Ontologia

HydroBASINS lev08 watershed · #1080841950

Bassin de Mada

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 : Barkin Ladi, Jema'a, Jos South, Riyom

Pfafstetter: 14221490

Sub-basin area

620,9km²

Upstream area

620,9km²

Discharge

12m³/s

Mean elev.

1 101m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mada182 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

5 intersecting protected areas

  • Gimi River

    IUCN Not Reported

    Forest Reserve

    26.87 km² overlap

  • Sanga River

    IUCN Not Reported

    Forest Reserve

    13.62 km² overlap

  • Assob Bachit

    IUCN Not Reported

    Forest Reserve

    13.41 km² overlap

  • Nimbia

    IUCN Not Reported

    Forest Reserve

    0.15 km² overlap

  • Kurra Jekko

    IUCN Not Reported

    Forest Reserve

    0.00 km² overlap

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

Species present

346 distinct species · 1 985 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 985 obs · 15 cellules
Obs. / cellule
≥ 391
387–390
208–386
89–207
< 89

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

Ecological tissue

Sample of 32 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 Mada : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 5.0%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
25
Connectance
0.050
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°

22,9°C

Annual rain

1 411mm

Moisture idx (CMI)

-0,16

Runoff

479mm/an

PET

1 676mm

AET

934mm

Mean slope

2,7°

Water table

157cm

Forest

2%

Crops

48%

Urban

14%

Protected

9%

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