Ontologia

Governorate · tun

Siliana

Tunisia

CsaTemperate, dry summer, hot summer(53 %)

Species observed

487

Observations

3 916

Area

4 696,4km²

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 Siliana : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 50 interactions GloBI sur 5 types (connectance 11.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
50
Connectance
0.115
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

487 distinct species · 3 916 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 916 obs · 87 cellules
Obs. / cellule
≥ 1 509
50–1 508
20–49
10–19
< 10

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

Climate

Mean T°

16,8°C

Annual rain

481mm

Warmest m°

33,5°C

Coldest m°

3,5°C

Elevation: 581 m on average (min 152 m, max 1 191 m)

Bioclimatic detailsExpert
Annual mean temp.
16,8°C
Annual rain
481mm
Warmest month
33,5°C
Coldest month
3,5°C
Mean alt.
581m
Min
152m
Max
1 191m
Std. dev.
218m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(53 %)Temperate

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

Soil & lithology

pH H₂O

7,6

Org. C

18,5g/kg

Clay

29,3%

Sand

37,3%

Silt

33,4%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Org. C
28,6g/kg
Clay
28,2%
Sand
37,9%
Silt
33,9%
5–15 cm
pH H₂O
7,7
Org. C
15,1g/kg
Clay
28,6%
Sand
37,3%
Silt
34,1%
15–30 cm
pH H₂O
7,7
Org. C
11,9g/kg
Clay
31,0%
Sand
36,8%
Silt
32,1%

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

Land cover

Forest6.9%
Crops37.6%
Built-up0.4%
Bare soil7.7%
Other (grassland, water…)47.5%

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

Hydrology15 basins · 6 lakes · 12 rivers

Hydrology metrics for this exact territory

Stream length here

431,1km

Lake surface here

6,06km²

Basins crossed

15

Max stream order

4

Max drainage

23 172km²

Discharge in basins

15,3m³/s

Mean precip.

465mm/an

Mean T°

16,5°C

Moisture idx

-0,66

Max snow

1%

Mean runoff

73mm/an

Mean elev. (basins)

524m

Watersheds crossing here

6 more basins

Lakes (6, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,4nW

Built-up

36,0%

Pesticides

2,5kg/km²

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

Protected areas4

IUCN Not Reported · 2IUCN Not Assigned · 2

Ain Dahab

IUCN Not Reported

Wetland Zone of National Importance · 2007

70 km²

Ain Dahab

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 2007

70 km²

Kef Erraai

IUCN Not Assigned

Nature Reserve · 2010

17 km²

Dj. Serj

IUCN Not Assigned

National Park · 2010

17 km²

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

Sub-administrations11