Ontologia

Chef-Lieu-Wilaya · DZA

Annaba

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

229

Observations

415

Area

48,7km²

Ecological tissue

Sample of 35 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 Annaba : 26 espèces reliées par 61 interactions GloBI sur 5 types (connectance 7.4%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
61
Connectance
0.074
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

229 distinct species · 415 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

415 obs · 1 cellules
Obs. / cellule
≥ 415
415–414
415–414
415–414
< 415

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

Climate

Mean T°

18,8°C

Annual rain

739mm

Warmest m°

32,3°C

Coldest m°

7,4°C

Elevation: 89 m on average (min -31 m, max 541 m)

Bioclimatic detailsExpert
Annual mean temp.
18,8°C
Annual rain
739mm
Warmest month
32,3°C
Coldest month
7,4°C
Mean alt.
89m
Min
-31m
Max
541m
Std. dev.
103m
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

6,0

Org. C

44,1g/kg

Clay

33,3%

Sand

33,9%

Silt

32,8%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,0
Org. C
70,5g/kg
Clay
32,8%
Sand
34,0%
Silt
33,2%
5–15 cm
pH H₂O
5,9
Org. C
36,4g/kg
Clay
32,8%
Sand
33,2%
Silt
34,1%
15–30 cm
pH H₂O
6,0
Org. C
25,4g/kg
Clay
34,4%
Sand
34,4%
Silt
31,2%

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

Land cover

Forest10.2%
Crops6.5%
Built-up11.0%
Bare soil1.7%
Other (grassland, water…)70.5%

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

Hydrology1 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

1

Max drainage

360km²

Discharge in basins

0,4m³/s

Mean precip.

800mm/an

Mean T°

17,5°C

Moisture idx

-0,29

Max snow

2%

Mean runoff

257mm/an

Mean elev. (basins)

196m

Watersheds crossing here

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

Human pressure

Pop. density

36hab/km²

Night light

37,4nW

Built-up

1 104,0%

Pesticides

19,2kg/km²

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