Ontologia

HydroBASINS lev08 watershed · #4080049220

Bassin de Kala Oya

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 21 administrative regions : Dambulla, Ehetuwewa, Galewela, Galgamuwa, Galnewa +16

24% lakePfafstetter: 45800156

Sub-basin area

2 873,4km²

Upstream area

2 873,4km²

Discharge

36,58m³/s

Mean elev.

120m

Administrative coverage

21 dept-equivalent regions (GADM L2)

13 more

30 intersecting protected areas

21 more protected areas

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

Species present

3 037 distinct species · 91 904 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

91 904 obs · 74 cellules
Obs. / cellule
≥ 42 336
1 941–42 335
290–1 940
132–289
< 132

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

Ecological tissue

Sample of 30 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 Kala Oya : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
30
Connectance
0.069
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°

27,2°C

Annual rain

1 326mm

Moisture idx (CMI)

-0,16

Runoff

507mm/an

PET

1 579mm

AET

1 033mm

Mean slope

1,7°

Water table

103cm

Forest

27%

Crops

37%

Urban

13%

Protected

26%

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