Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
Department · ben
Benin
Species observed
2 967
Observations
54 837
Area
1 285km²
Sample of 28 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).
Tissu écologique de Ouémé : 26 espèces reliées par 24 interactions GloBI sur 4 types (connectance 6.3%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
2 967 distinct species · 54 837 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
26,6°C
Annual rain
1 255mm
Warmest m°
31,6°C
Coldest m°
22,9°C
Elevation: 22 m on average (min -123 m, max 124 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
5,9
Org. C
28,2g/kg
Clay
34,1%
Sand
45,0%
Silt
20,9%
Average over 0-30 cm. Per-depth details in expert panel.
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
152,9km
Lake surface here
53,31km²
Basins crossed
10
Max stream order
6
Max drainage
58 742km²
Discharge in basins
587,9m³/s
Mean precip.
1 206mm/an
Mean T°
27,4°C
Moisture idx
-0,22
Mean runoff
430mm/an
Mean elev. (basins)
37m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
9hab/km²
Night light
1,1nW
Built-up
531,4%
Pesticides
13,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Wetland of International Importance (Ramsar Site) · 2000
6 532 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN