Ontologia

HydroBASINS lev08 watershed · #1080713770

Bassin de Casamance

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 4 administrative regions across 2 countries : Bigene, Goudomp, Sédhiou, Ziguinchor

Pfafstetter: 14579853

Sub-basin area

374,1km²

Upstream area

7 816,5km²

Discharge

47,36m³/s

Mean elev.

21m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Casamance19 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

60 distinct species · 413 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

413 obs · 10 cellules
Obs. / cellule
≥ 138
138–137
59–137
39–58
< 39

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

Ecological tissue

Sample of 12 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 Casamance : 10 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 8 interactions GloBI sur 2 types (connectance 12.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
12
Interactions affichées
8
Connectance
0.121
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°

26,7°C

Annual rain

1 227mm

Moisture idx (CMI)

-0,36

Runoff

426mm/an

PET

1 907mm

AET

793mm

Mean slope

0,7°

Water table

67cm

Forest

67%

Crops

20%

Urban

2%

Protected

12%

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