Ontologia

HydroBASINS lev08 watershed · #1080980650

Bassin de Benin River

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 5 administrative regions : Ethiope West, Ikpoba-Okha, Orhionmwon, Sapele, Warri North

Pfafstetter: 14301085

Sub-basin area

340,4km²

Upstream area

4 159,9km²

Discharge

212,15m³/s

Mean elev.

20m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Benin River182 km²

▲ Receives from 2 basins

5 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Ukpe-Sobo

    IUCN Not Reported

    Forest Reserve

    49.86 km² overlap

  • Sapoba

    IUCN Not Reported

    Forest Reserve

    30.77 km² overlap

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

Species present

119 distinct species · 179 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

179 obs · 6 cellules
Obs. / cellule
≥ 70
70–69
33–69
30–32
< 30

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

Ecological tissue

Sample of 20 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 Benin River : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 3 types (connectance 9.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
21
Interactions affichées
20
Connectance
0.095
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°

26,6°C

Annual rain

2 360mm

Moisture idx (CMI)

0,33

Runoff

1 625mm/an

PET

1 574mm

AET

1 221mm

Mean slope

0,5°

Water table

14cm

Forest

61%

Crops

38%

Urban

25%

Protected

24%

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