Department · MRT
Méderdra
Mauritania
Species observed
244
Observations
1 357
Area
8 071,6km²
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).
Indicateurs du tissu écologique
Tissu écologique de Méderdra : 34 espèces reliées par 41 interactions GloBI sur 3 types (connectance 5.5%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
244 distinct species · 1 357 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
27,4°C
Annual rain
156mm
Warmest m°
37,8°C
Coldest m°
16,0°C
Elevation: 30 m on average (min -185 m, max 54 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
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
4,5g/kg
Clay
17,2%
Sand
68,9%
Silt
13,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology21 basins · 2 lakes · 0 rivers
Hydrology metrics for this exact territory
Lake surface here
1,52km²
Basins crossed
21
Max drainage
8 752km²
Discharge in basins
9,5m³/s
Mean precip.
157mm/an
Mean T°
26,9°C
Moisture idx
-0,92
Mean runoff
5mm/an
Mean elev. (basins)
30m
Watersheds crossing here
- Basin #27530sub-area1 730,9 km²overlap1201.51 km²15%
- Basin #27570sub-area1 607,2 km²overlap1014.73 km²13%
- Basin #51710sub-area851,3 km²overlap841.89 km²10%
- Basin #67970sub-area881,9 km²overlap716.39 km²9%
- Basin #68190sub-area933,1 km²overlap656.40 km²8%
- Basin #66500sub-area1 385,3 km²overlap600.32 km²7%
- Basin #27490sub-area623,4 km²overlap589.60 km²7%
- Basin #53170sub-area537 km²overlap452.65 km²6%
- Basin #56320sub-area419,5 km²overlap364.24 km²5%
12 more basinssorted by overlap
- Basin #09040sub-area2 474,2 km²overlap303.17 km²4%
- Basin #67830sub-area332,5 km²overlap263.88 km²3%
- Basin #51910sub-area328,5 km²overlap223.54 km²3%
- Basin #53010sub-area182,4 km²overlap181.78 km²2%
- Basin #56130sub-area436,7 km²overlap168.78 km²2%
- Basin #27450sub-area197,9 km²overlap136.41 km²2%
- Basin #67990sub-area476,7 km²overlap104.41 km²1%
- Basin #27500sub-area225,5 km²overlap84.51 km²1%
- Basin #59580sub-area374,3 km²overlap76.22 km²1%
- Basin #55050sub-area2 005 km²overlap56.21 km²1%
- Basin #27540sub-area173,1 km²overlap23.67 km²0%
- Basin #48980sub-area2 507,8 km²overlap11.60 km²0%
Lakes (2, top by area)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
4,4%
Pesticides
0,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)