Ontologia

HydroBASINS lev08 watershed · #4080029590

Bassin de Neyyar

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 : Kanniyakumari, Thiruvananthapuram, Tirunelveli

Coastal basin 7% lakePfafstetter: 45401013

Sub-basin area

588,5km²

Upstream area

588,5km²

Discharge

0,49m³/s

Mean elev.

157m

Administrative coverage

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Western Ghats

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    106.49 km² overlap

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

Species present

1 358 distinct species · 140 089 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

140 089 obs · 17 cellules
Obs. / cellule
≥ 85 268
10 822–85 267
4 125–10 821
1 473–4 124
< 1 473

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

Ecological tissue

Sample of 39 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 Neyyar : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 51 interactions GloBI sur 3 types (connectance 6.5%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
51
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°

26,4°C

Annual rain

1 486mm

Moisture idx (CMI)

0,08

Runoff

590mm/an

PET

1 366mm

AET

1 087mm

Mean slope

6,1°

Water table

282cm

Forest

62%

Crops

54%

Urban

22%

Protected

23%

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