Ontologia

Commune · DZA

El Hamdania

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

88

Observations

162

Area

142,9km²

Ecological tissue

Sample of 32 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 El Hamdania : 25 espèces reliées par 46 interactions GloBI sur 5 types (connectance 9.3%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
46
Connectance
0.093
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

88 distinct species · 162 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

162 obs · 5 cellules
Obs. / cellule
≥ 106
106–105
27–105
15–26
< 15

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

Climate

Mean T°

14,5°C

Annual rain

753mm

Warmest m°

31,0°C

Coldest m°

1,6°C

Elevation: 888 m on average (min 482 m, max 1 327 m)

Bioclimatic detailsExpert
Annual mean temp.
14,5°C
Annual rain
753mm
Warmest month
31,0°C
Coldest month
1,6°C
Mean alt.
888m
Min
482m
Max
1 327m
Std. dev.
203m
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

6,4

Org. C

37,6g/kg

Clay

29,7%

Sand

33,9%

Silt

36,4%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,4
Org. C
62,5g/kg
Clay
29,9%
Sand
33,9%
Silt
36,2%
5–15 cm
pH H₂O
6,4
Org. C
28,6g/kg
Clay
29,6%
Sand
33,6%
Silt
36,8%
15–30 cm
pH H₂O
6,4
Org. C
21,5g/kg
Clay
29,7%
Sand
34,1%
Silt
36,2%

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

Land cover

Forest26.9%
Crops5.0%
Built-up0.1%
Bare soil1.9%
Other (grassland, water…)66.1%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

8,1km

Basins crossed

2

Max stream order

3

Max drainage

2 039km²

Discharge in basins

0,8m³/s

Mean precip.

712mm/an

Mean T°

16,7°C

Moisture idx

-0,34

Max snow

2%

Mean runoff

170mm/an

Mean elev. (basins)

405m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,3nW

Built-up

7,9%

Pesticides

19,6kg/km²

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

Protected areas2

IUCN Not Applicable · 1IUCN II · 1

Chréa

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 2002

412 km²

Chréa

IUCN II

National Park · 1983

277 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN