Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
Commune · BEN
Atchonsa
Benin
AwTropical, savannah(100 %)
Species observed
253
Observations
408
Area
72,6km²
Ecological tissue
Sample of 38 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 Atchonsa : 30 espèces reliées par 48 interactions GloBI sur 5 types (connectance 6.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
38
Interactions affichées
48
Connectance
0.068
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
253 distinct species · 408 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,8°C
Annual rain
1 209mm
Warmest m°
34,0°C
Coldest m°
22,3°C
Elevation: 52 m on average (min 6 m, max 124 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,8°C
Annual rain
1 209mm
Warmest month
34,0°C
Coldest month
22,3°C
Mean alt.
52m
Min
6m
Max
124m
Std. dev.
36m
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
6,1
Org. C
22,9g/kg
Clay
30,8%
Sand
48,8%
Silt
20,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Bonou
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,1
Org. C
36,0g/kg
Clay
31,3%
Sand
47,8%
Silt
21,0%
5–15 cm
pH H₂O
6,1
Org. C
19,2g/kg
Clay
30,2%
Sand
49,6%
Silt
20,2%
15–30 cm
pH H₂O
6,1
Org. C
13,7g/kg
Clay
31,0%
Sand
49,1%
Silt
20,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest24.0%
Crops16.9%
Built-up0.6%
Bare soil0.3%
Other (grassland, water…)58.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
8,6km
Basins crossed
2
Max stream order
6
Max drainage
48 989km²
Discharge in basins
10,2m³/s
Mean precip.
1 135mm/an
Mean T°
27,5°C
Moisture idx
-0,31
Mean runoff
372mm/an
Mean elev. (basins)
46m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,0nW
Built-up
62,7%
Pesticides
13,3kg/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