Ontologia

Commune · DZA

Freha

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

51

Observations

128

Area

69,2km²

Ecological tissue

Sample of 16 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 Freha : 15 espèces reliées par 17 interactions GloBI sur 2 types (connectance 14.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
16
Interactions affichées
17
Connectance
0.142
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

51 distinct species · 128 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

128 obs · 2 cellules
Obs. / cellule
≥ 114
114–113
114–113
114–113
< 114

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

Climate

Mean T°

17,6°C

Annual rain

852mm

Warmest m°

31,0°C

Coldest m°

6,4°C

Elevation: 217 m on average (min 96 m, max 700 m)

Bioclimatic detailsExpert
Annual mean temp.
17,6°C
Annual rain
852mm
Warmest month
31,0°C
Coldest month
6,4°C
Mean alt.
217m
Min
96m
Max
700m
Std. dev.
105m
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

30,8g/kg

Clay

34,2%

Sand

31,2%

Silt

34,7%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
46,7g/kg
Clay
34,5%
Sand
31,5%
Silt
34,0%
5–15 cm
pH H₂O
6,7
Org. C
26,2g/kg
Clay
34,5%
Sand
30,5%
Silt
35,1%
15–30 cm
pH H₂O
6,7
Org. C
19,6g/kg
Clay
33,4%
Sand
31,6%
Silt
35,0%

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

Land cover

Forest9.5%
Crops28.7%
Built-up3.1%
Bare soil3.7%
Other (grassland, water…)55.0%

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

Hydrology1 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

12,2km

Basins crossed

1

Max stream order

3

Max drainage

2 505km²

Discharge in basins

0,8m³/s

Mean precip.

913mm/an

Mean T°

16,4°C

Moisture idx

-0,19

Max snow

3%

Mean runoff

258mm/an

Mean elev. (basins)

520m

Watersheds crossing here

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

Human pressure

Pop. density

3hab/km²

Night light

3,5nW

Built-up

307,1%

Pesticides

18,8kg/km²

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