Ontologia

HydroBASINS lev08 watershed · #1080935420

Bassin de Oranyan

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 3 administrative regions : Aiyedade, Irewole, Isokan

Pfafstetter: 14304644

Sub-basin area

154,6km²

Upstream area

154,6km²

Discharge

3,51m³/s

Mean elev.

191m

Administrative coverage

Hydrographic chain

Drains into

Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Ago-Owu

    IUCN Not Reported

    Forest Reserve

    2.74 km² overlap

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

Species present

85 distinct species · 275 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

275 obs · 4 cellules
Obs. / cellule
≥ 163
163–162
90–162
90–89
< 90

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

Ecological tissue

Sample of 13 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 Oranyan : 12 espèces reliées par 12 interactions GloBI sur 1 type (connectance 15.4%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
13
Interactions affichées
12
Connectance
0.154
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°

26,5°C

Annual rain

1 429mm

Moisture idx (CMI)

-0,12

Runoff

716mm/an

PET

1 622mm

AET

1 103mm

Mean slope

1,9°

Water table

93cm

Forest

13%

Crops

24%

Urban

1%

Protected

2%

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