Ontologia

Region · mrt

Brakna

Mauritania

BWhArid, desert, hot(100 %)

Species observed

378

Observations

5 961

Area

33 214,2km²

Ecological tissue

Sample of 26 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 Brakna : 23 espèces + 3 bulles famille, 23 interactions GloBI documentées sur 2 types (connectance 7.1%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
26
Interactions affichées
23
Connectance
0.071
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

378 distinct species · 5 961 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 961 obs · 284 cellules
Obs. / cellule
≥ 362
28–361
7–27
2–6
< 2

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

Climate

Mean T°

30,2°C

Annual rain

187mm

Warmest m°

40,9°C

Coldest m°

16,2°C

Elevation: 69 m on average (min 3 m, max 223 m)

Bioclimatic detailsExpert
Annual mean temp.
30,2°C
Annual rain
187mm
Warmest month
40,9°C
Coldest month
16,2°C
Mean alt.
69m
Min
3m
Max
223m
Std. dev.
30m
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

7,5

Org. C

3,9g/kg

Clay

24,0%

Sand

58,2%

Silt

17,8%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Org. C
4,9g/kg
Clay
23,7%
Sand
58,1%
Silt
18,2%
5–15 cm
pH H₂O
7,5
Org. C
3,7g/kg
Clay
23,6%
Sand
58,5%
Silt
17,8%
15–30 cm
pH H₂O
7,5
Org. C
3,1g/kg
Clay
24,8%
Sand
58,0%
Silt
17,2%

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

Land cover

Forest0.8%
Crops1.1%
Built-up0.1%
Bare soil57.3%
Other (grassland, water…)40.7%

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

Hydrology66 basins · 6 lakes · 37 rivers

Hydrology metrics for this exact territory

Stream length here

859,1km

Lake surface here

6,59km²

Basins crossed

66

Max stream order

7

Max drainage

379 223km²

Discharge in basins

1 066,1m³/s

Mean precip.

183mm/an

Mean T°

29,3°C

Moisture idx

-0,91

Mean runoff

50mm/an

Mean elev. (basins)

72m

Watersheds crossing here

57 more basins

Lakes (6, top by area)

Rivers / streams (37, ord ≥ 4)

25 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

5,3%

Pesticides

0,1kg/km²

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

Sub-administrations5