Cross River
IUCN IINational Park · 1991
3 297 km²
Department · CMR
Ndian
Cameroon
AmTropical, monsoon(99 %)
Species observed
3 073
Observations
27 869
Area
6 440,3km²
Ecological tissue
Sample of 18 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 Ndian : 14 espèces reliées par 17 interactions GloBI sur 3 types (connectance 11.1%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
18
Interactions affichées
17
Connectance
0.111
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
3 073 distinct species · 27 869 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
24,6°C
Annual rain
3 611mm
Warmest m°
30,0°C
Coldest m°
21,3°C
Elevation: 234 m on average (min -61 m, max 1 428 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
24,6°C
Annual rain
3 611mm
Warmest month
30,0°C
Coldest month
21,3°C
Mean alt.
234m
Min
-61m
Max
1 428m
Std. dev.
290m
Köppen-Geiger (dominant)
AmTropical, monsoon(99 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
4,8
Org. C
28,7g/kg
Clay
32,3%
Sand
52,3%
Silt
15,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
4,8
Org. C
41,8g/kg
Clay
31,1%
Sand
53,4%
Silt
15,5%
5–15 cm
pH H₂O
4,8
Org. C
26,1g/kg
Clay
32,1%
Sand
52,2%
Silt
15,6%
15–30 cm
pH H₂O
4,8
Org. C
18,1g/kg
Clay
33,6%
Sand
51,2%
Silt
15,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest84.2%
Crops0.5%
Built-up0.1%
Bare soil0.0%
Other (grassland, water…)15.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology18 basins · 0 lakes · 26 rivers
Hydrology metrics for this exact territory
Stream length here
650,2km
Basins crossed
18
Max stream order
5
Max drainage
2 744km²
Discharge in basins
393,1m³/s
Mean precip.
2 943mm/an
Mean T°
24,8°C
Moisture idx
0,48
Mean runoff
1 800mm/an
Mean elev. (basins)
285m
Watersheds crossing here
- Bassin de Ndiansub-area1 513,2 km²overlap1374.64 km²21%
- Bassin de Melangesub-area1 212,1 km²overlap1206.79 km²19%
- Bassin de Memesub-area1 773,1 km²overlap794.65 km²12%
- Bassin de Ndiansub-area759,6 km²overlap745.10 km²12%
- Bassin de Akpakorumsub-area2 444,3 km²overlap571.61 km²9%
- Bassin de Ongesub-area1 334,8 km²overlap317.79 km²5%
- Basin #03390sub-area261,3 km²overlap260.19 km²4%
- Basin #03400sub-area381,6 km²overlap254.83 km²4%
- Basin #21800sub-area163,4 km²overlap160.59 km²2%
9 more basinssorted by overlap
- Basin #21780sub-area156,4 km²overlap154.34 km²2%
- Basin #07660sub-area155,7 km²overlap152.91 km²2%
- Bassin de Munayasub-area194,5 km²overlap138.14 km²2%
- Basin #07540sub-area533,4 km²overlap93.04 km²1%
- Bassin de Munayasub-area966,7 km²overlap71.30 km²1%
- Bassin de Little Kwasub-area154,7 km²overlap13.36 km²0%
- Bassin de Mungosub-area1 093,8 km²overlap3.06 km²0%
- Bassin de Akaremsub-area318 km²overlap0.36 km²0%
- Basin #21530sub-area236,7 km²overlap0.10 km²0%
Rivers / streams (26, ord ≥ 4)
- Ndianord 4len here201.97 km96%total210 km
- Akpakorumord 5len here112.81 km58%total193 km
- Melangeord 4len here49.90 km100%total50 km
- Dokériord 3len here35.76 km100%total36 km
- Iduord 3len here35.36 km100%total35 km
- Mokoord 5len here32.73 km100%total33 km
- Iloaniord 3len here25.13 km100%total25 km
- Akpasangord 5len here21.09 km100%total21 km
- Memeord 4len here20.35 km17%total121 km
- Andokatord 5len here19.11 km100%total19 km
- Ndianord 3len here18.69 km100%total19 km
- Méméord 4len here16.46 km100%total17 km
14 more river segmentssorted by Strahler order + length
- Okotiord 3len here12.35 km100%total12 km
- Nraraord 5len here9.43 km100%total9 km
- Boko Creekord 3len here8.00 km100%total8 km
- Isangeleord 2len here6.40 km100%total6 km
- Boko Creekord 2len here6.30 km100%total6 km
- Koteroord 2len here5.78 km99%total6 km
- Ongeord 4len here5.76 km23%total25 km
- Oronord 2len here2.04 km100%total2 km
- Bateord 4len here1.83 km4%total43 km
- Akpakorumord 1len here1.15 km99%total1 km
- Akpakorumord 1len here0.97 km85%total1 km
- Ndianord 1len here0.69 km101%total1 km
- River Ebeord 4len here0.16 km0%total59 km
- Nkanyaord 3len here0.00 km0%total38 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
6,2%
Pesticides
4,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN II · 2IUCN Not Reported · 1🌊 Marine · 2
Estuaire du Rio Del Rey
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 2010
1 849 km²
Korup
IUCN IINational Park · 1986
1 263 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN