Ontologia

HydroBASINS lev08 watershed · #4081150610

Bassin de Aliyar

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 3 administrative regions : Coimbatore, Palakkad, Tiruppur

16% lakePfafstetter: 45403209

Sub-basin area

419,6km²

Upstream area

419,6km²

Discharge

12,47m³/s

Mean elev.

828m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Kannadipuzha375 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Western Ghats

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    31.04 km² overlap

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

Species present

1 094 distinct species · 121 283 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

121 283 obs · 13 cellules
Obs. / cellule
≥ 51 549
27 665–51 548
9 676–27 664
1 541–9 675
< 1 541

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

Ecological tissue

Sample of 26 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 Aliyar : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 7.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
26
Interactions affichées
25
Connectance
0.077
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°

23,4°C

Annual rain

1 694mm

Moisture idx (CMI)

0,10

Runoff

1 000mm/an

PET

1 467mm

AET

1 088mm

Mean slope

11,8°

Water table

447cm

Forest

76%

Crops

66%

Urban

6%

Protected

97%

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