Ontologia

HydroBASINS lev08 watershed · #1081145450

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 7 administrative regions : Igembe Central, Igembe South, Mwingi North, Tharaka, Tigania East +1

Pfafstetter: 11720953

Sub-basin area

3 125,8km²

Upstream area

20 609,9km²

Discharge

202,24m³/s

Mean elev.

687m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tana River922 km²

▲ Receives from 2 basins

7 dept-equivalent regions (GADM L2)

8 intersecting protected areas

  • Meru

    IUCN II

    National Park

    453.53 km² overlap

  • Mwingi

    IUCN VI

    National Reserve

    69.58 km² overlap

  • Nyambeni

    IUCN Not Reported

    Forest Reserve

    38.42 km² overlap

  • Mutejwa

    IUCN Not Reported

    Forest Reserve

    13.12 km² overlap

  • Kikingo

    IUCN Not Reported

    Forest Reserve

    11.98 km² overlap

  • Gaikuyu

    IUCN Not Reported

    Forest Reserve

    8.85 km² overlap

  • Maatha

    IUCN Not Reported

    Forest Reserve

    5.25 km² overlap

  • Thuuri

    IUCN Not Reported

    Forest Reserve

    5.23 km² overlap

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

Species present

1 181 distinct species · 5 666 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 666 obs · 65 cellules
Obs. / cellule
≥ 1 307
175–1 306
55–174
13–54
< 13

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

Ecological tissue

Sample of 31 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 : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 3 types (connectance 6.5%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
30
Connectance
0.065
Patrimoniales
2
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°

23,6°C

Annual rain

689mm

Moisture idx (CMI)

-0,66

Runoff

154mm/an

PET

2 019mm

AET

557mm

Mean slope

3,2°

Water table

223cm

Forest

12%

Crops

5%

Urban

6%

Protected

20%

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