Ontologia

Commune · DZA

Hennaya

Algeria

CsaTemperate, dry summer, hot summer(100 %)

Species observed

57

Observations

82

Area

99,2km²

Ecological tissue

Sample of 26 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 Hennaya : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 5 types (connectance 10.2%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
26
Interactions affichées
33
Connectance
0.102
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

57 distinct species · 82 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

82 obs · 3 cellules
Obs. / cellule
≥ 43
43–42
43–42
26–42
< 26

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

Climate

Mean T°

17,8°C

Annual rain

402mm

Warmest m°

32,3°C

Coldest m°

4,8°C

Elevation: 373 m on average (min 246 m, max 636 m)

Bioclimatic detailsExpert
Annual mean temp.
17,8°C
Annual rain
402mm
Warmest month
32,3°C
Coldest month
4,8°C
Mean alt.
373m
Min
246m
Max
636m
Std. dev.
82m
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

7,8

Org. C

15,6g/kg

Clay

30,1%

Sand

41,6%

Silt

28,3%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,6
Org. C
22,5g/kg
Clay
28,6%
Sand
42,0%
Silt
29,3%
5–15 cm
pH H₂O
7,8
Org. C
12,4g/kg
Clay
30,4%
Sand
41,3%
Silt
28,2%
15–30 cm
pH H₂O
7,8
Org. C
11,8g/kg
Clay
31,2%
Sand
41,4%
Silt
27,4%

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

Land cover

Forest4.2%
Crops54.9%
Built-up1.2%
Bare soil2.3%
Other (grassland, water…)37.3%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

6,5km

Basins crossed

2

Max stream order

3

Max drainage

4 957km²

Discharge in basins

0,3m³/s

Mean precip.

469mm/an

Mean T°

16,5°C

Moisture idx

-0,61

Mean runoff

27mm/an

Mean elev. (basins)

529m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

3hab/km²

Night light

4,1nW

Built-up

121,4%

Pesticides

20,7kg/km²

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