Ontologia

HydroBASINS lev08 watershed · #1080801760

Bassin de Rahama

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 : Bassa, Jos North, Lere

Pfafstetter: 14234829

Sub-basin area

592,2km²

Upstream area

592,2km²

Discharge

9,13m³/s

Mean elev.

928m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Rahama726 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

128 distinct species · 569 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

569 obs · 7 cellules
Obs. / cellule
≥ 174
174–173
104–173
50–103
< 50

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

Ecological tissue

Sample of 20 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 Rahama : 18 espèces reliées par 16 interactions GloBI sur 3 types (connectance 8.4%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
16
Connectance
0.084
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°

23,9°C

Annual rain

1 266mm

Moisture idx (CMI)

-0,28

Runoff

421mm/an

PET

1 766mm

AET

885mm

Mean slope

2,2°

Water table

173cm

Forest

0%

Crops

45%

Urban

5%

Protected

20%

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