Ontologia

HydroBASINS lev08 watershed · #1080846880

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 1 administrative regions : Jema'a

Pfafstetter: 14221470

Sub-basin area

182km²

Upstream area

1 267,7km²

Discharge

20,13m³/s

Mean elev.

544m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mada197 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Sanga River

    IUCN Not Reported

    Forest Reserve

    90.52 km² overlap

  • Ninjam

    IUCN Not Reported

    Forest Reserve

    18.42 km² overlap

  • Gimi River

    IUCN Not Reported

    Forest Reserve

    0.18 km² overlap

  • Gerti Kloof

    IUCN Not Reported

    Forest Reserve

    0.01 km² overlap

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

Species present

165 distinct species · 236 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

236 obs · 5 cellules
Obs. / cellule
≥ 85
85–84
84–84
40–83
< 40

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

Ecological tissue

Sample of 14 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 : 13 espèces reliées par 11 interactions GloBI sur 2 types (connectance 12.1%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
14
Interactions affichées
11
Connectance
0.121
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°

25,5°C

Annual rain

1 517mm

Moisture idx (CMI)

-0,15

Runoff

371mm/an

PET

1 792mm

AET

982mm

Mean slope

2,3°

Water table

154cm

Forest

32%

Crops

25%

Urban

7%

Protected

60%

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