Bas Ogooue
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 2009
13 637 km²
Department · GAB
Ogooué et des Lacs
Gabon
AwTropical, savannah(94 %)
Species observed
2 382
Observations
26 893
Area
8 660km²
Ecological tissue
Sample of 12 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 Ogooué et des Lacs : 11 espèces reliées par 8 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
12
Interactions affichées
8
Connectance
0.121
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
2 382 distinct species · 26 893 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
25,5°C
Annual rain
2 275mm
Warmest m°
30,5°C
Coldest m°
20,9°C
Elevation: 51 m on average (min 5 m, max 573 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
25,5°C
Annual rain
2 275mm
Warmest month
30,5°C
Coldest month
20,9°C
Mean alt.
51m
Min
5m
Max
573m
Std. dev.
51m
Köppen-Geiger (dominant)
AwTropical, savannah(94 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,0
Org. C
33,2g/kg
Clay
22,6%
Sand
53,5%
Silt
23,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: wbGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,0
Org. C
41,4g/kg
Clay
21,5%
Sand
54,3%
Silt
24,2%
5–15 cm
pH H₂O
5,0
Org. C
32,8g/kg
Clay
21,3%
Sand
54,6%
Silt
24,1%
15–30 cm
pH H₂O
5,0
Org. C
25,5g/kg
Clay
25,0%
Sand
51,7%
Silt
23,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest84.8%
Crops0.3%
Built-up0.0%
Bare soil0.0%
Other (grassland, water…)14.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology28 basins · 50 lakes · 13 rivers
Hydrology metrics for this exact territory
Stream length here
693,7km
Lake surface here
436,29km²
Basins crossed
28
Max stream order
7
Max drainage
208 965km²
Discharge in basins
17 119,4m³/s
Mean precip.
2 084mm/an
Mean T°
25,9°C
Moisture idx
0,25
Mean runoff
1 013mm/an
Mean elev. (basins)
75m
Watersheds crossing here
- Bassin de Ezangasub-area1 983 km²overlap1786.16 km²21%
- Bassin de Ngouniésub-area1 475,9 km²overlap1243.11 km²14%
- Bassin de Rèmbo Ouangosub-area992,4 km²overlap911.94 km²11%
- Bassin de Ogoouésub-area854,4 km²overlap850.63 km²10%
- Bassin de Rembo Azingosub-area720 km²overlap695.32 km²8%
- Bassin de Ogoouésub-area595,1 km²overlap576.25 km²7%
- Bassin de Mbinésub-area752,7 km²overlap498.67 km²6%
- Bassin de M'boumisub-area1 606,3 km²overlap445.96 km²5%
- Bassin de Ogoouésub-area465,7 km²overlap433.22 km²5%
19 more basinssorted by overlap
- Bassin de Rèmbo Ouangosub-area407,4 km²overlap405.56 km²5%
- Basin #57430sub-area303,5 km²overlap297.97 km²3%
- Bassin de Orongasub-area225,2 km²overlap224.22 km²3%
- Bassin de Rèmbo Ouangosub-area434,4 km²overlap181.97 km²2%
- Bassin de Rèmbo Ouangosub-area34,2 km²overlap34.09 km²0%
- Bassin de Ogoouésub-area521,7 km²overlap15.14 km²0%
- Bassin de Ikoysub-area499,2 km²overlap11.71 km²0%
- Bassin de Niémbisub-area997,5 km²overlap9.68 km²0%
- Bassin de Rambouèsub-area377,4 km²overlap8.63 km²0%
- Bassin de Ogoouésub-area124,1 km²overlap8.28 km²0%
- Bassin de Lalitiésub-area1 091,5 km²overlap6.65 km²0%
- Bassin de Ogoouésub-area447,1 km²overlap5.70 km²0%
- Bassin de Ogoouésub-area3,6 km²overlap3.63 km²0%
- Bassin de Bilagonesub-area1 400,4 km²overlap2.19 km²0%
- Basin #49510sub-area125,8 km²overlap1.86 km²0%
