Ontologia

Commune · DZA

Douera

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

247

Observations

808

Area

57,9km²

Ecological tissue

Sample of 22 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 Douera : 19 espèces reliées par 18 interactions GloBI sur 2 types (connectance 7.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
18
Connectance
0.078
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

247 distinct species · 808 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

808 obs · 1 cellules
Obs. / cellule
≥ 808
808–807
808–807
808–807
< 808

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

Climate

Mean T°

18,0°C

Annual rain

727mm

Warmest m°

30,2°C

Coldest m°

8,1°C

Elevation: 136 m on average (min 24 m, max 192 m)

Bioclimatic detailsExpert
Annual mean temp.
18,0°C
Annual rain
727mm
Warmest month
30,2°C
Coldest month
8,1°C
Mean alt.
136m
Min
24m
Max
192m
Std. dev.
43m
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

23,4g/kg

Clay

33,8%

Sand

34,5%

Silt

31,6%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
34,8g/kg
Clay
33,5%
Sand
34,6%
Silt
31,8%
5–15 cm
pH H₂O
6,7
Org. C
19,5g/kg
Clay
34,2%
Sand
34,3%
Silt
31,5%
15–30 cm
pH H₂O
6,7
Org. C
15,9g/kg
Clay
33,9%
Sand
34,7%
Silt
31,5%

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

Land cover

Forest6.0%
Crops22.8%
Built-up8.2%
Bare soil4.8%
Other (grassland, water…)58.3%

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

Hydrology3 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

2,9km

Basins crossed

3

Max stream order

1

Max drainage

2 039km²

Discharge in basins

0,4m³/s

Mean precip.

712mm/an

Mean T°

16,7°C

Moisture idx

-0,34

Max snow

2%

Mean runoff

174mm/an

Mean elev. (basins)

379m

Watersheds crossing here

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

Human pressure

Pop. density

12hab/km²

Night light

32,1nW

Built-up

815,6%

Pesticides

20,6kg/km²

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