Ontologia

State · nga

Cross River

Nigeria

AmTropical, monsoon(70 %)

Species observed

3 679

Observations

29 927

Area

21 302,9km²

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 Cross River : 12 espèces reliées par 14 interactions GloBI sur 3 types (connectance 13.3%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
15
Interactions affichées
14
Connectance
0.133
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

3 679 distinct species · 29 927 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

29 927 obs · 419 cellules
Obs. / cellule
≥ 688
163–687
61–162
19–60
< 19

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 509mm

Warmest m°

34,0°C

Coldest m°

21,8°C

Elevation: 135 m on average (min -6 m, max 1 661 m)

Bioclimatic detailsExpert
Annual mean temp.
26,0°C
Annual rain
2 509mm
Warmest month
34,0°C
Coldest month
21,8°C
Mean alt.
135m
Min
-6m
Max
1 661m
Std. dev.
173m
Köppen-Geiger (dominant)
AmTropical, monsoon(70 %)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

22,1g/kg

Clay

23,6%

Sand

59,2%

Silt

17,1%

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

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
31,0g/kg
Clay
21,2%
Sand
61,3%
Silt
17,5%
5–15 cm
pH H₂O
5,2
Org. C
21,1g/kg
Clay
22,4%
Sand
60,2%
Silt
17,4%
15–30 cm
pH H₂O
5,2
Org. C
14,1g/kg
Clay
27,2%
Sand
56,3%
Silt
16,5%

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

Land cover

Forest59.4%
Crops6.5%
Built-up0.5%
Bare soil0.2%
Other (grassland, water…)33.4%

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

Hydrology54 basins · 11 lakes · 51 rivers

Hydrology metrics for this exact territory

Stream length here

3 020,5km

Lake surface here

5,42km²

Basins crossed

54

Max stream order

7

Max drainage

52 699km²

Discharge in basins

20 899,6m³/s

Mean precip.

2 288mm/an

Mean T°

26,5°C

Moisture idx

0,27

Mean runoff

1 543mm/an

Mean elev. (basins)

137m

Watersheds crossing here

45 more basins

Lakes (11, top by area)

2 more lakes

Rivers / streams (51, ord ≥ 4)

39 more river segments

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

Human pressure

Pop. density

2hab/km²

Night light

0,0nW

Built-up

48,2%

Pesticides

40,7kg/km²

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

Protected areas20

IUCN Not Reported · 18IUCN II · 1IUCN Not Applicable · 1🌊 Marine · 1📍 Point sites · 3

Oban Group

IUCN Not Applicable

UNESCO-MAB Biosphere Reserve · 2020

2 192 km²

Oban Group

IUCN Not Reported

Forest Reserve · 1912

2 192 km²

Afi River

IUCN Not Reported

Forest Reserve

310 km²

Complete list

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

Sub-administrations18