Ontologia

Province · gab

Estuaire

Gabon

AmTropical, monsoon(80 %)

Species observed

5 514

Observations

90 323

Area

19 890,6km²

Ecological tissue

Sample of 15 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 Estuaire : 14 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 2 types (connectance 10.5%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
15
Interactions affichées
11
Connectance
0.105
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

5 514 distinct species · 90 323 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

90 323 obs · 410 cellules
Obs. / cellule
≥ 3 759
387–3 758
126–386
37–125
< 37

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

24,7°C

Annual rain

2 816mm

Warmest m°

29,6°C

Coldest m°

20,9°C

Elevation: 156 m on average (min -15 m, max 743 m)

Bioclimatic detailsExpert
Annual mean temp.
24,7°C
Annual rain
2 816mm
Warmest month
29,6°C
Coldest month
20,9°C
Mean alt.
156m
Min
-15m
Max
743m
Std. dev.
195m
Köppen-Geiger (dominant)
AmTropical, monsoon(80 %)Tropical

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

4,9

Org. C

40,4g/kg

Clay

31,5%

Sand

46,0%

Silt

22,5%

Average over 0-30 cm. Per-depth details in expert panel.

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,9
Org. C
49,9g/kg
Clay
30,8%
Sand
46,6%
Silt
22,7%
5–15 cm
pH H₂O
4,9
Org. C
39,4g/kg
Clay
30,7%
Sand
46,5%
Silt
22,8%
15–30 cm
pH H₂O
4,9
Org. C
32,1g/kg
Clay
33,0%
Sand
44,8%
Silt
22,2%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest87.7%
Crops0.3%
Built-up0.3%
Bare soil0.0%
Other (grassland, water…)11.6%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology48 basins · 10 lakes · 87 rivers

Hydrology metrics for this exact territory

Stream length here

1 886,1km

Lake surface here

5,97km²

Basins crossed

48

Max stream order

6

Max drainage

8 204km²

Discharge in basins

2 194,7m³/s

Mean precip.

2 448mm/an

Mean T°

25,2°C

Moisture idx

0,39

Mean runoff

1 547mm/an

Mean elev. (basins)

184m

Watersheds crossing here

39 more basins

Lakes (10, top by area)

1 more lakes

Rivers / streams (87, ord ≥ 4)

75 more river segments

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

30,3%

Pesticides

21,0kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas14

IUCN Not Reported · 8IUCN II · 5IUCN IV · 1🌊 Marine · 12

Bas Ogooue

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 2009

13 637 km²

Wonga-Wongué

IUCN IV

Wetland of International Importance (Ramsar Site) · 1986

3 966 km²

Pongara

IUCN II

Wetland of International Importance (Ramsar Site) · 2007

959 km²

Complete list

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

Sub-administrations3