Ontologia

HydroBASINS lev08 watershed · #1080948850

Bassin de River Aika

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 : Esan Central, Esan North-East, Esan South-East, Etsako Central, Etsako West

Pfafstetter: 14210063

Sub-basin area

263,7km²

Upstream area

3 431km²

Discharge

97,24m³/s

Mean elev.

130m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de River Aika169 km²

▲ Receives from 2 basins

5 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Orle River

    IUCN Not Reported

    Forest Reserve

    90.45 km² overlap

  • Orle River

    IUCN IV

    Game Reserve

    90.45 km² overlap

  • Irrua Uromi

    IUCN Not Reported

    Forest Reserve

    5.62 km² overlap

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

Species present

245 distinct species · 4 360 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 360 obs · 7 cellules
Obs. / cellule
≥ 3 502
3 502–3 501
52–3 501
42–51
< 42

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

Ecological tissue

Sample of 9 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 River Aika : 8 espèces reliées par 6 interactions GloBI sur 2 types (connectance 16.7%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
9
Interactions affichées
6
Connectance
0.167
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°

26,6°C

Annual rain

1 510mm

Moisture idx (CMI)

-0,09

Runoff

1 002mm/an

PET

1 662mm

AET

1 099mm

Mean slope

1,2°

Water table

79cm

Forest

84%

Crops

81%

Urban

14%

Protected

37%

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