Ontologia

HydroBASINS lev08 watershed · #1080849580

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 : Jaba, Jema'a, Kaura, Zangon Kataf

Pfafstetter: 14221440

Sub-basin area

1 091,8km²

Upstream area

1 091,9km²

Discharge

12,23m³/s

Mean elev.

726m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mada1611 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

8 intersecting protected areas

  • Amere

    IUCN Not Reported

    Forest Reserve

    26.37 km² overlap

  • Gerti Kloof

    IUCN Not Reported

    Forest Reserve

    23.21 km² overlap

  • Kogum River

    IUCN Not Reported

    Forest Reserve

    15.25 km² overlap

  • Dawaki

    IUCN Not Reported

    Forest Reserve

    7.15 km² overlap

  • Forest Reserve Name Unknown (NGA) No.57

    IUCN Not Reported

    Forest Reserve

    1.74 km² overlap

  • Ninjam

    IUCN Not Reported

    Forest Reserve

    1.02 km² overlap

  • Sanga River

    IUCN Not Reported

    Forest Reserve

    0.40 km² overlap

  • Nungu

    IUCN Not Reported

    Forest Reserve

    0.26 km² overlap

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

Species present

255 distinct species · 1 680 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 680 obs · 26 cellules
Obs. / cellule
≥ 257
174–256
91–173
58–90
< 58

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 Mada : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 18 interactions GloBI sur 3 types (connectance 6.5%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
18
Connectance
0.065
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°

24,5°C

Annual rain

1 513mm

Moisture idx (CMI)

-0,14

Runoff

362mm/an

PET

1 751mm

AET

976mm

Mean slope

2,9°

Water table

186cm

Forest

9%

Crops

34%

Urban

8%

Protected

7%

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