Ontologia

HydroBASINS lev08 watershed · #1081153720

Bassin de Olambwe R.

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 5 administrative regions : Mbita, Ndhiwa, Nyatike, Rarieda, Suba

51% lakePfafstetter: 17297638

Sub-basin area

601,8km²

Upstream area

601,8km²

Discharge

4,69m³/s

Mean elev.

1 309m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin · #1081151610270 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Ruma

    IUCN II

    National Park

    120.61 km² overlap

  • Lambwe

    IUCN Not Reported

    Forest Reserve

    38.60 km² overlap

  • Gwasi

    IUCN Not Reported

    Forest Reserve

    23.31 km² overlap

  • Gembe Hills

    IUCN Not Reported

    Forest Reserve

    14.92 km² overlap

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

Species present

668 distinct species · 14 583 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

14 583 obs · 17 cellules
Obs. / cellule
≥ 6 654
2 406–6 653
475–2 405
262–474
< 262

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

Ecological tissue

Sample of 18 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 Olambwe R. : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 13 interactions GloBI sur 3 types (connectance 8.5%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
13
Connectance
0.085
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°

21,7°C

Annual rain

1 268mm

Moisture idx (CMI)

-0,29

Runoff

253mm/an

PET

1 796mm

AET

1 072mm

Mean slope

5,5°

Water table

271cm

Forest

53%

Crops

19%

Urban

4%

Protected

18%

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