Manda
IUCN IINational Park · 1969
951 km²
Commune · TCD
Niellim
Chad
AwTropical, savannah(100 %)
Species observed
55
Observations
107
Area
1 359,9km²
Ecological tissue
Sample of 12 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 Niellim : 11 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 9 interactions GloBI sur 2 types (connectance 13.6%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
12
Interactions affichées
9
Connectance
0.136
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
55 distinct species · 107 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
27,7°C
Annual rain
982mm
Warmest m°
39,0°C
Coldest m°
18,1°C
Elevation: 376 m on average (min 348 m, max 433 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
27,7°C
Annual rain
982mm
Warmest month
39,0°C
Coldest month
18,1°C
Mean alt.
376m
Min
348m
Max
433m
Std. dev.
20m
Köppen-Geiger (dominant)
AwTropical, savannah(100 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,2
Org. C
11,1g/kg
Clay
26,6%
Sand
44,9%
Silt
28,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Barh Köh
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,2
Org. C
15,5g/kg
Clay
23,7%
Sand
46,9%
Silt
29,3%
5–15 cm
pH H₂O
6,2
Org. C
11,6g/kg
Clay
24,9%
Sand
46,2%
Silt
28,9%
15–30 cm
pH H₂O
6,2
Org. C
6,3g/kg
Clay
31,0%
Sand
41,5%
Silt
27,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest20.7%
Crops10.7%
Built-up0.0%
Bare soil0.3%
Other (grassland, water…)68.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology5 basins · 3 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
100,9km
Lake surface here
0,85km²
Basins crossed
5
Max stream order
8
Max drainage
469 020km²
Discharge in basins
423,0m³/s
Mean precip.
960mm/an
Mean T°
27,9°C
Moisture idx
-0,54
Mean runoff
189mm/an
Mean elev. (basins)
371m
Watersheds crossing here
Lakes (3, top by area)
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
3,5%
Pesticides
0,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN II · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN