Ontologia

Commune · DZA

Haizer

Algeria

CsaTemperate, dry summer, hot summer(93 %)

Species observed

278

Observations

600

Area

88,8km²

Ecological tissue

Sample of 40 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 Haizer : 28 espèces reliées par 67 interactions GloBI sur 5 types (connectance 8.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
67
Connectance
0.086
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

278 distinct species · 600 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

600 obs · 2 cellules
Obs. / cellule
≥ 480
480–479
480–479
480–479
< 480

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

Climate

Mean T°

14,7°C

Annual rain

845mm

Warmest m°

32,6°C

Coldest m°

0,4°C

Elevation: 844 m on average (min 504 m, max 1 856 m)

Bioclimatic detailsExpert
Annual mean temp.
14,7°C
Annual rain
845mm
Warmest month
32,6°C
Coldest month
0,4°C
Mean alt.
844m
Min
504m
Max
1 856m
Std. dev.
369m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(93 %)Temperate

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

Soil & lithology

pH H₂O

6,5

Org. C

36,6g/kg

Clay

32,7%

Sand

32,4%

Silt

34,9%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,5
Org. C
57,4g/kg
Clay
32,9%
Sand
32,3%
Silt
34,8%
5–15 cm
pH H₂O
6,6
Org. C
29,8g/kg
Clay
33,1%
Sand
32,0%
Silt
35,0%
15–30 cm
pH H₂O
6,5
Org. C
22,8g/kg
Clay
32,2%
Sand
33,0%
Silt
34,9%

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

Land cover

Forest20.0%
Crops15.9%
Built-up1.4%
Bare soil2.9%
Other (grassland, water…)59.8%

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

Hydrology2 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

16,0km

Basins crossed

2

Max stream order

3

Max drainage

2 505km²

Discharge in basins

0,9m³/s

Mean precip.

737mm/an

Mean T°

15,5°C

Moisture idx

-0,36

Max snow

3%

Mean runoff

173mm/an

Mean elev. (basins)

745m

Watersheds crossing here

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

Human pressure

Pop. density

2hab/km²

Night light

1,8nW

Built-up

136,0%

Pesticides

17,7kg/km²

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

Protected areas2

IUCN Not Applicable · 1IUCN II · 1

Djurdjura

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1997

380 km²

Djurdjura

IUCN II

National Park · 1983

202 km²

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