Ontologia

District · SDN

Merawi

Sudan

BWhArid, desert, hot(100 %)

Species observed

263

Observations

1 396

Area

24 191,4km²

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 Merawi : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 2 types (connectance 12.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
31
Connectance
0.122
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

263 distinct species · 1 396 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 396 obs · 128 cellules
Obs. / cellule
≥ 149
5–148
2–4
1–1
< 1

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

Climate

Mean T°

28,8°C

Annual rain

17mm

Warmest m°

40,7°C

Coldest m°

11,7°C

Elevation: 343 m on average (min 243 m, max 643 m)

Bioclimatic detailsExpert
Annual mean temp.
28,8°C
Annual rain
17mm
Warmest month
40,7°C
Coldest month
11,7°C
Mean alt.
343m
Min
243m
Max
643m
Std. dev.
58m
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

8,0

Org. C

3,2g/kg

Clay

20,5%

Sand

61,2%

Silt

18,3%

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

Dominant lithology: vbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
8,0
Org. C
3,9g/kg
Clay
20,8%
Sand
61,1%
Silt
18,1%
5–15 cm
pH H₂O
8,0
Org. C
3,3g/kg
Clay
20,4%
Sand
61,3%
Silt
18,3%
15–30 cm
pH H₂O
8,0
Org. C
2,4g/kg
Clay
20,4%
Sand
61,1%
Silt
18,5%

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

Land cover

Forest0.2%
Crops0.8%
Built-up0.1%
Bare soil95.1%
Other (grassland, water…)3.8%

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

Hydrology63 basins · 0 lakes · 6 rivers

Hydrology metrics for this exact territory

Stream length here

871,9km

Basins crossed

63

Max stream order

8

Max drainage

2 510 630km²

Discharge in basins

43 838,0m³/s

Mean precip.

32mm/an

Mean T°

28,9°C

Moisture idx

-0,99

Mean runoff

4mm/an

Mean elev. (basins)

352m

Watersheds crossing here

54 more basins

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

6,3%

Pesticides

0,0kg/km²

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

Sub-administrations2