Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
State · nga
Lagos
Nigeria
AwTropical, savannah(100 %)
Species observed
3 512
Observations
27 324
Area
3 784,5km²
Ecological tissue
Sample of 33 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 Lagos : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 5 types (connectance 6.8%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
33
Interactions affichées
36
Connectance
0.068
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 512 distinct species · 27 324 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,5°C
Annual rain
1 660mm
Warmest m°
30,5°C
Coldest m°
23,3°C
Elevation: 1 m on average (min -155 m, max 71 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,5°C
Annual rain
1 660mm
Warmest month
30,5°C
Coldest month
23,3°C
Mean alt.
1m
Min
-155m
Max
71m
Std. dev.
28m
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
5,4
Org. C
28,1g/kg
Clay
20,2%
Sand
59,6%
Silt
20,2%
Average over 0-30 cm. Per-depth details in expert panel.
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,4
Org. C
38,8g/kg
Clay
19,2%
Sand
60,2%
Silt
20,6%
5–15 cm
pH H₂O
5,4
Org. C
26,8g/kg
Clay
19,2%
Sand
60,4%
Silt
20,3%
15–30 cm
pH H₂O
5,4
Org. C
18,8g/kg
Clay
22,2%
Sand
58,2%
Silt
19,6%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest22.6%
Crops4.5%
Built-up10.3%
Bare soil0.8%
Other (grassland, water…)61.7%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology19 basins · 8 lakes · 20 rivers
Hydrology metrics for this exact territory
Stream length here
157,5km
Lake surface here
640,27km²
Basins crossed
19
Max stream order
7
Max drainage
48 394km²
Discharge in basins
1 784,6m³/s
Mean precip.
1 612mm/an
Mean T°
27,1°C
Moisture idx
0,07
Mean runoff
769mm/an
Mean elev. (basins)
29m
Watersheds crossing here
- Bassin de Majidun Creeksub-area1 428,6 km²overlap772.76 km²20%
- Bassin de Badagry Creeksub-area698 km²overlap694.90 km²18%
- Bassin de River Owosub-area1 678,9 km²overlap639.85 km²17%
- Basin #59550sub-area2 625,2 km²overlap503.66 km²13%
- Bassin de Osun Riversub-area581,7 km²overlap296.82 km²8%
- Basin #22990sub-area532,6 km²overlap187.66 km²5%
- Bassin de Badagry Creeksub-area217,9 km²overlap160.11 km²4%
- Bassin de Ogunsub-area2 088 km²overlap108.12 km²3%
- Bassin de Oshun Riversub-area2 687,3 km²overlap105.58 km²3%
10 more basinssorted by overlap
- Bassin de Yewasub-area1 213,4 km²overlap81.86 km²2%
- Basin #63590sub-area172,5 km²overlap70.14 km²2%
- Bassin de Aye Riversub-area107 km²overlap57.54 km²2%
- Bassin de Onisub-area599,4 km²overlap30.37 km²1%
- Basin #64480sub-area131,4 km²overlap28.82 km²1%
- Basin #59150sub-area26 km²overlap25.55 km²1%
- Basin #59390sub-area35,4 km²overlap12.83 km²0%
- Bassin de Sasasub-area628,7 km²overlap4.46 km²0%
- Bassin de Canal d'Akôdjisub-area141,1 km²overlap3.06 km²0%
- Bassin de Gli-Awoyosub-area1 014,7 km²overlap0.23 km²0%
Lakes (8, top by area)
Rivers / streams (20, ord ≥ 4)
- River Owoord 4len here27.28 km87%total31 km
- Badagry Creekord 7len here22.15 km100%total22 km
- Five Cowries Creekord 2len here15.31 km100%total15 km
- Ogudu Creekord 2len here15.10 km100%total15 km
- Aye Riverord 5len here13.05 km82%total16 km
- Guiness Drainage Canalord 1len here7.91 km100%total8 km
- Agboyi Creekord 6len here7.38 km100%total7 km
- Ajegunle Canalord 1len here7.31 km100%total7 km
- Majidun Creekord 3len here7.00 km100%total7 km
- Lagos Harbourord 7len here5.94 km100%total6 km
- Osun Riverord 5len here5.73 km26%total22 km
- Badagry Creekord 2len here5.41 km100%total5 km
8 more river segmentssorted by Strahler order + length
- Ebute Metta Creekord 1len here3.65 km100%total4 km
- Mosafejo Riverord 4len here3.54 km29%total12 km
- Ogunord 6len here3.11 km1%total449 km
- Sunmogeord 4len here2.60 km29%total9 km
- Oshun Riverord 5len here2.32 km1%total216 km
- Commodore Channelord 7len here2.00 km98%total2 km
- Lighthouse Creekord 1len here0.69 km100%total1 km
- Saga Riverord 1len here≈ tangenttotal3 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
27hab/km²
Night light
4,5nW
Built-up
1 031,8%
Pesticides
36,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN V · 1IUCN Not Reported · 1IUCN Ia · 1🌊 Marine · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations20
- AgegeLocal Authority
- Ajeromi/IfelodunLocal Authority
- AlimoshoLocal Authority
- Amuwo OdofinLocal Authority
- ApapaLocal Authority
- BadagryLocal Authority
- EpeLocal Authority
- Eti-OsaLocal Authority
- Ibeju-LekkiLocal Authority
- Ifako/IjayeLocal Authority
- IkejaLocal Authority
- IkoroduLocal Authority
- KosofeLocal Authority
- Lagos IslandLocal Authority
- MainlandLocal Authority
- MushinLocal Authority
- OjoLocal Authority
- Oshodi/IsoloLocal Authority
- ShomoluLocal Authority
- SurulereLocal Authority