Ontologia

State · nga

Anambra

Nigeria

AwTropical, savannah(92 %)

Species observed

651

Observations

2 337

Area

4 590,2km²

Ecological tissue

Sample of 40 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 Anambra : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 4 types (connectance 5.3%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
41
Connectance
0.053
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

651 distinct species · 2 337 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 337 obs · 79 cellules
Obs. / cellule
≥ 201
90–200
30–89
10–29
< 10

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

Climate

Mean T°

26,7°C

Annual rain

1 937mm

Warmest m°

35,0°C

Coldest m°

22,5°C

Elevation: 75 m on average (min 11 m, max 355 m)

Bioclimatic detailsExpert
Annual mean temp.
26,7°C
Annual rain
1 937mm
Warmest month
35,0°C
Coldest month
22,5°C
Mean alt.
75m
Min
11m
Max
355m
Std. dev.
67m
Köppen-Geiger (dominant)
AwTropical, savannah(92 %)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

17,7g/kg

Clay

21,2%

Sand

55,3%

Silt

23,6%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,5
Org. C
23,9g/kg
Clay
19,1%
Sand
57,3%
Silt
23,6%
5–15 cm
pH H₂O
5,4
Org. C
17,8g/kg
Clay
19,9%
Sand
56,0%
Silt
24,1%
15–30 cm
pH H₂O
5,4
Org. C
11,4g/kg
Clay
24,6%
Sand
52,5%
Silt
23,0%

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

Land cover

Forest23.9%
Crops14.3%
Built-up5.0%
Bare soil0.6%
Other (grassland, water…)56.2%

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

Hydrology14 basins · 16 lakes · 13 rivers

Hydrology metrics for this exact territory

Stream length here

361,4km

Lake surface here

4,15km²

Basins crossed

14

Max stream order

8

Max drainage

2 097 290km²

Discharge in basins

10 410,5m³/s

Mean precip.

1 817mm/an

Mean T°

26,8°C

Moisture idx

0,09

Mean runoff

1 192mm/an

Mean elev. (basins)

104m

Watersheds crossing here

5 more basins

Lakes (16, top by area)

7 more lakes

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

Human pressure

Pop. density

12hab/km²

Night light

1,1nW

Built-up

502,2%

Pesticides

39,3kg/km²

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

Protected areas11

IUCN Not Reported · 11

Anambra

IUCN Not Reported

Forest Reserve

151 km²

Osomari

IUCN Not Reported

Forest Reserve

136 km²

Akpaka

IUCN Not Reported

Forest Reserve

4 km²

Complete list

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

Sub-administrations21