Ontologia

HydroBASINS lev08 watershed · #1081144170

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 4 administrative regions : Bura, Igembe South, Isiolo South, Mwingi North

Pfafstetter: 11720951

Sub-basin area

922km²

Upstream area

22 457,9km²

Discharge

207,56m³/s

Mean elev.

495m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tana River1162 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Mwingi

    IUCN VI

    National Reserve

    264.80 km² overlap

  • Kora

    IUCN II

    National Park

    243.15 km² overlap

  • Bisandi

    IUCN VI

    National Reserve

    134.19 km² overlap

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

Species present

186 distinct species · 416 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

416 obs · 17 cellules
Obs. / cellule
≥ 182
63–181
22–62
6–21
< 6

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 Tana River : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 1 type (connectance 7.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
18
Interactions affichées
11
Connectance
0.072
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°

24,8°C

Annual rain

493mm

Moisture idx (CMI)

-0,76

Runoff

78mm/an

PET

2 032mm

AET

414mm

Mean slope

1,3°

Water table

153cm

Forest

0%

Crops

8%

Urban

0%

Protected

66%

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