Ontologia

State · nga

Delta

Nigeria

AmTropical, monsoon(83 %)

Species observed

1 481

Observations

12 355

Area

16 624,1km²

Ecological tissue

Sample of 35 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 Delta : 31 espèces reliées par 28 interactions GloBI sur 4 types (connectance 4.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
28
Connectance
0.047
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

1 481 distinct species · 12 355 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

12 355 obs · 245 cellules
Obs. / cellule
≥ 346
142–345
55–141
25–54
< 25

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

Climate

Mean T°

26,1°C

Annual rain

2 500mm

Warmest m°

32,7°C

Coldest m°

22,4°C

Elevation: 33 m on average (min -8 m, max 275 m)

Bioclimatic detailsExpert
Annual mean temp.
26,1°C
Annual rain
2 500mm
Warmest month
32,7°C
Coldest month
22,4°C
Mean alt.
33m
Min
-8m
Max
275m
Std. dev.
57m
Köppen-Geiger (dominant)
AmTropical, monsoon(83 %)Tropical

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

Soil & lithology

pH H₂O

5,3

Org. C

28,3g/kg

Clay

25,0%

Sand

53,8%

Silt

21,2%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
37,7g/kg
Clay
23,4%
Sand
55,1%
Silt
21,5%
5–15 cm
pH H₂O
5,3
Org. C
28,7g/kg
Clay
24,2%
Sand
54,5%
Silt
21,4%
15–30 cm
pH H₂O
5,3
Org. C
18,4g/kg
Clay
27,3%
Sand
51,9%
Silt
20,8%

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

Land cover

Forest42.6%
Crops7.6%
Built-up1.3%
Bare soil0.2%
Other (grassland, water…)48.3%

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

Hydrology44 basins · 32 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

2 276,9km

Lake surface here

8,54km²

Basins crossed

44

Max stream order

8

Max drainage

2 097 290km²

Discharge in basins

9 776,9m³/s

Mean precip.

2 494mm/an

Mean T°

26,6°C

Moisture idx

0,35

Mean runoff

1 595mm/an

Mean elev. (basins)

38m

Watersheds crossing here

35 more basins

Lakes (32, top by area)

23 more lakes

Rivers / streams (100, ord ≥ 4)

88 more river segments

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

Human pressure

Pop. density

3hab/km²

Night light

2,6nW

Built-up

126,6%

Pesticides

37,3kg/km²

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

Protected areas17

IUCN Not Reported · 16IUCN IV · 1🌊 Marine · 4📍 Point sites · 2

Sapoba

IUCN Not Reported

Forest Reserve · 1912

523 km²

Olague

IUCN Not Reported

Forest Reserve

233 km²

Ekenwan

IUCN Not Reported

Forest Reserve

211 km²

Complete list

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

Sub-administrations25