Ontologia

HydroBASINS lev08 watershed · #1080027110

Bassin de Nougouna

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 7 administrative regions : Dakar, Guédiawaye, Mbour, Pikine, Rufisque +2

Coastal basin 4% lakePfafstetter: 14590700

Sub-basin area

826,5km²

Upstream area

826,5km²

Discharge

0m³/s

Mean elev.

23m

Administrative coverage

7 dept-equivalent regions (GADM L2)

7 intersecting protected areas

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

Species present

2 207 distinct species · 87 483 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

87 483 obs · 26 cellules
Obs. / cellule
≥ 22 932
9 747–22 931
2 499–9 746
1 085–2 498
< 1 085

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

Ecological tissue

Sample of 24 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 Nougouna : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 14.3%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
25
Interactions affichées
43
Connectance
0.143
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°

25,4°C

Annual rain

484mm

Moisture idx (CMI)

-0,69

Runoff

3mm/an

PET

1 584mm

AET

408mm

Mean slope

0,8°

Water table

152cm

Forest

0%

Crops

24%

Urban

49%

Protected

1%

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