic detailsExpert
Annual mean temp.
17,8°C
Annual rain
662mm
Warmest month
31,1°C
Coldest month
6,9°C
Mean alt.
210m
Min
66m
Max
1 049m
Std. dev.
141m
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

6,8

Org. C

19,4g/kg

Clay

30,7%

Sand

35,5%

Silt

33,8%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
26,6g/kg
Clay
30,8%
Sand
35,1%
Silt
34,2%
5–15 cm
pH H₂O
6,9
Org. C
18,0g/kg
Clay
31,8%
Sand
34,5%
Silt
33,6%
15–30 cm
pH H₂O
6,8
Org. C
13,5g/kg
Clay
29,6%
Sand
37,0%
Silt
33,5%

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

Land cover

Forest10.9%
Crops17.6%
Built-up9.7%
Bare soil2.8%
Other (grassland, water…)59.1%

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

Hydrology1 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

3,6km

Basins crossed

1

Max stream order

3

Max drainage

2 039km²

Discharge in basins

0,3m³/s

Mean precip.

710mm/an

Mean T°

16,9°C

Moisture idx

-0,34

Max snow

1%

Mean runoff

167mm/an

Mean elev. (basins)

390m

Watersheds crossing here

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

Human pressure

Pop. density

28hab/km²

Night light

32,4nW

Built-up

969,6%

Pesticides

19,3kg/km²

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

Protected areas2

IUCN Not Applicable · 1IUCN II · 1

Chréa

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 2002

412 km²

Chréa

IUCN II

National Park · 1983

277 km²

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