Ontologia

HydroBASINS lev08 watershed · #1080810070

Bassin de Wessa

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 2 administrative regions : Borgu, Kaiama

19% lakePfafstetter: 14239304

Sub-basin area

1 334,1km²

Upstream area

1 334,1km²

Discharge

9,01m³/s

Mean elev.

243m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger58 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Borgu

    IUCN Not Reported

    Forest Reserve

    1025.97 km² overlap

  • Kainji Lake

    IUCN II

    National Park

    948.03 km² overlap

  • Doro

    IUCN Not Reported

    Forest Reserve

    72.99 km² overlap

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

Species present

168 distinct species · 327 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

327 obs · 13 cellules
Obs. / cellule
≥ 117
72–116
25–71
7–24
< 7

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

Ecological tissue

Sample of 23 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 Wessa : 20 espèces reliées par 20 interactions GloBI sur 2 types (connectance 7.2%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
20
Connectance
0.072
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°

26,9°C

Annual rain

1 092mm

Moisture idx (CMI)

-0,43

Runoff

213mm/an

PET

1 910mm

AET

866mm

Mean slope

1,0°

Water table

92cm

Forest

77%

Crops

12%

Urban

0%

Protected

84%

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