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
3 524
Observations
115 790
Area
3 181,8km²
Sample of 36 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 Atlantique : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 1 bulle famille, 28 interactions GloBI documentées sur 3 types (connectance 4.4%, filtre Serrano α=0.2). Les 1 bulle regroupe des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
3 524 distinct species · 115 790 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
26,6°C
Annual rain
1 187mm
Warmest m°
32,3°C
Coldest m°
22,6°C
Elevation: 47 m on average (min -123 m, max 164 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
5,9
Org. C
22,8g/kg
Clay
25,1%
Sand
59,4%
Silt
15,5%
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
135,9km
Lake surface here
169,86km²
Basins crossed
9
Max stream order
6
Max drainage
58 742km²
Discharge in basins
348,9m³/s
Mean precip.
1 091mm/an
Mean T°
27,3°C
Moisture idx
-0,32
Mean runoff
268mm/an
Mean elev. (basins)
63m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
5hab/km²
Night light
0,8nW
Built-up
354,4%
Pesticides
12,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Wetland of International Importance (Ramsar Site) · 2000
6 532 km²
Wetland of International Importance (Ramsar Site) · 2000
5 245 km²
Classified Forest · 1946
106 km²
Classified Forest · 1942
65 km²
Classified Forest · 1942
38 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN