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lakes(23)
surface water(17)
water quality(16)
water pollution(9)
water resources(6)
phytoplankton(5)
cyanobacteria(4)
rivers(4)
seasons(4)
fresh water(3)
lake(3)
sediment(3)
water columns(3)
water management(3)
algae(2)
analysis of variance(2)
carbon dioxide(2)
climate change(2)
daphnia(2)
ecosystems(2)
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