Ontologia

Region · mrt

Trarza

Mauritania

BWhArid, desert, hot(100 %)

Species observed

980

Observations

29 359

Area

68 794,1km²

Ecological tissue

Sample of 39 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 Trarza : 32 espèces reliées par 39 interactions GloBI sur 3 types (connectance 5.0%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
39
Connectance
0.050
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

980 distinct species · 29 359 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

29 359 obs · 37 cellules
Obs. / cellule
≥ 10 758
2 051–10 757
82–2 050
57–81
< 57

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

28,2°C

Annual rain

112mm

Warmest m°

39,5°C

Coldest m°

15,3°C

Elevation: 36 m on average (min -185 m, max 136 m)

Bioclimatic detailsExpert
Annual mean temp.
28,2°C
Annual rain
112mm
Warmest month
39,5°C
Coldest month
15,3°C
Mean alt.
36m
Min
-185m
Max
136m
Std. dev.
25m
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

7,8

Org. C

5,1g/kg

Clay

21,1%

Sand

61,0%

Silt

17,8%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,8
Org. C
5,7g/kg
Clay
20,7%
Sand
61,2%
Silt
18,1%
5–15 cm
pH H₂O
7,8
Org. C
4,6g/kg
Clay
21,0%
Sand
61,2%
Silt
17,9%
15–30 cm
pH H₂O
7,8
Org. C
5,1g/kg
Clay
21,7%
Sand
60,8%
Silt
17,6%

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

Land cover

Forest0.7%
Crops1.1%
Built-up0.0%
Bare soil74.1%
Other (grassland, water…)24.1%

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

Hydrology114 basins · 50 lakes · 10 rivers

Hydrology metrics for this exact territory

Stream length here

356,4km

Lake surface here

181,92km²

Basins crossed

114

Max stream order

7

Max drainage

440 912km²

Discharge in basins

834,8m³/s

Mean precip.

134mm/an

Mean T°

27,9°C

Moisture idx

-0,93

Mean runoff

7mm/an

Mean elev. (basins)

40m

Watersheds crossing here

105 more basins

Lakes (50, top by area)

41 more lakes

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

3,3%

Pesticides

0,1kg/km²

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

Protected areas4

IUCN II · 3IUCN Not Reported · 1🌊 Marine · 1📍 Point sites · 1

Diawling

IUCN II

National Park · 1990

160 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

Sub-administrations6