Ontologia

HydroBASINS lev08 watershed · #1080021860

Bassin de Great Kwa

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 4 administrative regions : Akamkpa, Akpabuyo, Calabar, Odukpani

Pfafstetter: 13370902

Sub-basin area

1 705,9km²

Upstream area

1 706,2km²

Discharge

104,54m³/s

Mean elev.

101m

Administrative coverage

4 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Oban Group

    IUCN Not Reported

    Forest Reserve

    818.49 km² overlap

  • Oban Group

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    818.49 km² overlap

  • Cross River

    IUCN II

    National Park

    355.01 km² overlap

  • Ekinta River

    IUCN Not Reported

    Forest Reserve

    43.88 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 352 distinct species · 6 873 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 873 obs · 40 cellules
Obs. / cellule
≥ 1 265
645–1 264
170–644
40–169
< 40

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

Ecological tissue

Sample of 28 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 Bassin de Great Kwa : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 29 interactions GloBI sur 3 types (connectance 7.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
29
Connectance
0.077
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

26,1°C

Annual rain

2 690mm

Moisture idx (CMI)

0,42

Runoff

1 849mm/an

PET

1 567mm

AET

1 318mm

Mean slope

2,7°

Water table

88cm

Forest

73%

Crops

14%

Urban

8%

Protected

58%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)