Ontologia

HydroBASINS lev08 watershed · #1080840070

Bassin de Gaji River

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 : Alkaleri, Kanam, Karim Lamido, Wase

Pfafstetter: 14227430

Sub-basin area

1 064,1km²

Upstream area

9 956,4km²

Discharge

56,66m³/s

Mean elev.

336m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Gaji River1991 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Pai River

    IUCN Not Reported

    Game Reserve

    158.19 km² overlap

  • Yankari

    IUCN II

    Forest Reserve

    118.86 km² overlap

  • Yankari

    IUCN IV

    Game Reserve

    103.31 km² overlap

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

Species present

200 distinct species · 1 152 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 152 obs · 6 cellules
Obs. / cellule
≥ 1 097
1 097–1 096
44–1 096
7–43
< 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 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 Gaji River : 10 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 10 interactions GloBI sur 2 types (connectance 12.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
13
Interactions affichées
10
Connectance
0.128
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°

26,6°C

Annual rain

1 013mm

Moisture idx (CMI)

-0,47

Runoff

188mm/an

PET

1 924mm

AET

832mm

Mean slope

1,6°

Water table

162cm

Forest

0%

Crops

46%

Urban

0%

Protected

28%

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