Ontologia

HydroBASINS lev08 watershed · #1080963940

Bassin de Onwul

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 8 administrative regions : Bekwarra, Boki, Kwande, Obanliku, Obudu +3

Pfafstetter: 13380442

Sub-basin area

2 744,3km²

Upstream area

2 744,4km²

Discharge

100,57m³/s

Mean elev.

155m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Anyim68 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

8 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Afi Mountain

    IUCN Not Reported

    Wildlife Sanctuary

    16.49 km² overlap

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

Species present

581 distinct species · 2 536 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 536 obs · 51 cellules
Obs. / cellule
≥ 472
82–471
56–81
33–55
< 33

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

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 Bassin de Onwul : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 3 types (connectance 6.0%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
30
Connectance
0.060
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°

26,7°C

Annual rain

1 914mm

Moisture idx (CMI)

0,11

Runoff

1 155mm/an

PET

1 707mm

AET

1 169mm

Mean slope

3,1°

Water table

127cm

Forest

41%

Crops

34%

Urban

4%

Protected

1%

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