Ontologia

Commune · DZA

Ras El Oued

Algeria

BSkArid, steppe, cold(83 %)

Species observed

50

Observations

60

Area

140,5km²

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 Ras El Oued : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 5 types (connectance 8.7%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
22
Interactions affichées
20
Connectance
0.087
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

50 distinct species · 60 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

60 obs · 4 cellules
Obs. / cellule
≥ 34
34–33
19–33
19–18
< 19

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

Climate

Mean T°

13,9°C

Annual rain

419mm

Warmest m°

31,7°C

Coldest m°

-0,1°C

Elevation: 1 192 m on average (min 980 m, max 1 598 m)

Bioclimatic detailsExpert
Annual mean temp.
13,9°C
Annual rain
419mm
Warmest month
31,7°C
Coldest month
-0,1°C
Mean alt.
1 192m
Min
980m
Max
1 598m
Std. dev.
174m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(83 %)Arid

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

7,5

Org. C

17,4g/kg

Clay

25,3%

Sand

41,1%

Silt

33,6%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
26,7g/kg
Clay
24,5%
Sand
41,3%
Silt
34,3%
5–15 cm
pH H₂O
7,6
Org. C
13,7g/kg
Clay
24,5%
Sand
41,4%
Silt
34,2%
15–30 cm
pH H₂O
7,6
Org. C
11,9g/kg
Clay
27,0%
Sand
40,6%
Silt
32,4%

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

Land cover

Forest4.1%
Crops44.7%
Built-up1.4%
Bare soil7.2%
Other (grassland, water…)42.5%

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

Hydrology4 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

1,0km

Basins crossed

4

Max stream order

1

Max drainage

25 882km²

Discharge in basins

0,4m³/s

Mean precip.

436mm/an

Mean T°

13,3°C

Moisture idx

-0,62

Max snow

1%

Mean runoff

89mm/an

Mean elev. (basins)

1 076m

Watersheds crossing here

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

Human pressure

Pop. density

3hab/km²

Night light

4,7nW

Built-up

141,5%

Pesticides

13,6kg/km²

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