Ontologia

HydroBASINS lev08 watershed · #1080980490

Bassin de Ohi

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 13 administrative regions : Egor, Esan Central, Esan North-East, Esan West, Ethiope West +8

Pfafstetter: 14301084

Sub-basin area

3 816,5km²

Upstream area

3 816,5km²

Discharge

166,86m³/s

Mean elev.

141m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Benin River182 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

13 dept-equivalent regions (GADM L2)

5 more

10 intersecting protected areas

  • Ekiadolor

    IUCN Not Reported

    Forest Reserve

    214.67 km² overlap

  • Sapoba

    IUCN Not Reported

    Forest Reserve

    191.96 km² overlap

  • Ebor

    IUCN Not Reported

    Forest Reserve

    175.94 km² overlap

  • Ebue

    IUCN Not Reported

    Forest Reserve

    94.79 km² overlap

  • Ologbo

    IUCN Not Reported

    Forest Reserve

    83.15 km² overlap

  • Obaretin

    IUCN Not Reported

    Forest Reserve

    78.93 km² overlap

  • Ujrohi-Ojogba

    IUCN Not Reported

    Forest Reserve

    30.20 km² overlap

  • Ehor

    IUCN Not Reported

    Forest Reserve

    27.76 km² overlap

  • Ojogba-Ugun

    IUCN Not Reported

    Forest Reserve

    10.46 km² overlap

1 more protected areas

  • Ogwa

    IUCN Not Reported

    Forest Reserve

    4.59 km² overlap

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

Species present

839 distinct species · 4 393 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 393 obs · 88 cellules
Obs. / cellule
≥ 371
103–370
57–102
33–56
< 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 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 Ohi : 23 espèces reliées par 30 interactions GloBI sur 4 types (connectance 7.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
30
Connectance
0.079
Patrimoniales
0
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°

26,0°C

Annual rain

1 898mm

Moisture idx (CMI)

0,15

Runoff

1 352mm/an

PET

1 603mm

AET

1 168mm

Mean slope

1,8°

Water table

107cm

Forest

25%

Crops

55%

Urban

7%

Protected

24%

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