Ontologia

Commune · DZA

Drean

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

11

Observations

20

Area

48,5km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Sample of 3 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 Drean : 3 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, filtre Serrano α=0.2).

Espèces affichées
3
Interactions affichées
2
Connectance
0.667
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

11 distinct species · 20 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

20 obs · 2 cellules
Obs. / cellule
≥ 12
12–11
12–11
12–11
< 12

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

Climate

Mean T°

19,1°C

Annual rain

642mm

Warmest m°

35,0°C

Coldest m°

6,0°C

Elevation: 39 m on average (min 14 m, max 115 m)

Bioclimatic detailsExpert
Annual mean temp.
19,1°C
Annual rain
642mm
Warmest month
35,0°C
Coldest month
6,0°C
Mean alt.
39m
Min
14m
Max
115m
Std. dev.
26m
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

6,9

Org. C

20,6g/kg

Clay

35,5%

Sand

30,3%

Silt

34,2%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,8
Org. C
32,4g/kg
Clay
34,8%
Sand
30,8%
Silt
34,4%
5–15 cm
pH H₂O
6,9
Org. C
17,7g/kg
Clay
36,5%
Sand
29,4%
Silt
34,1%
15–30 cm
pH H₂O
6,8
Org. C
11,8g/kg
Clay
35,2%
Sand
30,8%
Silt
33,9%

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

Land cover

Forest7.6%
Crops44.8%
Built-up2.6%
Bare soil3.5%
Other (grassland, water…)41.5%

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

Hydrology1 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

18,6km

Basins crossed

1

Max stream order

5

Max drainage

6 333km²

Discharge in basins

0,9m³/s

Mean precip.

678mm/an

Mean T°

17,5°C

Moisture idx

-0,45

Max snow

1%

Mean runoff

193mm/an

Mean elev. (basins)

171m

Watersheds crossing here

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

Human pressure

Pop. density

7hab/km²

Night light

5,8nW

Built-up

257,9%

Pesticides

15,7kg/km²

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