Gal Oya Valley South - East
IUCN IVSanctuary · 1954
196 km²
Division · LKA
Medagama
Sri Lanka
AfTropical, rainforest(62 %)
Species observed
58
Observations
71
Area
241,1km²
Ecological tissue
Sample of 10 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 Medagama : 9 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 7 interactions GloBI sur 2 types (connectance 15.6%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
10
Interactions affichées
7
Connectance
0.156
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
58 distinct species · 71 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
25,8°C
Annual rain
1 608mm
Warmest m°
32,9°C
Coldest m°
19,5°C
Elevation: 287 m on average (min 119 m, max 638 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
25,8°C
Annual rain
1 608mm
Warmest month
32,9°C
Coldest month
19,5°C
Mean alt.
287m
Min
119m
Max
638m
Std. dev.
79m
Köppen-Geiger (dominant)
AfTropical, rainforest(62 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,4
Org. C
34,1g/kg
Clay
30,8%
Sand
38,7%
Silt
30,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,4
Org. C
48,4g/kg
Clay
29,4%
Sand
39,5%
Silt
31,1%
5–15 cm
pH H₂O
5,4
Org. C
32,8g/kg
Clay
30,3%
Sand
39,1%
Silt
30,6%
15–30 cm
pH H₂O
5,4
Org. C
21,0g/kg
Clay
32,6%
Sand
37,6%
Silt
29,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest80.1%
Crops4.4%
Built-up0.4%
Bare soil0.1%
Other (grassland, water…)14.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 0 lakes · 12 rivers
Hydrology metrics for this exact territory
Stream length here
66,1km
Basins crossed
2
Max stream order
4
Max drainage
3 992km²
Discharge in basins
4,4m³/s
Mean precip.
1 833mm/an
Mean T°
26,3°C
Moisture idx
0,17
Mean runoff
702mm/an
Mean elev. (basins)
167m
Watersheds crossing here
Rivers / streams (12, ord ≥ 4)
- Dahamala Oyaord 2len here25.26 km95%total27 km
- Gal Oyaord 4len here11.87 km22%total54 km
- Kumbukkan Oyaord 4len here10.99 km8%total146 km
- Monarawana Anicut RB Main Canalord 2len here3.99 km100%total4 km
- Dik Oyaord 2len here3.22 km56%total6 km
- Walahatenna Kanduraord 1len here2.45 km100%total2 km
- Meegala Kanduraord 1len here2.28 km100%total2 km
- Kumbukkan Oya Branchord 3len here1.50 km4%total36 km
- Badulu Oya Tank Main Canalord 3len here1.41 km40%total4 km
- Battadala Kanduraord 1len here1.35 km45%total3 km
- Mahawelle Kanduraord 1len here1.34 km99%total1 km
- Panmedilla Oyaord 4len here0.44 km3%total13 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,0nW
Built-up
43,6%
Pesticides
12,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN IV · 1IUCN Ib · 1
Bakigahawela
IUCN IbReserved Forest · 1926
2 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN