Ontologia

Governorate · tun

Bizerte

Tunisia

CsaTemperate, dry summer, hot summer(100 %)

Species observed

1 282

Observations

13 874

Area

3 385,2km²

Ecological tissue

Sample of 29 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 Bizerte : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 54 interactions GloBI sur 3 types (connectance 13.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
54
Connectance
0.133
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

1 282 distinct species · 13 874 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

13 874 obs · 81 cellules
Obs. / cellule
≥ 3 894
253–3 893
72–252
32–71
< 32

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

Climate

Mean T°

18,3°C

Annual rain

710mm

Warmest m°

31,5°C

Coldest m°

7,7°C

Elevation: 144 m on average (min -22 m, max 486 m)

Bioclimatic detailsExpert
Annual mean temp.
18,3°C
Annual rain
710mm
Warmest month
31,5°C
Coldest month
7,7°C
Mean alt.
144m
Min
-22m
Max
486m
Std. dev.
120m
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

7,1

Org. C

27,0g/kg

Clay

38,5%

Sand

29,2%

Silt

32,4%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,0
Org. C
42,0g/kg
Clay
37,9%
Sand
29,3%
Silt
32,7%
5–15 cm
pH H₂O
7,1
Org. C
21,0g/kg
Clay
38,6%
Sand
28,5%
Silt
32,9%
15–30 cm
pH H₂O
7,1
Org. C
17,9g/kg
Clay
38,9%
Sand
29,6%
Silt
31,5%

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

Land cover

Forest11.2%
Crops34.2%
Built-up0.9%
Bare soil4.6%
Other (grassland, water…)49.1%

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

Hydrology6 basins · 7 lakes · 9 rivers

Hydrology metrics for this exact territory

Stream length here

159,1km

Lake surface here

99,92km²

Basins crossed

6

Max stream order

4

Max drainage

23 172km²

Discharge in basins

24,4m³/s

Mean precip.

620mm/an

Mean T°

17,4°C

Moisture idx

-0,48

Max snow

2%

Mean runoff

185mm/an

Mean elev. (basins)

155m

Watersheds crossing here

Lakes (7, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

1,2nW

Built-up

92,7%

Pesticides

3,0kg/km²

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

Protected areas14

IUCN Not Reported · 9IUCN Not Assigned · 2IUCN Not Applicable · 2IUCN VI · 1🌊 Marine · 4

Ichkeul

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 1980

126 km²

Ichkeul

IUCN Not Reported

National Park · 1980

126 km²

Ichkeul

IUCN Not Reported

Wetland Zone of National Importance · 1980

126 km²

Ichkeul

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 1980

126 km²

Complete list

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

Sub-administrations14