Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
Commune · BEN
Tchaada
Benin
AwTropical, savannah(100 %)
Species observed
158
Observations
295
Area
8,8km²
Ecological tissue
Sample of 16 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 Tchaada : 14 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 14 interactions GloBI sur 2 types (connectance 11.7%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
16
Interactions affichées
14
Connectance
0.117
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
158 distinct species · 295 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,4°C
Annual rain
1 401mm
Warmest m°
31,4°C
Coldest m°
22,7°C
Elevation: 38 m on average (min 25 m, max 49 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,4°C
Annual rain
1 401mm
Warmest month
31,4°C
Coldest month
22,7°C
Mean alt.
38m
Min
25m
Max
49m
Std. dev.
7m
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
5,9
Org. C
19,8g/kg
Clay
18,6%
Sand
70,8%
Silt
10,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Ifangni
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
30,1g/kg
Clay
18,5%
Sand
70,3%
Silt
11,2%
5–15 cm
pH H₂O
5,9
Org. C
17,9g/kg
Clay
17,0%
Sand
72,6%
Silt
10,3%
15–30 cm
pH H₂O
5,8
Org. C
11,5g/kg
Clay
20,4%
Sand
69,6%
Silt
10,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest15.1%
Crops4.1%
Built-up8.2%
Bare soil0.2%
Other (grassland, water…)72.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 0 rivers
Hydrology metrics for this exact territory
Basins crossed
1
Max drainage
1 015km²
Discharge in basins
0,1m³/s
Mean precip.
1 242mm/an
Mean T°
27,2°C
Moisture idx
-0,21
Mean runoff
485mm/an
Mean elev. (basins)
65m
Watersheds crossing here
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
15hab/km²
Night light
0,8nW
Built-up
819,1%
Pesticides
13,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN V · 1🌊 Marine · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN