Table 2. Distribution of land snails at sites 1-15 in Nee Soon freshwater swamp forest across 6 cycles (* represents introduced species). 
Abbreviations: +++: Abundant (>15.00), ++: Common (5.00-14.00), +: Rare (1.00-4.00), -: Not found at site 
US: Upper Swamp, MS: Middle Swamp, LS: Lower Swamp, O: Outskirt 
118 
Ganl. Bull. Singapore 70 (Suppl. 1) 2018 
Amphidromus atricallosus + + ++ + + + + +++ 
temcisek 
