Ontologia

HydroBASINS lev08 watershed · #1081152730

Bassin de Tana River

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 : Balambala, Bura

Pfafstetter: 11720933

Sub-basin area

3 526,1km²

Upstream area

32 255,8km²

Discharge

193,27m³/s

Mean elev.

254m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tana River1691 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Rahole

    IUCN VI

    National Reserve

    192.87 km² overlap

  • Kora

    IUCN II

    National Park

    33.99 km² overlap

  • Mbalambala

    IUCN Not Reported

    Forest Reserve

    31.79 km² overlap

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

Species present

271 distinct species · 574 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

574 obs · 29 cellules
Obs. / cellule
≥ 116
63–115
27–62
5–26
< 5

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

Ecological tissue

Sample of 23 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 Tana River : 23 espèces reliées par 14 interactions GloBI sur 2 types (connectance 5.5%, filtre Serrano α=0.2).

Espèces affichées
23
Interactions affichées
14
Connectance
0.055
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°

27,6°C

Annual rain

352mm

Moisture idx (CMI)

-0,83

Runoff

23mm/an

PET

2 063mm

AET

294mm

Mean slope

0,7°

Water table

219cm

Forest

1%

Crops

5%

Urban

0%

Protected

7%

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