Ontologia

HydroBASINS lev08 watershed · #4081152590

Bassin de Periyar

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 : Idukki, Pathanamthitta, Theni, Tirunelveli, Virudunagar

37% lakePfafstetter: 45402009

Sub-basin area

1 436,2km²

Upstream area

1 436,2km²

Discharge

39,83m³/s

Mean elev.

1 001m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Periyar2 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Western Ghats

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    598.61 km² overlap

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

Species present

1 260 distinct species · 251 864 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

251 864 obs · 40 cellules
Obs. / cellule
≥ 62 782
20 587–62 781
6 076–20 586
1 731–6 075
< 1 731

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

Ecological tissue

Sample of 17 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 Periyar : 17 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 9 interactions GloBI sur 3 types (connectance 6.6%, filtre Serrano α=0.2).

Espèces affichées
17
Interactions affichées
9
Connectance
0.066
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°

22,3°C

Annual rain

2 093mm

Moisture idx (CMI)

0,34

Runoff

859mm/an

PET

1 367mm

AET

1 133mm

Mean slope

11,8°

Water table

458cm

Forest

93%

Crops

37%

Urban

2%

Protected

47%

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