Ontologia

Delegation · TUN

Chrarda

Tunisia

BWhArid, desert, hot(65 %)

Species observed

10

Observations

16

Area

396,3km²

Partial data for this territory

Few observations recorded here. Real biodiversity is likely richer.

Ecological tissue

Sample of 3 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 Chrarda : 3 espèces reliées par 2 interactions GloBI sur 1 type (connectance 66.7%, filtre Serrano α=0.2).

Espèces affichées
3
Interactions affichées
2
Connectance
0.667
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

10 distinct species · 16 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

16 obs · 4 cellules
Obs. / cellule
≥ 9
9–8
4–8
4–3
< 4

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

Climate

Mean T°

19,9°C

Annual rain

276mm

Warmest m°

36,4°C

Coldest m°

6,3°C

Elevation: 126 m on average (min 85 m, max 202 m)

Bioclimatic detailsExpert
Annual mean temp.
19,9°C
Annual rain
276mm
Warmest month
36,4°C
Coldest month
6,3°C
Mean alt.
126m
Min
85m
Max
202m
Std. dev.
27m
Köppen-Geiger (dominant)
BWhArid, desert, hot(65 %)Arid

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

Soil & lithology

pH H₂O

8,0

Org. C

11,8g/kg

Clay

29,4%

Sand

42,4%

Silt

28,2%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,9
Org. C
15,8g/kg
Clay
28,5%
Sand
43,2%
Silt
28,4%
5–15 cm
pH H₂O
8,0
Org. C
10,8g/kg
Clay
29,4%
Sand
42,1%
Silt
28,5%
15–30 cm
pH H₂O
8,1
Org. C
8,8g/kg
Clay
30,4%
Sand
41,9%
Silt
27,7%

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

Land cover

Forest11.3%
Crops15.0%
Built-up1.0%
Bare soil22.1%
Other (grassland, water…)50.6%

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

Hydrology2 basins · 1 lakes · 0 rivers

Hydrology metrics for this exact territory

Lake surface here

2,49km²

Basins crossed

2

Max drainage

3 832km²

Discharge in basins

0,5m³/s

Mean precip.

263mm/an

Mean T°

18,6°C

Moisture idx

-0,80

Mean runoff

33mm/an

Mean elev. (basins)

105m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

0,4nW

Built-up

96,2%

Pesticides

0,0kg/km²

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