Ontologia

Delegation · TUN

Alaa

Tunisia

BShArid, steppe, hot(57 %)

Species observed

107

Observations

2 362

Area

811,7km²

Ecological tissue

Sample of 38 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 Alaa : 33 espèces reliées par 48 interactions GloBI sur 5 types (connectance 6.8%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
48
Connectance
0.068
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

107 distinct species · 2 362 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 362 obs · 18 cellules
Obs. / cellule
≥ 2 101
111–2 100
12–110
3–11
< 3

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

Climate

Mean T°

17,9°C

Annual rain

381mm

Warmest m°

34,7°C

Coldest m°

4,1°C

Elevation: 449 m on average (min 89 m, max 875 m)

Bioclimatic detailsExpert
Annual mean temp.
17,9°C
Annual rain
381mm
Warmest month
34,7°C
Coldest month
4,1°C
Mean alt.
449m
Min
89m
Max
875m
Std. dev.
161m
Köppen-Geiger (dominant)
BShArid, steppe, hot(57 %)Arid

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

16,3g/kg

Clay

26,7%

Sand

43,1%

Silt

30,1%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,6
Org. C
22,8g/kg
Clay
25,1%
Sand
44,2%
Silt
30,7%
5–15 cm
pH H₂O
7,8
Org. C
14,1g/kg
Clay
26,4%
Sand
43,2%
Silt
30,4%
15–30 cm
pH H₂O
7,8
Org. C
12,1g/kg
Clay
28,7%
Sand
42,0%
Silt
29,2%

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

Land cover

Forest8.9%
Crops18.4%
Built-up0.7%
Bare soil12.8%
Other (grassland, water…)59.2%

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

Hydrology5 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

6,3km

Basins crossed

5

Max stream order

1

Max drainage

2 485km²

Discharge in basins

0,7m³/s

Mean precip.

344mm/an

Mean T°

17,1°C

Moisture idx

-0,75

Mean runoff

32mm/an

Mean elev. (basins)

412m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,3nW

Built-up

69,8%

Pesticides

1,1kg/km²

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

Protected areas3

IUCN Not Reported · 2IUCN Not Assigned · 1📍 Point sites · 1

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