Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
Commune · BEN
Calavi
Benin
AwTropical, savannah(100 %)
Species observed
1 492
Observations
9 244
Area
53,9km²
Ecological tissue
Sample of 43 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 Calavi : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 52 interactions GloBI sur 6 types (connectance 5.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
43
Interactions affichées
52
Connectance
0.058
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
1 492 distinct species · 9 244 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,6°C
Annual rain
1 238mm
Warmest m°
30,4°C
Coldest m°
23,2°C
Elevation: 15 m on average (min -5 m, max 34 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,6°C
Annual rain
1 238mm
Warmest month
30,4°C
Coldest month
23,2°C
Mean alt.
15m
Min
-5m
Max
34m
Std. dev.
11m
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
5,8
Org. C
22,0g/kg
Clay
21,8%
Sand
64,3%
Silt
13,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Abomey-Calavi
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
33,6g/kg
Clay
21,2%
Sand
64,4%
Silt
14,4%
5–15 cm
pH H₂O
5,8
Org. C
18,9g/kg
Clay
21,5%
Sand
64,6%
Silt
13,9%
15–30 cm
pH H₂O
5,8
Org. C
13,5g/kg
Clay
22,7%
Sand
63,7%
Silt
13,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest3.5%
Crops3.4%
Built-up20.6%
Bare soil0.4%
Other (grassland, water…)72.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 0 rivers
Hydrology metrics for this exact territory
Lake surface here
9,11km²
Basins crossed
2
Max drainage
58 742km²
Discharge in basins
13,3m³/s
Mean precip.
1 110mm/an
Mean T°
27,2°C
Moisture idx
-0,26
Mean runoff
248mm/an
Mean elev. (basins)
44m
Watersheds crossing here
Lakes (1, top by area)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
29hab/km²
Night light
7,9nW
Built-up
2 063,7%
Pesticides
12,3kg/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