Ouadi Rimé-Ouadi Achim
IUCN IVFaunal Reserve · 1969
83 032 km²
Commune · TCD
Arada
Chad
BWhArid, desert, hot(100 %)
Species observed
249
Observations
1 420
Area
17 649,6km²
Ecological tissue
Sample of 25 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 Arada : 18 espèces reliées par 31 interactions GloBI sur 2 types (connectance 9.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
26
Interactions affichées
31
Connectance
0.095
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
249 distinct species · 1 420 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
28,4°C
Annual rain
161mm
Warmest m°
40,2°C
Coldest m°
14,4°C
Elevation: 459 m on average (min 393 m, max 686 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
28,4°C
Annual rain
161mm
Warmest month
40,2°C
Coldest month
14,4°C
Mean alt.
459m
Min
393m
Max
686m
Std. dev.
51m
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
3,8g/kg
Clay
30,8%
Sand
46,7%
Silt
22,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Biltine
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
8,0
Org. C
4,4g/kg
Clay
30,5%
Sand
47,2%
Silt
22,3%
5–15 cm
pH H₂O
8,0
Org. C
3,8g/kg
Clay
31,6%
Sand
46,0%
Silt
22,4%
15–30 cm
pH H₂O
8,0
Org. C
3,2g/kg
Clay
30,4%
Sand
46,9%
Silt
22,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest0.7%
Crops3.8%
Built-up0.0%
Bare soil39.5%
Other (grassland, water…)56.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology48 basins · 0 lakes · 5 rivers
Hydrology metrics for this exact territory
Stream length here
157,6km
Basins crossed
48
Max stream order
4
Max drainage
11 638km²
Discharge in basins
9,7m³/s
Mean precip.
172mm/an
Mean T°
29,1°C
Moisture idx
-0,92
Mean runoff
5mm/an
Mean elev. (basins)
460m
Watersheds crossing here
- Basin #12310sub-area2 009,1 km²overlap1739.83 km²10%
- Basin #18480sub-area1 601,2 km²overlap1306.02 km²7%
- Bassin de Ouadi Soforousub-area1 917,7 km²overlap1277.92 km²7%
- Basin #00340sub-area1 251,9 km²overlap1171.48 km²7%
- Bassin de أوادي هواش Ouadi Hawachsub-area1 017,3 km²overlap925.74 km²5%
- Basin #03400sub-area918,8 km²overlap783.06 km²4%
- Bassin de Ouadi Miélésub-area1 829,1 km²overlap748.08 km²4%
- Basin #50210sub-area1 667,9 km²overlap689.05 km²4%
- Basin #01360sub-area1 566,8 km²overlap674.29 km²4%
39 more basinssorted by overlap
- Bassin de Ouadi Hawachsub-area1 366,7 km²overlap586.75 km²3%
- Basin #23450sub-area1 049,1 km²overlap532.57 km²3%
- Basin #16990sub-area612 km²overlap514.81 km²3%
- Basin #20310sub-area1 065 km²overlap497.69 km²3%
- Basin #08320sub-area459,7 km²overlap458.07 km²3%
- Basin #12100sub-area580,7 km²overlap441.58 km²3%
- Basin #00700sub-area623,5 km²overlap413.96 km²2%
- Bassin de Ouadi Hawachsub-area1 659 km²overlap384.03 km²2%
- Basin #10750sub-area380,5 km²overlap379.17 km²2%
- Basin #28820sub-area314,3 km²overlap313.20 km²2%
- Basin #36280sub-area1 773,8 km²overlap303.03 km²2%
- Bassin de Ouadi Soforousub-area300,3 km²overlap299.23 km²2%
- Basin #09290sub-area268,3 km²overlap267.36 km²2%
- Basin #10500sub-area248,6 km²overlap247.69 km²1%
- Basin #07980sub-area230,5 km²overlap229.70 km²1%
- Bassin de Ouadi Ardasub-area1 714,6 km²overlap219.63 km²1%
- Bassin de Ouadi Kouskouésub-area1 195,6 km²overlap219.29 km²1%
- Basin #48410sub-area1 529 km²overlap199.01 km²1%
- Basin #10110sub-area409,4 km²overlap197.88 km²1%
- Basin #09990sub-area573,3 km²overlap181.68 km²1%
- Basin #03280sub-area159,6 km²overlap159.07 km²1%
- Basin #52480sub-area165,3 km²overlap157.23 km²1%
- Basin #09150sub-area137,9 km²overlap137.40 km²1%
- Basin #03140sub-area358,3 km²overlap127.73 km²1%
- Bassin de Ouadi Soforousub-area128,2 km²overlap127.70 km²1%
- Bassin de أوادي هواش Ouadi Hawachsub-area1 016,4 km²overlap104.11 km²1%
- Bassin de Ouadi Barasub-area2 236,7 km²overlap98.58 km²1%
- Basin #02930sub-area203,4 km²overlap84.83 km²0%
- Bassin de Ouadi Hawachsub-area432 km²overlap81.28 km²0%
- Basin #28190sub-area493,7 km²overlap75.37 km²0%
- Basin #54330sub-area224,5 km²overlap66.73 km²0%
- Basin #01000sub-area65,5 km²overlap65.28 km²0%
- Bassin de Ouadi Kérikosub-area2 148,2 km²overlap62.04 km²0%
- Basin #50820sub-area194,6 km²overlap38.84 km²0%
- Basin #52780sub-area166,6 km²overlap31.96 km²0%
- Basin #18600sub-area336,2 km²overlap20.93 km²0%
- Basin #49180sub-area698,4 km²overlap6.50 km²0%
- Basin #27900sub-area1 475,9 km²overlap2.48 km²0%
- Basin #57240sub-area907 km²overlap0.15 km²0%
Rivers / streams (5, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
0,3%
Pesticides
0,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN IV · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN