Ouadi Rimé-Ouadi Achim
IUCN IVFaunal Reserve · 1969
83 032 km²
Commune · TCD
Ratanine-Har-Djombo
Chad
BWhArid, desert, hot(100 %)
Species observed
177
Observations
963
Area
14 231,2km²
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 Ratanine-Har-Djombo : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 2 types (connectance 7.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
27
Interactions affichées
25
Connectance
0.071
Patrimoniales
1
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
177 distinct species · 963 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
29,0°C
Annual rain
233mm
Warmest m°
40,5°C
Coldest m°
15,5°C
Elevation: 373 m on average (min 348 m, max 408 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
29,0°C
Annual rain
233mm
Warmest month
40,5°C
Coldest month
15,5°C
Mean alt.
373m
Min
348m
Max
408m
Std. dev.
14m
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
7,7
Org. C
4,1g/kg
Clay
32,5%
Sand
40,8%
Silt
26,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Batha Est
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
7,7
Org. C
4,7g/kg
Clay
31,9%
Sand
41,5%
Silt
26,6%
5–15 cm
pH H₂O
7,7
Org. C
4,0g/kg
Clay
32,4%
Sand
40,8%
Silt
26,8%
15–30 cm
pH H₂O
7,8
Org. C
3,6g/kg
Clay
33,2%
Sand
40,0%
Silt
26,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest1.1%
Crops15.3%
Built-up0.0%
Bare soil12.0%
Other (grassland, water…)71.6%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology44 basins · 0 lakes · 0 rivers
Hydrology metrics for this exact territory
Basins crossed
44
Max drainage
13 314km²
Discharge in basins
6,1m³/s
Mean precip.
248mm/an
Mean T°
29,7°C
Moisture idx
-0,89
Mean runoff
6mm/an
Mean elev. (basins)
382m
Watersheds crossing here
- Basin #58340sub-area2 466,4 km²overlap1530.52 km²11%
- Basin #48410sub-area1 529 km²overlap1324.49 km²9%
- Bassin de Ouadi Miélésub-area1 829,1 km²overlap1032.39 km²7%
- Basin #36280sub-area1 773,8 km²overlap955.09 km²7%
- Basin #57240sub-area907 km²overlap887.91 km²6%
- Basin #50210sub-area1 667,9 km²overlap733.01 km²5%
- Basin #31800sub-area2 030,8 km²overlap713.71 km²5%
- Basin #58460sub-area1 643 km²overlap640.65 km²5%
- Basin #27900sub-area1 475,9 km²overlap523.63 km²4%
35 more basinssorted by overlap
- Basin #20310sub-area1 065 km²overlap495.09 km²3%
- Basin #57110sub-area483,4 km²overlap481.61 km²3%
- Basin #57370sub-area1 563,1 km²overlap464.91 km²3%
- Basin #68810sub-area1 452,4 km²overlap342.73 km²2%
- Basin #24730sub-area507,3 km²overlap330.33 km²2%
- Basin #57490sub-area330,9 km²overlap329.72 km²2%
- Basin #57360sub-area283,9 km²overlap282.82 km²2%
- Basin #79080sub-area398,2 km²overlap278.81 km²2%
- Basin #18600sub-area336,2 km²overlap265.21 km²2%
- Basin #28190sub-area493,7 km²overlap265.14 km²2%
- Basin #18480sub-area1 601,2 km²overlap247.04 km²2%
- Basin #77220sub-area2 244,2 km²overlap222.56 km²2%
- Basin #12310sub-area2 009,1 km²overlap222.49 km²2%
- Basin #50280sub-area806,4 km²overlap210.11 km²1%
- Basin #78800sub-area338,9 km²overlap194.78 km²1%
- Basin #28290sub-area418,1 km²overlap182.71 km²1%
- Basin #69880sub-area514 km²overlap161.24 km²1%
- Basin #65150sub-area255,5 km²overlap153.87 km²1%
- Basin #48600sub-area119,3 km²overlap118.84 km²1%
- Basin #70030sub-area387,5 km²overlap100.06 km²1%
- Bassin de Ouadi Kouskouésub-area1 195,6 km²overlap99.03 km²1%
- Basin #54330sub-area224,5 km²overlap93.12 km²1%
- Basin #12100sub-area580,7 km²overlap71.23 km²1%
- Basin #09990sub-area573,3 km²overlap63.80 km²0%
- Basin #65350sub-area135,9 km²overlap53.62 km²0%
- Basin #66020sub-area1 347 km²overlap36.93 km²0%
- Basin #10110sub-area409,4 km²overlap33.35 km²0%
- Basin #24610sub-area310,1 km²overlap29.29 km²0%
- Basin #65570sub-area28 km²overlap27.87 km²0%
- Basin #78160sub-area1 013,9 km²overlap9.61 km²0%
- Basin #19590sub-area626,9 km²overlap8.32 km²0%
- Basin #78380sub-area466,2 km²overlap6.61 km²0%
- Basin #01360sub-area1 566,8 km²overlap5.18 km²0%
- Basin #57230sub-area0,7 km²overlap0.69 km²0%
- Bassin de Batha البطحةsub-area1 140,1 km²overlap0.35 km²0%
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
0,0%
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