- Bassin de Noouésub-area264,6 km²overlap0.77 km²0%
- Basin #20730sub-area798,2 km²overlap0.48 km²0%
- Bassin de Ngouniésub-area2 146,8 km²overlap0.19 km²0%
- Bassin de Ovanguésub-area1 347,7 km²overlap0.00 km²0%
Lakes (50, top by area)
- Onanguearea249 km²avg depth29.2 m
- Lac Azingoarea55,3 km²avg depth11.4 m
- Lac Goméarea14,3 km²avg depth7.0 m
- Lac Nkoniéarea14 km²avg depth11.0 m
- Lac Ziléarea8 km²avg depth6.8 m
- Lac Evaroarea7,7 km²avg depth7.0 m
- Lac Nyondjé d’Amontarea7 km²avg depth9.4 m
- Lac Logéarea6,9 km²avg depth7.1 m
- Lac Inyogoarea6,4 km²avg depth5.9 m
41 more lakes
- Lac Déguèliéarea6,2 km²avg depth7.4 m
- Lac Iouandéarea5,3 km²avg depth3.5 m
- Lac Nyayéarea5,2 km²avg depth1.7 m
- Lac Ouambéarea5,1 km²avg depth10.6 m
- Lac Adoléarea4,3 km²avg depth5.9 m
- Lac Ntchoniéarea3,9 km²avg depth6.2 m
- Lac Igoulouéarea3,7 km²avg depth11.8 m
- Lac Ogondouéarea3,5 km²avg depth7.9 m
- Lac Pandjéarea2,3 km²avg depth2.7 m
- Lac Nyondjé d’Avalarea2,3 km²avg depth9.2 m
- Lac Gombouéarea2,2 km²avg depth6.9 m
- Lac Ogonbiéarea2 km²avg depth10.7 m
- Lac Akombiéarea2 km²avg depth7.6 m
- Lac Kébandaarea1,9 km²avg depth6.5 m
- Lac Karilembaarea1,7 km²avg depth3.9 m
- Lac Nyondjé Avalarea1,4 km²avg depth8.5 m
- Lac Bagéarea1,1 km²avg depth6.4 m
- Lac 1407399area1 km²avg depth5.0 m
- Lac 1407277area0,9 km²avg depth4.2 m
- Lac 1407288area0,9 km²avg depth3.7 m
- Lac 1407405area0,9 km²avg depth5.5 m
- Lac 1407358area0,8 km²avg depth5.5 m
- Lac 1407363area0,8 km²avg depth3.9 m
- Lac 1407432area0,8 km²avg depth1.9 m
- Lac 1407367area0,8 km²avg depth4.8 m
- Lac 1407338area0,7 km²avg depth6.5 m
- Lac 1407369area0,6 km²avg depth4.1 m
- Lac 1407327area0,6 km²avg depth4.1 m
- Lac 1407186area0,6 km²avg depth4.9 m
- Lac 1407463area0,6 km²avg depth5.0 m
- Lac 1407379area0,6 km²avg depth6.0 m
- Lac 1407211area0,6 km²avg depth3.9 m
- Lac 1407340area0,6 km²avg depth3.6 m
- Lac 1407307area0,6 km²avg depth2.6 m
- Lac 1407271area0,5 km²avg depth2.0 m
- Lac 1407392area0,5 km²avg depth6.3 m
- Lac 1407394area0,5 km²avg depth4.5 m
- Lac 1407317area0,5 km²avg depth4.0 m
- Lac 1407429area0,5 km²avg depth2.7 m
- Lac 1407428area0,4 km²avg depth5.2 m
- Lac 1407287area0,4 km²avg depth4.3 m
Rivers / streams (13, ord ≥ 4)
- Ogoouéord 7len here196.15 km10%total1966 km
- Rèmbo Ouangoord 5len here104.79 km64%total165 km
- Ngouniéord 6len here79.43 km9%total872 km
- Mandjibéord 6len here71.39 km92%total77 km
- Rembo Azingoord 4len here61.06 km100%total61 km
- Mbinéord 4len here52.67 km100%total53 km
- Orongaord 4len here35.05 km100%total35 km
- Ezangaord 4len here25.28 km100%total25 km
- M'boumiord 7len here23.38 km15%total153 km
- Agoumaord 2len here22.53 km100%total23 km
- Rèmbo Sogouéord 2len here11.98 km100%total12 km
- Deguelieord 3len here7.42 km100%total7 km
1 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
4,1%
Pesticides
17,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN Not Reported · 2IUCN IV · 1🌊 Marine · 3
Reserve Présidentielle Wonga Wongué
IUCN Not ReportedPresidential reserve · 1972
4 260 km²
Wonga-Wongué
IUCN IVWetland of International Importance (Ramsar Site) · 1986
3 966 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN