Mamu River
IUCN Not ReportedForest Reserve
52 km²
Local Authority · NGA
Oji-River
Nigeria
AwTropical, savannah(79 %)
Species observed
330
Observations
632
Area
371,4km²
Ecological tissue
Sample of 32 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 Oji-River : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 4 types (connectance 6.2%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
32
Interactions affichées
31
Connectance
0.063
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
330 distinct species · 632 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,5°C
Annual rain
2 176mm
Warmest m°
34,9°C
Coldest m°
22,1°C
Elevation: 136 m on average (min 36 m, max 368 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,5°C
Annual rain
2 176mm
Warmest month
34,9°C
Coldest month
22,1°C
Mean alt.
136m
Min
36m
Max
368m
Std. dev.
76m
Köppen-Geiger (dominant)
AwTropical, savannah(79 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,4
Org. C
18,5g/kg
Clay
20,7%
Sand
58,2%
Silt
21,1%
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
0–5 cm
pH H₂O
5,4
Org. C
24,3g/kg
Clay
19,2%
Sand
60,2%
Silt
20,6%
5–15 cm
pH H₂O
5,4
Org. C
19,4g/kg
Clay
19,7%
Sand
58,7%
Silt
21,6%
15–30 cm
pH H₂O
5,3
Org. C
11,7g/kg
Clay
23,4%
Sand
55,7%
Silt
21,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest41.0%
Crops10.2%
Built-up2.1%
Bare soil0.2%
Other (grassland, water…)46.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
9,2km
Basins crossed
2
Max stream order
4
Max drainage
4 090km²
Discharge in basins
13,2m³/s
Mean precip.
1 765mm/an
Mean T°
26,5°C
Moisture idx
0,08
Mean runoff
1 117mm/an
Mean elev. (basins)
173m
Watersheds crossing here
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
4hab/km²
Night light
0,1nW
Built-up
213,1%
Pesticides
40,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN Not Reported · 3
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN