Ontologia

Commune · DZA

Mahelma

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

20

Observations

500

Area

33,8km²

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 Mahelma : 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

20 distinct species · 500 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

500 obs · 1 cellules
Obs. / cellule
≥ 500
500–499
500–499
500–499
< 500

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

Climate

Mean T°

18,1°C

Annual rain

679mm

Warmest m°

29,0°C

Coldest m°

9,1°C

Elevation: 102 m on average (min 28 m, max 179 m)

Bioclimatic detailsExpert
Annual mean temp.
18,1°C
Annual rain
679mm
Warmest month
29,0°C
Coldest month
9,1°C
Mean alt.
102m
Min
28m
Max
179m
Std. dev.
47m
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

6,6

Org. C

26,8g/kg

Clay

33,5%

Sand

34,0%

Silt

32,5%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,6
Org. C
39,3g/kg
Clay
34,0%
Sand
33,7%
Silt
32,3%
5–15 cm
pH H₂O
6,6
Org. C
22,6g/kg
Clay
34,0%
Sand
33,2%
Silt
32,7%
15–30 cm
pH H₂O
6,6
Org. C
18,4g/kg
Clay
32,6%
Sand
35,0%
Silt
32,4%

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

Land cover

Forest10.4%
Crops23.6%
Built-up3.7%
Bare soil5.6%
Other (grassland, water…)56.7%

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

Hydrology2 basins · 1 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

0,9km

Lake surface here

0,00km²

Basins crossed

2

Max stream order

5

Max drainage

2 039km²

Discharge in basins

0,2m³/s

Mean precip.

710mm/an

Mean T°

17,0°C

Moisture idx

-0,33

Max snow

1%

Mean runoff

177mm/an

Mean elev. (basins)

323m

Watersheds crossing here

Lakes (1, top by area)

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

6hab/km²

Night light

23,6nW

Built-up

365,8%

Pesticides

20,8kg/km²

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