Ontologia

HydroBASINS lev08 watershed · #1080020220

Bassin de Ngamboussi

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 2 administrative regions : Loandjili, Pointe Noire

Coastal basinPfafstetter: 13310090

Sub-basin area

374,3km²

Upstream area

374,3km²

Discharge

6,35m³/s

Mean elev.

50m

Administrative coverage

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Baie de Loango

    IUCN VI

    Community Marine Reserve

    53.11 km² overlap

  • Bas-Kouilou-Yombo

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    21.62 km² overlap

  • Tchimpounga

    IUCN IV

    Wildlife Sanctuary

    14.33 km² overlap

  • Mvassa

    IUCN VI

    Community Marine Reserve

    1.43 km² overlap

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

Species present

488 distinct species · 1 683 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 683 obs · 11 cellules
Obs. / cellule
≥ 417
354–416
188–353
131–187
< 131

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 Ngamboussi : 16 espèces reliées par 16 interactions GloBI sur 1 type (connectance 8.4%, filtre Serrano α=0.2). 4 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°

24,8°C

Annual rain

1 248mm

Moisture idx (CMI)

-0,08

Runoff

558mm/an

PET

1 363mm

AET

978mm

Mean slope

2,1°

Water table

177cm

Forest

51%

Crops

1%

Urban

41%

Protected

4%

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