Department · MRT
Néma
Mauritania
Species observed
209
Observations
971
Area
9 927,6km²
Ecological tissue
Sample of 15 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 Néma : 13 espèces reliées par 13 interactions GloBI sur 3 types (connectance 12.4%, filtre Serrano α=0.2). 2 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
209 distinct species · 971 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
29,7°C
Annual rain
247mm
Warmest m°
41,0°C
Coldest m°
14,9°C
Elevation: 266 m on average (min 171 m, max 411 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
7,6
Org. C
4,5g/kg
Clay
27,0%
Sand
50,4%
Silt
22,5%
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)
Hydrology35 basins · 0 lakes · 7 rivers
Hydrology metrics for this exact territory
Stream length here
143,3km
Basins crossed
35
Max stream order
4
Max drainage
6 268km²
Discharge in basins
7,7m³/s
Mean precip.
232mm/an
Mean T°
29,6°C
Moisture idx
-0,89
Mean runoff
21mm/an
Mean elev. (basins)
260m
Watersheds crossing here
- Basin #61440sub-area1 572,7 km²overlap1529.53 km²15%
- Bassin de Taroutalasub-area6 266,9 km²overlap1228.45 km²12%
- Bassin de Krâ’ el Akhdarsub-area1 185,8 km²overlap1181.73 km²12%
- Basin #48350sub-area2 189,2 km²overlap680.10 km²7%
- Basin #70640sub-area2 450,8 km²overlap608.71 km²6%
- Bassin de Oued ’Aoueïnât el Rouassisub-area563 km²overlap561.12 km²6%
- Basin #76490sub-area444 km²overlap442.52 km²4%
- Bassin de Gata Chiratitsub-area767,1 km²overlap402.30 km²4%
- Basin #83390sub-area521,2 km²overlap394.69 km²4%
26 more basinssorted by overlap
- Bassin de Oued Sbei‘lsub-area476,2 km²overlap301.50 km²3%
- Basin #73910sub-area282,2 km²overlap281.25 km²3%
- Bassin de Krâ’ el Akhdarsub-area257,3 km²overlap256.43 km²3%
- Basin #48660sub-area1 987,2 km²overlap250.14 km²3%
- Basin #80760sub-area224,6 km²overlap223.82 km²2%
- Basin #47650sub-area601,2 km²overlap221.47 km²2%
- Basin #47520sub-area522,9 km²overlap196.72 km²2%
- Bassin de Jrèïksub-area875,2 km²overlap153.10 km²2%
- Basin #70470sub-area2 817,4 km²overlap152.66 km²2%
- Bassin de Krâ’ el Akhdarsub-area144,3 km²overlap143.83 km²1%
- Basin #61610sub-area853,1 km²overlap118.84 km²1%
- Basin #72020sub-area2 627,9 km²overlap104.19 km²1%
- Basin #80930sub-area99,5 km²overlap99.14 km²1%
- Basin #43780sub-area91 km²overlap90.68 km²1%
- Basin #75810sub-area1 137,4 km²overlap81.23 km²1%
- Basin #76350sub-area248,2 km²overlap62.84 km²1%
- Bassin de Acheghdoufsub-area611,1 km²overlap42.85 km²0%
- Basin #75730sub-area42,5 km²overlap42.34 km²0%
- Basin #51540sub-area367,1 km²overlap28.03 km²0%
- Basin #51140sub-area881,7 km²overlap20.52 km²0%
- Basin #61790sub-area13,7 km²overlap13.67 km²0%
- Basin #61250sub-area387,6 km²overlap6.33 km²0%
- Basin #43210sub-area33,1 km²overlap4.00 km²0%
- Basin #44310sub-area1,9 km²overlap1.89 km²0%
- Bassin de Légéilasub-area1 110,5 km²overlap0.21 km²0%
- Basin #71600sub-area1 873,6 km²overlap0.03 km²0%
Rivers / streams (7, ord ≥ 4)
- Oued ’Aoueïnât el Rouassiord 3len here46.33 km100%total46 km
- Krâ’ el Akhdarord 4len here33.58 km100%total34 km
- Gata Chiratitord 4len here30.27 km98%total31 km
- Oued Archâneord 3len here16.29 km64%total26 km
- Krâ’ el Kettaneord 2len here12.11 km100%total12 km
- Krâ’ el Akhdarord 1len here3.98 km100%total4 km
- Oued Sbei‘lord 4len here0.73 km3%total27 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
4,2%
Pesticides
0,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)