Ontologia

State · nga

Rivers

Nigeria

AmTropical, monsoon(97 %)

Species observed

1 362

Observations

6 487

Area

8 534,5km²

Ecological tissue

Sample of 32 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 Rivers : 28 espèces reliées par 28 interactions GloBI sur 3 types (connectance 5.6%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
28
Connectance
0.057
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

1 362 distinct species · 6 487 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 487 obs · 136 cellules
Obs. / cellule
≥ 321
124–320
47–123
21–46
< 21

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

Climate

Mean T°

26,0°C

Annual rain

2 441mm

Warmest m°

31,8°C

Coldest m°

22,6°C

Elevation: 13 m on average (min -52 m, max 62 m)

Bioclimatic detailsExpert
Annual mean temp.
26,0°C
Annual rain
2 441mm
Warmest month
31,8°C
Coldest month
22,6°C
Mean alt.
13m
Min
-52m
Max
62m
Std. dev.
11m
Köppen-Geiger (dominant)
AmTropical, monsoon(97 %)Tropical

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

Soil & lithology

pH H₂O

5,1

Org. C

29,4g/kg

Clay

22,3%

Sand

58,4%

Silt

19,2%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,2
Org. C
40,3g/kg
Clay
21,1%
Sand
59,3%
Silt
19,6%
5–15 cm
pH H₂O
5,1
Org. C
29,4g/kg
Clay
21,5%
Sand
59,2%
Silt
19,2%
15–30 cm
pH H₂O
5,1
Org. C
18,5g/kg
Clay
24,3%
Sand
56,8%
Silt
18,9%

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

Land cover

Forest42.7%
Crops7.3%
Built-up2.1%
Bare soil0.1%
Other (grassland, water…)47.7%

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

Hydrology26 basins · 9 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

1 193,5km

Lake surface here

2,96km²

Basins crossed

26

Max stream order

8

Max drainage

2 097 290km²

Discharge in basins

1 319,1m³/s

Mean precip.

2 755mm/an

Mean T°

26,6°C

Moisture idx

0,42

Mean runoff

1 493mm/an

Mean elev. (basins)

26m

Watersheds crossing here

17 more basins

Lakes (9, top by area)

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

9hab/km²

Night light

3,2nW

Built-up

211,1%

Pesticides

35,6kg/km²

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

Protected areas10

IUCN Not Reported · 9IUCN VI · 1🌊 Marine · 1

Edumanom

IUCN Not Reported

National Park · 2020

296 km²

Sambrero

IUCN Not Reported

Forest Reserve

137 km²

Complete list

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

Sub-administrations23