Ontologia

HydroBASINS lev08 watershed · #1080938340

Bassin · #1080938340

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 : Ankpa, Dekina, Igalamela-Odolu, Ofu, Omala

Pfafstetter: 14210029

Sub-basin area

1 811,1km²

Upstream area

1 811,1km²

Discharge

36,32m³/s

Mean elev.

310m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Anambra1766 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

5 intersecting protected areas

  • Adoru

    IUCN Not Reported

    Forest Reserve

    105.27 km² overlap

  • West Okura

    IUCN Not Reported

    Forest Reserve

    75.65 km² overlap

  • Okura Iyale

    IUCN Not Reported

    Forest Reserve

    66.79 km² overlap

  • Acharane

    IUCN Not Reported

    Forest Reserve

    52.38 km² overlap

  • Okura River

    IUCN Not Reported

    Forest Reserve

    30.69 km² overlap

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

Species present

201 distinct species · 1 457 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 457 obs · 32 cellules
Obs. / cellule
≥ 368
91–367
46–90
36–45
< 36

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 · #1080938340 : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
27
Connectance
0.054
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°

25,6°C

Annual rain

1 355mm

Moisture idx (CMI)

-0,19

Runoff

618mm/an

PET

1 677mm

AET

1 036mm

Mean slope

2,2°

Water table

190cm

Forest

78%

Crops

74%

Urban

2%

Protected

18%

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