Ontologia

Delegation · TUN

La Marsa

Tunisia

CsaTemperate, dry summer, hot summer(100 %)

Species observed

271

Observations

759

Area

32,4km²

Ecological tissue

Sample of 42 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 La Marsa : 36 espèces reliées par 66 interactions GloBI sur 5 types (connectance 7.7%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
66
Connectance
0.077
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

271 distinct species · 759 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

759 obs · 1 cellules
Obs. / cellule
≥ 759
759–758
759–758
759–758
< 759

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

Climate

Mean T°

18,5°C

Annual rain

548mm

Warmest m°

28,8°C

Coldest m°

10,1°C

Elevation: 12 m on average (min -6 m, max 48 m)

Bioclimatic detailsExpert
Annual mean temp.
18,5°C
Annual rain
548mm
Warmest month
28,8°C
Coldest month
10,1°C
Mean alt.
12m
Min
-6m
Max
48m
Std. dev.
14m
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

7,6

Clay

37,1%

Sand

23,0%

Silt

39,9%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Clay
37,2%
Sand
22,8%
Silt
40,0%
5–15 cm
pH H₂O
7,6
Clay
37,2%
Sand
23,1%
Silt
39,6%
15–30 cm
pH H₂O
7,6
Clay
36,8%
Sand
23,2%
Silt
40,0%

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

Land cover

Forest3.7%
Crops7.5%
Built-up14.4%
Bare soil3.8%
Other (grassland, water…)70.7%

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

Hydrology1 basins · 1 lakes · 0 rivers

Hydrology metrics for this exact territory

Lake surface here

2,45km²

Basins crossed

1

Max drainage

495km²

Discharge in basins

0,0m³/s

Mean precip.

448mm/an

Mean T°

18,0°C

Moisture idx

-0,63

Mean runoff

115mm/an

Mean elev. (basins)

16m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

23hab/km²

Night light

37,2nW

Built-up

1 438,5%

Pesticides

2,7kg/km²

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