Ontologia

Commune · SDN

Alalafon

Sudan

BWhArid, desert, hot(100 %)

Species observed

70

Observations

207

Area

744,1km²

Ecological tissue

Sample of 23 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 Alalafon : 21 espèces reliées par 20 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
20
Connectance
0.079
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

70 distinct species · 207 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

207 obs · 8 cellules
Obs. / cellule
≥ 152
152–151
5–151
2–4
< 2

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

Climate

Mean T°

29,8°C

Annual rain

131mm

Warmest m°

40,5°C

Coldest m°

15,7°C

Elevation: 394 m on average (min 381 m, max 433 m)

Bioclimatic detailsExpert
Annual mean temp.
29,8°C
Annual rain
131mm
Warmest month
40,5°C
Coldest month
15,7°C
Mean alt.
394m
Min
381m
Max
433m
Std. dev.
8m
Köppen-Geiger (dominant)
BWhArid, desert, hot(100 %)Arid

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

Soil & lithology

pH H₂O

8,6

Org. C

4,3g/kg

Clay

28,9%

Sand

46,0%

Silt

25,1%

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

Dominant lithology: suGLiMaggregated to Sharg En Nile

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,5
Org. C
5,2g/kg
Clay
26,1%
Sand
49,1%
Silt
24,9%
5–15 cm
pH H₂O
8,6
Org. C
4,0g/kg
Clay
28,0%
Sand
46,7%
Silt
25,4%
15–30 cm
pH H₂O
8,6
Org. C
3,7g/kg
Clay
32,5%
Sand
42,4%
Silt
25,1%

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

Land cover

Forest3.9%
Crops10.0%
Built-up2.0%
Bare soil42.2%
Other (grassland, water…)41.9%

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

Hydrology5 basins · 0 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

94,4km

Basins crossed

5

Max stream order

7

Max drainage

308 195km²

Discharge in basins

1 004,5m³/s

Mean precip.

169mm/an

Mean T°

28,9°C

Moisture idx

-0,92

Mean runoff

12mm/an

Mean elev. (basins)

405m

Watersheds crossing here

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

Human pressure

Pop. density

3hab/km²

Night light

1,1nW

Built-up

203,1%

Pesticides

0,2kg/km²

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